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Journal articles on the topic 'Ethylen vinyl acetát'

Author: Grafiati

Published: 28 June 2021

Last updated: 3 February 2022

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1

Jung, Bo Kyoung, Geon Wook Park, Jae-Keun Yu, Hyo Jun Kim, Dong Gun Kim, Minguen Kim, and Kyu Hyun. "Study of Compression Set of Ethylene Vinyl Acetate (EVA) Foams." Polymer Korea 44, no. 3 (May 31, 2020): 264–69. http://dx.doi.org/10.7317/pk.2020.44.3.264.

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2

Myshak, Volodymyr, Vita Seminog, Volodymyr Grishchenko, and Antonina Barantsova. "Modified composites based on poly(ethylene-vinyl acetate) and crumb rubber." Chemistry & Chemical Technology 11, no. 4 (December 20, 2017): 454–58. http://dx.doi.org/10.23939/chcht11.04.454.

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3

Fayzullayev, N., F. Buronov, N. Musulmonov, O. Qodirov, and F. Toshboyev. "Effect of the Number of Active Components of the Catalyst on the Yield of the Product During the Synthesis of Vinyl Acetate From Ethylene and Acetic Acid." Bulletin of Science and Practice 7, no. 4 (April 15, 2021): 301–11. http://dx.doi.org/10.33619/2414-2948/65/34.

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The development of active and selective catalysts for the synthesis of vinyl acetate from ethylene and acetic acid, the effect of the amount and ratio of individual components of the catalyst to control the catalytic properties of the introduced components were studied. In vinyl acetate synthesis, the effects of each component were studied to describe the effect of catalyst constituents on its properties, and empirical one-factor mathematical dependencies were obtained. Their generalized mathematical relationships of the activities of the catalysts, defined as the rates of the reactions of the formation of vinyl acetate and CO2, have been proposed. As a result of the research, a mathematical model was proposed to select the most optimal composition of the catalyst. The activity of the catalyst containing 0.4%Pd+4%Cu+7%CH3COOK/HSZ averaged 700 g VA/(l×cat×h) at 93–97% selectivity of ethylene-vinyl acetate formation.

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4

Bui, Nhi Dinh, Ngo Dinh Vu, Thao Thi Minh, Huong Thi Thanh Dam, Regina Romanovna Spiridonova, and Semenovich Alexandr Sirotkin. "Effect of Acetate Group Content in Ethylene-Vinyl Acetate Copolymer on Properties of Composite Based on Low Density Polyethylene and Polyamide-6." International Journal of Polymer Science 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/3149815.

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The effect of the content of vinyl acetate groups in ethylene-vinyl acetate copolymer on the properties of polymer composite based on low density polyethylene and polyamide-6 was studied. Ethylene-vinyl acetate copolymer containing less vinyl acetate groups (10–14 wt.%) has a positive compatibility effect on polymer composite than ethylene-vinyl acetate copolymer containing 21–30 wt.% vinyl acetate groups. The polymer composites of LDPE, PA-6, and EVA containing 10–14 wt.% vinyl acetate groups possess the ability of biodegradation. The physical-mechanical properties of sample and molecular mass reduce after 28 days of incubation.

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5

Kim, Seon Yong. "Experimental study on the effects of EVA(Ethylene Vinyl Acetate) for solar cell's long-term life." Journal of the Korea Safety Management and Science 17, no. 4 (December 31, 2015): 397–401. http://dx.doi.org/10.12812/ksms.2015.17.4.397.

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6

Weng, Tsai-Lung. "Evaluation of cementitious repair mortars modified with polymers." Advances in Mechanical Engineering 9, no. 1 (January 2017): 168781401668858. http://dx.doi.org/10.1177/1687814016688584.

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The aim of this study was to evaluate the effects of added polymers on the properties of repair mortars. Two types of polymers, ethylene vinyl acetate and polyvinyl acetate–vinyl carboxylate, were used as a replacement for 3%, 5%, and 8% of the cement (by weight). All tests were conducted using two water–cement ratios of 0.5 and 0.6. The effectiveness of the repair materials was evaluated according to setting time, drying shrinkage, thermal expansion, compressive strength, and bond strength. Specimens containing polyvinyl acetate–vinyl carboxylate at a water–cement ratio of 0.5 presented the highest compressive and bond strength. Specimens containing ethylene vinyl acetate presented strength characteristics exceeding those of the control at 28 days. The drying shrinkage of polyvinyl acetate–vinyl carboxylate specimens was similar to that of the control. At a water–cement ratio of 0.5, the thermal expansion of polyvinyl acetate–vinyl carboxylate specimens was lower than that of ethylene vinyl acetate specimens; however, at a water–cement ratio of 0.6, the thermal expansion was independent of the type of polymer.

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7

Ramesh S, Ramesh S., and Punithamoorthy K. Punithamoorthy K. "Synthesis And Characterization Of Ethylene Vinyl Acetate (Eva) / Poly Urethane Acrylate (Pua) Nano Clay Composites." International Journal of Scientific Research 1, no. 4 (June 1, 2012): 8–9. http://dx.doi.org/10.15373/22778179/sep2012/3.

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8

Xie, Jinchun, Hongfu Yuan, Chunfeng Song, Xiangjun Yan, Hao Yan, and Xiaoyu Li. "Online determination of chemical and physical properties of poly(ethylene vinyl acetate) pellets using a novel method of near-infrared spectroscopy combined with angle transformation." Analytical Methods 11, no. 18 (2019): 2435–42. http://dx.doi.org/10.1039/c9ay00475k.

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9

SADA, Tomoaki. "Ethylene-Vinyl Acetate Emulsion." Journal of The Adhesion Society of Japan 41, no. 11 (2005): 452–58. http://dx.doi.org/10.11618/adhesion.41.452.

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10

Go, Sun-Ho, Min-Sang Lee, Chang-Gi Hong, Lee-Ku Kwac, and Hong-Gun Kim. "Correlation between Drop Impact Energy and Residual Compressive Strength According to the Lamination of CFRP with EVA Sheets." Polymers 12, no. 1 (January 16, 2020): 224. http://dx.doi.org/10.3390/polym12010224.

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Carbon-fiber-reinforced plastic is an important building material; however, its application is limited because of its brittleness, leading to vulnerability under shock. Thus, the strength performance of carbon-fiber-reinforced plastics needs to be improved. Here, the drop impact test was conducted to analyze the impact energy and fracture characteristics of carbon-fiber-reinforced plastics and ethylene vinyl acetate sheets. The compression after impact test was performed to assess the residual compressive strength. The thermal energy generated was measured as change in temperature at the time of fracture to investigate the relationship between thermal and mechanical properties. The impact absorption efficiency of 100% was achieved when the carbon-fiber-reinforced plastics specimen was laminated with four or more sheets of ethylene vinyl acetate. The thermal energy generated during impact, the impact load, and the compression after impact test strength was reduced with the increasing number of laminated ethylene vinyl acetate layers. Our results showed that, by carefully selecting the optimal conditions of fabricating the carbon-fiber-reinforced plastic/ethylene vinyl acetate composites, carbon composite materials can be used for impact mitigation.

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11

Jang, Bunam, Sung Nam Kang, and Chang Hun Kum. "Effect of Ethylene Vinyl Alcohol and Cellulose Acetate Butyrate on Drug Release and Mechanical Property of Drug-eluting Stent." Journal of Chitin and Chitosan 22, no. 1 (March 31, 2017): 16–22. http://dx.doi.org/10.17642/jcc.22.1.3.

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12

Durmus, Ali, Mine B. Alanalp, and Ismail Aydin. "Investigation of morphological, rheological, and mechanical properties of cyclic olefin copolymer/poly(ethylene-co-vinyl acetate) blend films." Journal of Plastic Film & Sheeting 34, no. 2 (May 17, 2017): 140–59. http://dx.doi.org/10.1177/8756087917709333.

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In this study, cyclic olefin copolymer/poly(ethylene- co-vinyl acetate) 90/10, 80/20, and 70/30 blends were prepared by melt processing in a twin screw extruder equipped with a cast film haul-off unit to make films. Microstructural, rheological, mechanical, and viscoelastic properties of film samples were investigated by various tests performed in scanning electron microscope, rotational rheometer, dynamic mechanical analyzer, and tensile test machine. We observed that the films exhibited characteristic immiscible “matrix–droplet” or “cocontinuous” blend morphology, depending on the sample composition. Based on the melt rheology and dynamic mechanical analyzer tests, we found that poly(ethylene- co-vinyl acetate) addition changed the viscoelastic properties of cyclic olefin copolymer such as increasing short-term creep strain and relaxation time but reducing relaxation rate in solid state. One can conclude that such effects became more pronounced by adding a compatibilizer (PE-g-MA) at 50% of poly(ethylene- co-vinyl acetate) present in the composition. We also found that poly(ethylene- co-vinyl acetate) addition into cyclic olefin copolymer reduced the Young’s modulus and yield stress and increased the strain at break for the blends.

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13

Abdulina, D. R., A. I. Chuenko, A. S. Topchiy, G. E. Kopteva, and Zh P. Kopteva. "Ability of Sulfate Reducing Bacteria to Utilize Polymer and Rubber Materials." Mikrobiolohichnyi Zhurnal 83, no. 2 (April 17, 2021): 51–63. http://dx.doi.org/10.15407/microbiolj83.02.051.

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Polymer materials are an integral part of our lives, but their use is a global environmental problem. Despite this, the development of modern approaches to the utilization of used polymer and rubber materials is currently relevant, including the using of anaerobic microbial destruction of polymers by sulfatereducing bacteria. The aim of the work. To study the ability of sulfate-reducing bacteria to utilize rubber and polymer materials such as solid rubber, ethylene vinyl acetate and foamed polyethylene. Methods. Microbiological (cultivation of sulfate-reducing bacteria, method of serial dilutions), biochemical (Lowry method, measurement of enzymatic activity), physical and chemical (gravimetry, iodometry, potentiometry, gas chromatography-mass spectrometry). Results. It was shown that in the presence of the studied materials as the sole sources of carbon, the amount of sulfate-reducing bacteria increased by 2–3 orders compared to the control without adding the materials. On the 90th day of the experiment the destruction coefficients of the studied materials were low and reached KD=0.21–2.88%. In the cultivation medium with the introduced studied materials, the metabolic and enzymatic activity of sulfate-reducing bacteria are changed, in particular, the production of hydrogen sulfide in the presence of ethylene vinyl acetate and foamed polyethylene increased by 0.8–3 times, and rubber – decreased by 1.2–3.5 times. The catalase activity of the studied bacterial cultures was decreased by 1.4–3.4 times compared to the control without adding of materials. During the exposure period with adding the materials, the lipase activity of bacterial cultures decreased and in some cases almost disappeared. The introduction of materials led to increasing of the short-chain fatty acids synthesis by Desulfovibrio desulfuricans DSM642 and D. vulgaris DSM644 strains, while, on the contrary, Desulfovibrio sp. 10 strain showed the decreasing in acid production. The introduction of rubber only in D. vulgaris DSM644 culture leads to the increasing of acetic and propanoic acids synthesis by 59% and 49.5%, respectively, compared to the control without the introduction of the studied materials. The synthesis of acetic acid in the presence of foamed polyethylene and ethylene vinyl acetate in the cultural liquid of sulfate-reducing bacteria increased by 46.2–419.5% and 69.8–92.6%, and propane – by 23.1–46.2% and 71.9–159.0%, respectively. Conclusions. The presence in cultivation media of rubber, foamed polyethylene and ethylene vinyl acetate as a sole carbon sources led to the changes in enzymatic activity (catalase and lipase), the intensification of hydrogen sulfide synthesis by bacteria was observed as well as acetic, propanoic and butanoic acids synthesis increased. This indicates the potential of sulfate-reducing bacteria to utilize the studied materials via acid formation.

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14

Huang, Yanping, Xiuqin Dong, Qiufeng Hao, Yingzhe Yu, and Minhua Zhang. "Comparison of the coupling of ethylene with acetate species and ethylene dehydrogenation on Pd–Au(100): a density functional study." Catalysis Science & Technology 6, no. 2 (2016): 555–68. http://dx.doi.org/10.1039/c5cy00476d.

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In this work, two key reactions in vinyl acetate monomer (VAM) synthesis, i.e., the coupling of ethylene with acetate species and ethylene dehydrogenation, on three different Pd–Au(100) surface configurations were studied.

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15

Syayleva, M. V., A. M. Bukanov, K. A. Zvezdenkov, and V. N. Voloshin. "THE STUDY OF THE PROPERTIES OF VULCANIZATES BASED ON ETHYLENE VINYL ACETATE RUBBERS WITH DIFFERENT CONTENT OF VINYL ACETATE UNITS." Fine Chemical Technologies 13, no. 3 (June 28, 2018): 79–85. http://dx.doi.org/10.32362/24106593-2018-13-3-79-56.

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The article studies the structure and properties of ethylene vinyl acetate rubbers and the influence of the vinyl acetate (VA) units content in the rubber on the technological, physical-mechanical, operating and electrical properties of vulcanizates. The results of the study prove that the distinctive feature of ethylene vinyl acetate rubbers compared to other rubbers is their thermoplastic properties and low viscosity. Besides, the high resistance to ozone, heat and oil resistance and good mechanical properties of vulcanizates based on them make this type of polymer materials very promising for the creation of modern products. It is shown that the values of elasticity modulus, strength, elongation and tear resistance are increased with increasing VA units content in the rubber. Besides, swelling in hydrocarbon media decreases. Vulcanizates containing 40-45% of VA have satisfactory electrical characteristics and good moisture resistance and can be used as the base insulating rubber. Vulcanizates with a high content of vinyl acetate units (60-70%) have high oil and heat resistance. Therefore, their use in rubber compounds for cable jackets is most effective. The study of the properties of ethylene vinyl acetate rubbers and their vulcanizates allowed to develop formulations of insulating and jacket rubbers and to determine the most promising areas of their application for modern cable products of special purpose in the petrochemical, aerospace, transport and shipbuilding industries.

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16

Iqbal, Deni, Sofyan M. Saleh, and Yuhanis Yunus. "PENGARUH LAMA RENDAMAN KOTORAN SAPI TERHADAP DURABILITAS CAMPURAN ASPAL BETON MENGGUNAKAN ASPAL PEN.60/70 YANG DI SUBSTITUSI LIMBAH ETHYLENE VINYL ACETATE (EVA)." Jurnal Teknik Sipil 1, no. 3 (January 15, 2017): 571–80. http://dx.doi.org/10.24815/jts.v1i3.9996.

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Abstract: The main reasons for the damage and decrease of strength in the flexibel pavement of the highway is the low in strength and durability in Asphalt Concrete wearing Course (AC-WC). In Aceh, many cow dung are littered on the highway. Cow dung is alleged impact on damage to highways that can weaken the ability of the asphalt viscosity and cause small holes in the asphalt. This study, the substitution polymer used is a waste material Ethylene Vinyl Acetate (EVA) on the AC-WC which were soaked with cow dung. This study aims to determine the effect of immersion duration of cow dung on the durability of concrete asphalt mixture using asphalt pen. 60/70 with substitution grated Ethylene Vinyl Acetate (EVA) polymer waste 1.5%, 2.5%, 3.5% in the asphalt with asphalt pen 60/70 weight ratio, as well as determine the effect of plain water immersion and cow dung with a variation of 30 minutes, 24 hours, and 48 hours on the stability of asphalt modification with EVA. The results, the best stability values without substitution with palin water immersion is 1181.93 kg, the best stability for EVA on a percentage of 1.5%, is 1920.68 kg. The parameter values for substitution without and with EVA produced in the form of stability, flow, MQ, density, VIM, VMA, and VFA still meet the specification requirements of Bina Marga 2014. The value of durability without substitution with plain water immersion is 90.8% by soaking into cow dung, the value of the durability of the EVA percentage variation is 97.20%, and has met the prescribed Bina Marga specifications 2014 which ≥ 90%.Abstrak: Salah satu alasan utama kerusakan dan penurunan kekuatan pada perkerasan lentur jalan raya adalah rendahnya kekuatan dan keawetan pada lapisan aus (AC-WC). Pada beberapa daerah di Aceh banyak dijumpai kotoran sapi yang berserakan di jalan raya. Kotoran sapi tersebut diduga berdampak pada kerusakan jalan raya dan dapat melemahkan kemampuan lekatan aspal. Pada penelitian ini polimer tambahan yang digunakan adalah material limbah Ethylene Vinyl Acetate (EVA) pada campuran laston lapis aus (AC-WC) yang direndam dalam kotoran sapi. Ethylene Vinyl Acetate (EVA) dalam campuran aspal tersebut dapat meningkatkan kekuatan dan keawetan pada lapisan aus (AC-WC). Penelitian ini bertujuan untuk mengetahui pengaruh lama rendaman kotoran sapi terhadap durabilitas campuran aspal beton menggunakan aspal pen. 60/70 dengan tambahan parutan limbah polimer Ethylene Vinyl Acetate (EVA) 1,5%, 2,5%, 3,5%. Dari hasil penelitian didapatkan nilai stabilitas terbaik tanpa substitusi rendaman kotoran sapi yaitu 1181,93 kg, stabilitas terbaik untuk Ethylene Vinyl Acetate (EVA) pada persentase 1,5% yaitu 1920.68 kg. Nilai parameter untuk tanpa dan dengan substitusi Ethylene Vinyl Acetate (EVA) yang dihasilkan berupa stabilitas, flow, MQ, density, VIM, VMA, dan VFA masih memenuhi persyaratan spesifikasi Bina Marga tahun 2014. Nilai durabilitas tanpa substitusi yaitu sebesar 90,8% dengan rendaman kotoran sapi, nilai durabilitas dengan variasi persentase Ethylene Vinyl Acetate (EVA) sebesar 97,06%, dan telah memenuhi spesifikasi yang ditentukan Bina Marga tahun 2014 yaitu ≥ 90%.

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17

Makhetha, TA, K. Mpitso, and AS Luyt. "Preparation and characterization of EVA/PLA/sugarcane bagasse composites for water purification." Journal of Composite Materials 51, no. 9 (October 18, 2016): 1169–86. http://dx.doi.org/10.1177/0021998316675399.

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Poly(lactic acid)/ethylene vinyl acetate blends and poly(lactic acid)/ethylene vinyl acetate/sugarcane bagasse composites were prepared by melt mixing. The lower viscosity of poly(lactic acid), the lower interfacial tension between poly(lactic acid) and sugarcane bagasse, and the wetting coefficient of poly(lactic acid)/sugarcane bagasse being larger than one, all suggested that sugarcane bagasse would preferably be in contact with poly(lactic acid). A fairly good dispersion of sugarcane bagasse was observed in the composites. Exposed fibre ends were observed in the composite micrographs, which were believed to add to the efficiency of metal adsorption. The impact properties depended more on the poly(lactic acid):ethylene vinyl acetate ratio than on the presence of sugarcane bagasse. The poly(lactic acid)/ethylene vinyl acetate blends showed two melting peaks at approximately the same temperatures as those of the neat polymers, which confirms the complete immiscibility of poly(lactic acid) and ethylene vinyl acetate at all the investigated compositions. Sugarcane bagasse-related weight loss occurred at higher temperatures for sugarcane bagasse in the composites, which could have been the result of the sugarcane bagasse being protected by the polymers, or a delay in the diffusion of the sugarcane bagasse decomposition products out of the sample. Water absorption increased with an increase in sugarcane bagasse loading in the composites. More lead was adsorbed than one would expect if the partial coverage of the fibre by the polymer is taken into account, and therefore it may be assumed that some of the lead was trapped inside the cavities in the composites and that the polymers may also have played a role in the metal complexation process, since both polymers have functional groups that could interact with the lead ions. The metal impurities underwent monolayer adsorption.

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18

Khalaf, Aman I., Azza A. Ward, and Nehad N. Rozik. "Investigation of physical properties and morphology of compatibilized EPDM/EVA blends." Journal of Thermoplastic Composite Materials 31, no. 3 (April 21, 2017): 376–91. http://dx.doi.org/10.1177/0892705717704486.

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The main aim is to investigate the effect of adding of 5% hydrolyzed poly (ethylene-co-vinyl acetate) (EVAOH), itaconic anhydride (naturally obtained during fermentation of sugars (It.anhydride)), and mercapto-modified ethylene-co-vinyl acetate (EVASH) as compatibilizers on the mechanical properties before and after thermal oxidative aging at 90°C for different time periods up to 7 days, electrical properties, and morphology of ethylene propylene diene monomer/ethylene vinyl acetate (EPDM/EVA) blends of different compositions (75/25, 60/40, 50/50, and 25/75, respectively). Stress at yield, tensile strength, and elongation at break of EPDM/EVA were improved markedly by the addition of 5% compatibilizers (EVAOH, It.anhydride, and EVASH). The micrographs of fractured surfaces obtained from the scanning electron microscope demonstrated further the enhancement of compatibility between EPDM and EVA by the addition of reactive compatibilizers. Further, the blends permittivity ε′ and dielectric loss ε″ have been measured at specific temperatures. The dielectric properties revealed that It.anhydride and EVASH/EPDM/EVA compositions are promising materials for insulation purposes. Finally, aging resistance was improved by the use of compatibilizers.

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19

Handayasari, Indah, Irma Sepriyanna Sepriyanna, and Dyah Pratiwi Kusumastuti. "Pengaruh Penggunaan Bahan Limbah Polimer Sebagai Campuran Aspal Modifikasi Terhadap Kinerja Marshall." FORUM MEKANIKA 9, no. 1 (May 31, 2020): 27–33. http://dx.doi.org/10.33322/forummekanika.v9i1.1098.

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One of the polymer materials that can be a mixture of asphalt is Ethylene Vinyl Acetate, which is a material that is widely used in making toys and making footwear. This large amount of toys and footwear production waste has only become rubbish and has not been utilized optimally. Ethylene Vinyl Acetate polymers themselves belong to elastomeric polymers which have flexible properties such as rubber, smooth, flexible, resistant to low temperatures, are not easily cracked and are resistant to water. The use of polymer material as a mixture of asphalt has been widely carried out considering that asphalt modification with polymeric materials is known from several tests showing that it has better resistance to deformation and overcoming cracks, so that road construction can be produced more durable and can reduce maintenance and repair costs Street. In this study the use of Ethylene Vinyl Acetate waste on asphalt mixes has a pretty good effect, this is seen from the results of marshall tests that can meet the requirements.

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Thabet, F. S., A. M. AbdElbary, and G. M. Nasr. "Thermally stimulated depolarization current characteristic of EVA–conductive PPy composites." Journal of Composite Materials 54, no. 2 (July 3, 2019): 205–14. http://dx.doi.org/10.1177/0021998319860891.

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Thermally stimulated depolarization current in pure poly(ethylene-co-vinyl acetate) and poly(ethylene-co-vinyl acetate) composites with different amounts of polypyrrole/carbon nanoparticles (of various weight ratios, 100:0, 95:5, 90:10, 85:15, 80:20, and 70:30) have been investigated at poling temperature 363 K using different polarizing voltage. Thermograms of pure and composite samples have two or three peaks over all temperature ranges depending on the polarizing voltage. The decrease in peak height with increased polarized voltage is observed in pure poly(ethylene-co-vinyl acetate) samples loaded with 5%, 10%, 15%, and 30% polypyrrole due to the detrapping of the large amounts of charge results in electrode blocking and decrease in thermally stimulated depolarization current in those samples. The molecular parameters, such as activation energy E, charge released Q, and relaxation times τ0 and τ m for thermally stimulated depolarization current peaks have been estimated.

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Chang, Ai Rong. "Preparation and Study of Polyvinyl Alcohol Fiber." Applied Mechanics and Materials 727-728 (January 2015): 227–30. http://dx.doi.org/10.4028/www.scientific.net/amm.727-728.227.

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The preparation of polyvinyl alcohol fibers mainly consists of three steps: 1. The polymerization of vinyl acetate. Need the preparation of vinyl acetate and polymerization of vinyl acetate. The polymerization of vinyl acetate uses acetylene method and ethylene method.2. Preparation of PVA. Mainly to let the polyvinyl acetate taking alcoholysis reaction to the effect of methanol or sodium hydroxide. 3. Preparation of polyvinyl alcohol fiber. Complete dope preparation through washing and dehydration, dissolving, mixing, filtering and deaeration, and uses the dry, wet two methods to form the spinning. Finally, through the follow-up processing, to accomplish the preparation of polyvinyl alcohol fiber. Water soluble and high concentration polyvinyl alcohol fiber ‘s performances are fine and is application widely.

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Denisova, Yulia I., Alexey V. Roenko, Olga A. Adzhieva, Maria L. Gringolts, Georgiy A. Shandryuk, Alexander S. Peregudov, Eugene Sh Finkelshtein, and Yaroslav V. Kudryavtsev. "Facile synthesis of norbornene–ethylene–vinyl acetate/vinyl alcohol multiblock copolymers by the olefin cross-metathesis of polynorbornene with poly(5-acetoxy-1-octenylene)." Polymer Chemistry 11, no. 44 (2020): 7063–77. http://dx.doi.org/10.1039/d0py01167c.

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New norbornene−ethylene–vinyl acetate/vinyl alcohol multiblock copolymers are synthesized via the olefin cross-metathesis reaction of polynorbornene with poly(5-acetoxy-1-octenylene) followed by CC bond hydrogenation and acetoxy group deprotection.

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23

Czaniková, Klaudia, Zdenko Špitalský, Igor Krupa, and Mária Omastová. "Electrical and Mechanical Properties of Ethylene Vinyl Acetate Based Composites." Materials Science Forum 714 (March 2012): 193–99. http://dx.doi.org/10.4028/www.scientific.net/msf.714.193.

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In this study various composites based on the commercial ethylene vinyl acetate polymer matrix and multiwalled carbon nanotubes were prepared by casting from solution in the form of thick films. The degree of dispergation of carbon nanotubes in the polymer matrix was examined by scanning electron microscopy. Electrical conductivity and mechanical properties of those composites were investigated. It was observed that the electrical conductivity of composites increases with an increase of multiwalled carbon nanotubes content. The mechanical properties of composites were only slightly changed when compared with properties of neat ethylene vinyl acetate matrix.

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Denadai, Rafael, Rogério Saad-Hossne, Marie Oshiiwa, and Érika Malheiros Bastos. "Training on synthetic ethylene-vinyl acetate bench model allows novice medical students to acquire suture skills." Acta Cirurgica Brasileira 27, no. 3 (March 2012): 271–78. http://dx.doi.org/10.1590/s0102-86502012000300012.

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PURPOSE: To assess the acquisition of suture skills by training on ethylene-vinyl acetate bench model in novice medical students. METHODS: Sixteen medical students without previous surgery experience (novices) were randomly divided into two groups. During one hour group A trained sutures on ethylene-vinyl acetate (EVA) bench model with feedback of instructors, while group B (control) received a faculty-directed training based on books and instructional videos. All students underwent a both pre-and post-tests to perform two-and three-dimensional sutures on ox tongue. All recorded performances were evaluated by two blinded evaluators, using the Global Rating Scale. RESULTS: Although both groups have had a better performance (p<0.05) in the post-test when compared with the pre-test, the analysis of post-test showed that group A (EVA) had a better performance (p<0.05) when compared with group B (control). CONCLUSION: The ethylene vinyl acetate bench model allowed the novice students to acquire suture skills faster when compared to the traditional model of teaching.

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Attaelmanan Alnour Mustafa, Moatasim, Mohammed Izzeldeen Mansour Ibrahim, Mohammed Tawfeeg Mohammed Alradey, and Mohammed Altayeb Berier Alsheikh. "Effect of Using EVA as Partial Replacement for Coarse Aggregates on Concrete Properties." FES Journal of Engineering Sciences 9, no. 2 (February 22, 2021): 58–63. http://dx.doi.org/10.52981/fjes.v9i2.678.

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Ethylene-vinyl acetate (EVA), is the copolymer of ethylene and vinyl acetate. The weight percent of vinyl acetate usually varies from 10 to 40%, with the residuum being ethylene, also EVA is an elastomeric polymer that makes materials which are (rubber-like) in fineness and flexibility. In this study, EVA waste was used in the concrete mix instead of different percentages of coarse aggregates (5%, 8%, 10%, 12%) by volume. The concrete slump test was performed to measure the workability of freshly made concrete. The compression test was performed on all samples at 7 and 28 days. The results were compared with the standard mixture. It was concluded that EVA was a suitable material to replace coarse aggregates. Accordingly, the results of these experiments indicate that not only EVA can be noticed as aggregate in concrete, but also it will have more advantages in lightweight concrete than normal concrete. Using of EVA concrete shows decrease in slump for further replacement without compromising on strength. The best replacing ratio was 5% of aggregate.

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Hoffendahl, C., G. Fontaine, S. Duquesne, F. Taschner, M. Mezger, and S. Bourbigot. "The fire retardant mechanism of ethylene vinyl acetate elastomer (EVM) containing aluminium trihydroxide and melamine phosphate." RSC Adv. 4, no. 39 (2014): 20185–99. http://dx.doi.org/10.1039/c4ra01111b.

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27

Cheacharoen, Rongrong, Nicholas Rolston, Duncan Harwood, Kevin A. Bush, Reinhold H. Dauskardt, and Michael D. McGehee. "Design and understanding of encapsulated perovskite solar cells to withstand temperature cycling." Energy & Environmental Science 11, no. 1 (2018): 144–50. http://dx.doi.org/10.1039/c7ee02564e.

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Yadykina, Valentina, Svetlana N. Navolokina, and Anatoliy M. Gridchin. "The Dependence of the Modified Bitumen Properties on the Amount of Vinyl Acetate in the Sevilen Composition." Materials Science Forum 974 (December 2019): 175–80. http://dx.doi.org/10.4028/www.scientific.net/msf.974.175.

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One of the ways to improve the asphalt mixes properties is a binder modification that is part of them, with polymer additives. Ethylene copolymer with vinyl acetate as a modifying additive for the road bitumen is considered in the article. The content of the vinyl acetate amount of groups influence in the sevilen composition on the binder properties was investigated.

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29

Wang, Cancan, Yufeng Zhang, and Zhaobo Wang. "Mechanical properties, morphology, and Mullins effect of thermoplastic vulcanizates based on ethylene–vinyl acetate copolymer/ethylene–vinyl acetate rubber." Journal of Thermoplastic Composite Materials 30, no. 6 (November 5, 2015): 827–39. http://dx.doi.org/10.1177/0892705715614062.

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Thermoplastic vulcanizates (TPVs) based on ethylene–vinyl acetate copolymer (EVA)/ethylene–vinyl acetate rubber (EVM) were prepared by dynamic vulcanization. Mechanical properties, morphology, and Mullins effect of the TPVs were investigated. The results showed that the EVA/EVM TPV with 40/60 weight ratio had excellent mechanical properties. There was no obvious phase separation on the fracture surface of the TPV. Mullins effect could be observed in the stress–strain curves of TPVs during the uniaxial loading–unloading cycles. Compared with TPV with 20/80 weight ratio, the TPV with 40/60 weight ratio had the relatively larger maximum stress, residual deformation, and internal friction loss at specific strain.

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30

Lee, Hyun Jong, Beom Goo Lee, and Dae Yong Shin. "Vibration and Impact Noise Damping Properties of Wood/Polymer Composites." Materials Science Forum 486-487 (June 2005): 358–61. http://dx.doi.org/10.4028/www.scientific.net/msf.486-487.358.

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This study investigates the influence of viscoelastic properties of a series of ethylene-vinyl acetate copolymer on impact noise and vibration damping of wood/polymer/wood sandwich composites. It was found that the impact noise and vibration damping of composites are very sensitive to the state of molecular motion of polymer. The noise and vibration damping of composites was better when the polymer was in the glass transition state (vinyl acetate 55~75%) at the test-temperature, and it was worse when the polymer was in rubbery state (vinyl acetate 47~20%) or in glassy state (vinyl acetate100~87%). The impact noise decreased by about 6-12dB when the glass transition state of polymer was sandwiched between wood panels.

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31

Zedler, Łukasz, Paulina Burger, Shifeng Wang, and Krzysztof Formela. "Ground Tire Rubber Modified by Ethylene-Vinyl Acetate Copolymer: Processing, Physico-Mechanical Properties, Volatile Organic Compounds Emission and Recycling Possibility." Materials 13, no. 20 (October 20, 2020): 4669. http://dx.doi.org/10.3390/ma13204669.

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Ground tire rubber (GTR) was reclaimed and modified with 10 phr of ethylene-vinyl acetate copolymer via low-temperature extrusion process. Processing, physico-mechanical properties, volatile organic compounds emission, and recycling possibility were investigated. In order to better understand the impact of used modifiers, their efficiency was compared with trans-polyoctenamer, which is an additive that is commercially dedicated to waste rubber recycling. The results showed that a relatively small amount of ethylene-vinyl acetate copolymer improves the mechanical properties of modified reclaimed GTR and also allows further recycling by multiple processing without the deterioration of performance after three cycles.

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32

Ji, Weixiao, Bolun Jiang, Fangxing Ai, Hanxi Yang, and Xinping Ai. "Temperature-responsive microspheres-coated separator for thermal shutdown protection of lithium ion batteries." RSC Advances 5, no. 1 (2015): 172–76. http://dx.doi.org/10.1039/c4ra11500g.

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33

Calegari, Francyelle, Paulo Roberto de Oliveira, Luiz Humberto Marcolino Junior, and Márcio F. Bergamini. "A carbon black composite electrode for flow injection amperometric determination of hydrochlorothiazide." Analytical Methods 11, no. 18 (2019): 2422–27. http://dx.doi.org/10.1039/c9ay00555b.

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34

Marín, M. L., A. Jiménez, J. López, and J. Vilaplana. "Thermal degradation of ethylene (vinyl acetate)." Journal of Thermal Analysis 47, no. 1 (July 1996): 247–58. http://dx.doi.org/10.1007/bf01982703.

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35

Srivastava, S. K., M. Pramanik, and H. Acharya. "Ethylene/vinyl acetate copolymer/clay nanocomposites." Journal of Polymer Science Part B: Polymer Physics 44, no. 3 (2005): 471–80. http://dx.doi.org/10.1002/polb.20702.

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36

Demarteau, Jérémy, Julien De Winter, Christophe Detrembleur, and Antoine Debuigne. "Ethylene/vinyl acetate-based macrocycles via organometallic-mediated radical polymerization and CuAAC ‘click’ reaction." Polymer Chemistry 9, no. 3 (2018): 273–78. http://dx.doi.org/10.1039/c7py01891f.

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37

Gao, Yanzi, Wenhuan Yao, Jian Sun, Huimin Zhang, Zhendong Wang, Ling Wang, Dengke Yang, Lanying Zhang, and Huai Yang. "A novel soft matter composite material for energy-saving smart windows: from preparation to device application." Journal of Materials Chemistry A 3, no. 20 (2015): 10738–46. http://dx.doi.org/10.1039/c4ta06347c.

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38

Folie, B., C. Gregg, G. Luft, and M. Radosz. "Phase equilibria of poly(ethylene-co-vinyl acetate) copolymers in subcritical and supercritical ethylene and ethylenevinyl acetate mixtures." Fluid Phase Equilibria 120, no. 1-2 (June 1996): 11–37. http://dx.doi.org/10.1016/0378-3812(95)02981-8.

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39

Tao, Jing, Yaru Ni, Chunhua Lu, Jie Chen, Yaqiong Yuan, Jiamei Chen, and Zhongzi Xu. "Mutual protection against UV aging of EVA composites using highly active optical conversion additives." RSC Adv. 4, no. 74 (2014): 39316–21. http://dx.doi.org/10.1039/c4ra03748k.

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40

Pham, Nga Thi-Hong. "Characterization of Low-Density Polyethylene and LDPE-Based/Ethylene-Vinyl Acetate with Medium Content of Vinyl Acetate." Polymers 13, no. 14 (July 18, 2021): 2352. http://dx.doi.org/10.3390/polym13142352.

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Low-density polyethylene (LDPE) and ethylene vinyl acetate copolymer (EVA), which are non-polar and polar polymers, are immiscible and form a polyphase system. In this study, LDPE was mixed with 2.5%, 5%, 7.5%, 10%, 12.5% Ethylene-vinyl acetate (EVA-28) with a medium content of vinyl acetate (28% VA), respectively by injection molding machine and LDPE. Tensile strength and flexural strength were tested according to ASTM D638-02 standard and ISO 178 standard. The results showed that adding EVA-28 increased the elongation at break of the LDPE/2.5% EVA, LDPE/5% EVA and LDPE/10% EVA blend samples. In addition, the tensile and flexural strength of the LDPE/EVA blend decreases gradually as the EVA-28 content in the blend increases. The hardness decreases with the increasing EVA-28 content. EVA-28 spherical particles appeared scattered on the surface of the LDPE matrix, in the highest EVA-28 percent sample (12.5% EVA-28), the number of particles appeared to be quite a lot, and was dispersed quite evenly on the surface. The LDPE/EVA-28 blend achieved a higher elongation at the break than LDPE, in which 10% EVA-28 gives the highest elongation at break.

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41

Tambe, S. P., S. K. Singh, M. Patri, and Dhirendra Kumar. "Ethylene vinyl acetate and ethylene vinyl alcohol copolymer for thermal spray coating application." Progress in Organic Coatings 62, no. 4 (June 2008): 382–86. http://dx.doi.org/10.1016/j.porgcoat.2008.02.006.

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42

TOCHMAN, LISA M., CHARLES M. STINE, and BRUCE R. HARTE. "Thermal Treatment of Cottage Cheese “In-Package” by Microwave Heating1." Journal of Food Protection 48, no. 11 (November 1, 1985): 932–38. http://dx.doi.org/10.4315/0362-028x-48.11.932.

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Small-curd cottage cheese was packaged in polystyrene tubs and subjected to heat treatments of 37–82.2°C using .5 and 2.8 kw microwave sources. Cottage cheese was also packed in flexible pouches (laminate structure of ethylene vinyl acetate/polyvinylidene chloride/ethylene vinyl acetate - EVA/PVDC/EVA) and polyethylene tubs and subjected to heat treatments of 37.0 – 82.2°C. Moisture content, syneresis, microbial population, pH and sensory properties were monitored until samples were considered no longer acceptable. The shelf life of samples ranged from 7 to 42 d. Optimum quality was observed when the packaged cheese was heated to 48.8°C using the low power source. Cheese packed in the flexible pouches had the longest shelf life.

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43

Qian, Yi, Xiaoyan Zhu, Shanshan Li, and Xilei Chen. "Flame-retardant properties of ethylene-vinyl acetate/oil sludge/ fumed silica composites." RSC Advances 6, no. 67 (2016): 63091–98. http://dx.doi.org/10.1039/c6ra03280j.

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44

Qian, Chen, Yaofeng Zhu, Yubing Dong, and Yaqin Fu. "Vapor-grown carbon nanofiber/poly(ethylene-co-vinyl acetate) composites with electrical-active two-way shape memory behavior." Journal of Intelligent Material Systems and Structures 28, no. 19 (March 28, 2017): 2749–56. http://dx.doi.org/10.1177/1045389x17698246.

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Vapor-grown carbon nanofibers were filled into poly(ethylene-co-vinyl acetate) through solution mixing to achieve electrical-active two-way shape memory. The vapor-grown carbon nanofiber/poly(ethylene-co-vinyl acetate) nanocomposites were systematically and explicitly investigated through combined analytical techniques. Experimental results showed an increase in crystallization temperature ( Tc) and a decrease in melting temperature ( Tm) as the vapor-grown carbon nanofiber concentration in the nanocomposites increased. This result indicates that carbon nanofibers can act as nucleating agents during crystallization but may hinder the formation of thermodynamically stable crystals. The nanocomposites had a higher modulus but a lower strength than pure poly(ethylene-co-vinyl acetate). In two-way shape memory testing, a decrease in reversible strain and shape recovery occurred in the nanocomposites. Nevertheless, obvious two-way shape switching was observed in all samples during cyclic heating and cooling. The nanocomposite with 15% vapor-grown carbon nanofibers could be electrically heated rapidly and uniformly because of the high conductivity of vapor-grown carbon nanofibers and their uniform distribution in the matrix. Finally, the electrical-active two-way shape memory effect was achieved. This work contributes to the design of electrical-active two-way shape memory polymers in device applications for advanced functions.

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45

Zhu, Hui Mei, Pei Ming Wang, Guo Fang Zhang, and Ru Wang. "Effects of Redispersible EVA and E/VL/VC Powders on Properties of Decorative Mortar." Advanced Materials Research 687 (April 2013): 241–48. http://dx.doi.org/10.4028/www.scientific.net/amr.687.241.

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Redispersible polymer powders of Vinyl acetate / ethylene copolymer (EVA) and Ethylene/vinyl laurate/vinyl chloride copolymer (E/VL/VC) were applied to modify decorative mortar. Results showed that EVA and E/VL/VC both smoothed the surface of mortar, decreased the leachability of Ca2+, K+, Na+ ions and increased the leachability of SO42- in the surface leaching solution. However, with redispersible EVA and E/VL/VC being the same content, E/VL/VC-modified mortar hydrated for 1d showed lower bulk density, better surface hydrophobicity, higher alkalis leachability and more severe efflorescence. Moreover, EVA and E/VL/VC both had little influence on the components of efflorescence substances on the surface of mortar.

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46

Zhou, Keqing, Gang Tang, Saihua Jiang, Zhou Gui, and Yuan Hu. "Combination effect of MoS2 with aluminum hypophosphite in flame retardant ethylene-vinyl acetate composites." RSC Advances 6, no. 44 (2016): 37672–80. http://dx.doi.org/10.1039/c6ra04861g.

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47

Shafeeq, V. H., and G. Unnikrishnan. "Matrix–filler interactions and solvent sorption features of nanohydroxyapatite (nHA) embedded ethylene-co-vinyl acetate (EVA)–millable polyurethane (MPU) blends." Physical Chemistry Chemical Physics 22, no. 41 (2020): 23627–36. http://dx.doi.org/10.1039/d0cp04275g.

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48

Dutta, Joyeeta, and Kinsuk Naskar. "Investigation of morphology, mechanical, dynamic mechanical and thermal behaviour of blends based on ethylene vinyl acetate (EVA) and thermoplastic polyurethane (TPU)." RSC Adv. 4, no. 105 (2014): 60831–41. http://dx.doi.org/10.1039/c4ra07823c.

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Novel blends based on EVA (ethylene vinyl acetate) and TPU (thermoplastic polyurethane) have been developed and characterized which may find potential applications in the cable and footwear industries.

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49

Yu, Haiyang, Yong Zhang, and Wentan Ren. "Toughening effect of ethylene-vinyl acetate rubber on nylon 1010 compatibilized by maleated ethylene-vinyl acetate copolymers." Journal of Polymer Science Part B: Polymer Physics 47, no. 4 (February 15, 2009): 434–44. http://dx.doi.org/10.1002/polb.21648.

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Zhang, Rui, Xianru He, Qian Chen, and Lingyao Meng. "Non-Isothermal Crystallization Behaviors of Ethylene Vinyl Acetate Copolymer and Ethylene Vinyl Acetate Copolymer-Graft-Maleic Anhydride." Journal of Macromolecular Science, Part B 54, no. 12 (October 6, 2015): 1515–31. http://dx.doi.org/10.1080/00222348.2015.1103394.

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