Готові списки джерел за темами / Polyethylends blends

Добірка наукової літератури з теми "Polyethylends blends"

Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Polyethylends blends"

1

Wang, Kun Yuan, Qiu Ju Sun, Yan Liu, and Jie Lu. "Thermal Behavior, Mechanical Property and Microstructure of Low-Density Polyethylene Filled by Diatomite." Applied Mechanics and Materials 633-634 (September 2014): 413–16. http://dx.doi.org/10.4028/www.scientific.net/amm.633-634.413.

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Анотація:
Diatomite was treated by titanate coupling agent and blended with low-density polyethylene (LDPE) by the method of melt-mixing blend. The performance of the blends, such as thermal behavior, mechanical property and microstructure, were analyzed with differential scanning calorimetry, thermo-gravimetric analysis, tensile strength testing and scanning electron microscopy. The results showed that influenced the crystalline behavior of LDPE phase in the blends and made the crystallization rate of LDPE phase decreased. Moreover, the thermo-decomposing temperature of the blends increased with increasing the diatomite content, diatomite significantly improved the thermal stability of the blends. Tensile strengths of the blends firstly decreased and then increased. When the diatomite content was 30%wt, the tensile strength of the blend reached to 14.6MPa. SEM photographs showed the good dispersion and interaction.
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2

Ismail, H., N. Z. Noimam, H. W. Woon, and J. N. M. Ridhwan. "The Effects of Carbon Black, Silica and Calcium Carbonate in Virgin PE/Recycle PE/EPDM Blends: Thermal Properties & Swelling Analysis." Advanced Materials Research 795 (September 2013): 372–76. http://dx.doi.org/10.4028/www.scientific.net/amr.795.372.

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The effects of carbon black (CB), silica and calcium carbonate (CaCO3) in virgin polyethylene (vPE)/recycle polyethylene (rPE)/ethylene propylene diene terpolymer (EPDM) blends were investigated. rPE was melt blended with EPDM in different ratio by using a Haake Rheomix. The characterization such as swelling analysis and thermal properties were examined. Results indicated that, vPE/rPE/EPDM blend with CB show best oil (ASTM IRM 903) and toluene resistant and also thermal properties compared with silica and CaCO3.
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3

Yap, E. P., S. C. Koay, M. Y. Chan, H. L. Choo, T. K. Ong, and K. Y. Tshai. "Recycling Polymer Blend made from Post-used Styrofoam and Polyethylene for Fuse Deposition Modelling." Journal of Physics: Conference Series 2120, no. 1 (December 1, 2021): 012021. http://dx.doi.org/10.1088/1742-6596/2120/1/012021.

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Abstract Styrofoam is widely used as packaging material for many applications like home furniture and electrical appliance. Styrofoam is a non-biodegradable material which its disposal causes serious environment issues. This research demonstrates an alternate recycling method of Styrofoam waste by converting it into 3D printing filament for Fused Deposition Modelling (FDM). For this research, the recycled polystyrene (rPS) was extracted from Styrofoam waste and blended with low-density polyethylene (LDPE), then extruded into filament using a filament extruder. The formulated rPS/LDPE blend with different blend ratio exhibited a good printability when the printing temperature and extrusion rate fixed at 240°C and 120%. However, the tensile strength of printed specimens with rPS/LDPE blends were lower than printed specimen with neat rPS. The tensile strength and modulus of printed specimens with rPS/LDPE were decreased due to the increase of LDPE content. The decrease of tensile strength mainly caused by the incompatibility between the rPS and LDPE phases. However, the addition of more LDPE content in the blend enhanced the ductility of rPS/LDPE blends. Furthermore, the increase of LDPE content also increased the thermal stability of rPS/LDPE blends. Overall, the rPS/LDPE blend is a potential alternate material for producing FDM filament.
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4

Hemsri, Sudsiri, Patthamas Bunsripirat, and Punnakit Nakkarat. "Effect of Plasticizers on Morphology, Mechanical Properties and Water Absorption of Wheat Gluten and Epoxidized Natural Rubber Blend." Key Engineering Materials 737 (June 2017): 287–93. http://dx.doi.org/10.4028/www.scientific.net/kem.737.287.

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Wheat gluten (WG) plastics are inherently brittle and sensitive to water. In this research, wheat gluten was blended with epoxidized natural rubber containing 50 mol% epoxide group (ENR-50) to improve flexibility and water resistance of WG plastics. Three plasticizers (i.e. glycerol (Gly), polyethylene glycol (PEG) and dioctyl phthalate (DOP) were used to enhance polymer chain mobility and process ability of WG phase in the blends. Differential scanning calorimetry (DSC) was used to evaluate plasticizing efficiency of plasticizers on WG. The DSC result revealed that an excellent plasticizer for WG was glycerol which could remarkably reduce glass transition temperature (Tg) of WG. Furthermore, effect of plasticizer types and contents (0, 10, 20 and 30wt% with respect to protein weight) on morphology, mechanical properties and water absorption of the WG/ENR blends was investigated. It was found that an enhancement in ductility and impact strength of the blends was observed with increasing plasticizer content. Among the plasticized WG/ENR blends, the glycerol-plasticized blend provided better homogenous morphology and superior results in tensile and impact properties. On the other hand, the Gly-plasticized WG/ENR blend showed a low water resistance compared with the blends plasticized with PEG and DOP as well as the unplasticized WG/ENR blend.
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5

Santos, Raquel M., Anna R. M. Costa, Yêda M. B. Almeida, Laura H. Carvalho, João M. P. Q. Delgado, Elisiane S. Lima, Hortência L. F. Magalhães, et al. "Thermal and Rheological Characterization of Recycled PET/Virgin HDPE Blend Compatibilized with PE-g-MA and an Epoxy Chain Extender." Polymers 14, no. 6 (March 12, 2022): 1144. http://dx.doi.org/10.3390/polym14061144.

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In this work, recycled poly(ethylene terephthalate) (PETR) was blended with virgin high-density polyethylene (HDPE) in an internal mixer in an attempt to obtain a material with improved properties. A compatibilizer (PE-g-MA) and a chain extender (Joncryl) were added to the PETR/HDPE blend and the rheological and thermal properties of the modified and unmodified blends as well as those of virgin PET with virgin HDPE (PETV/HDPE). All the blends were characterized by torque rheometry, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The data obtained indicate that the incorporation of either the chain extender or the compatibilizer agent led to increases in torque (and hence in viscosity) of the blend compared to that of the neat polymers. The joint incorporation of the chain extender and compatibilizer further increased the viscosity of the systems. Their effect on the crystallinity parameters of HDPE was minimal, but they reduced the crystallinity and crystallization temperature of virgin and recycled PET in the blends. The thermal stability of the PETR/HDPE blend was similar to that of the PETV/HDPE blend, and it was not affected by the incorporation of the chain extender and/or compatibilizer.
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6

Aldosari, Haia. "Investigation the Phase Separation in Metallocene Linear Low Density Polyethylene/Polypropylene Blends." Advanced Materials Research 1159 (September 2020): 1–18. http://dx.doi.org/10.4028/www.scientific.net/amr.1159.1.

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The present study is aimed at investigated the miscibility in binary blend the Metallocene linear low density polyethylene (PE) and the Polypropylene homo (PP). Metallocene linear low density polyethylene is one of LLDPEs but with lower density higher melt flow index (MFI) than conventional LLDPE. The polyethylene and polypropylene blends (PB) were prepare by using o-xylene as solvent and polyethylene-co-glycidyl methacrylate (PE-co-GMA) as compatibilizer promote blending of immiscible homopolymers and the stability of the blend . The composites were characterized by wide angle X-ray diffraction (WAXD). Long period spacing was obtained using small angle X-ray scattering (SAXS).Crystallinity and melting behavior were studying by use the DSC and TGA, Metallocene linear low density polyethylene provide better behavior than the conventional LLDPE. The tensile test and DMA test were applied on the blends, which displayed improvement on the blend properties by using the PE-co-GMA and confirm the incompatible nature of the blends.
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Alwaan, Ismaeel M., and Azman Hassan. "The effects of magnesium oxide on the thermal, morphological, and crystallinity properties of metallocene linear low-density polyethylene/rubbers composite." Journal of Polymer Engineering 33, no. 3 (May 1, 2013): 229–38. http://dx.doi.org/10.1515/polyeng-2013-0014.

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Abstract The effects on the thermal, morphological, and crystallinity properties of the different loadings of magnesium oxide (MgO) blended with 10% rubbers [9:1 natural rubber (NR)/epoxidized NR] and metallocene linear low-density polyethylene (mLLDPE) in the presence of N,N-m-phenylenebismaleimide (HVA-2) compatibilizer were investigated. Fourier transform infrared spectroscopy showed that the epoxy and double-bond groups were absent in the blends. The crystallinity degree of mLLDPE composites were determined based on the results of differential scanning calorimetry. The crystallinity of the blends was continuously increased by the loading of MgO compared with blend of 0 phr MgO. Based on thermogravimetric analysis, the degradation temperature of NR in the blends with MgO is significantly enhanced compared with a pure NR and 0 phr MgO blend. The observations of the scanning electron micrographs indicate that the HVA-2 had caused a cross-linking reaction in the rubber phase and the domains of the MgO are separated from the continuous phase (mLLDPE).
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Zhang, Lin, Libin Wang, Yujiao Shi, and Zhaobo Wang. "Dynamically vulcanized high-density polyethylene/nitrile butadiene rubber blends compatibilized by chlorinated polyethylene." Journal of Thermoplastic Composite Materials 32, no. 4 (February 28, 2018): 454–72. http://dx.doi.org/10.1177/0892705718761557.

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Thermoplastic vulcanizates (TPVs) based on high-density polyethylene (HDPE)/nitrile butadiene rubber (NBR) blends were prepared by dynamic vulcanization where chlorinated polyethylene (CPE) was used as a compatibilizer. The effects of CPE on mechanical properties, Mullins effect, dynamic mechanical properties, and morphology of the blends were investigated systematically. Experimental results indicated that CPE had an excellent compatibilization on the HDPE/NBR blends. Dynamic mechanical analysis studies showed that the glass transition temperature of NBR phase was slightly shifted toward higher temperature with the CPE incorporation, leading to the increasing interface compatibility. Mullins effect results showed that the compatibilized HDPE/NBR blend had relatively lower residual deformation and internal friction than that of HDPE/NBR blend, indicating the improvement of elasticity. Morphology studies showed that the size of the NBR particles was decreased with the existence of CPE; moreover, the fracture surface of HDPE/CPE/NBR TPV was relatively smoother than that of HDPE/NBR blend.
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Dikobe, DG, and AS Luyt. "Investigation of the morphology and properties of the polypropylene/low-density polyethylene/wood powder and the maleic anhydride grafted polypropylene/low-density polyethylene/wood powder polymer blend composites." Journal of Composite Materials 51, no. 14 (September 14, 2016): 2045–59. http://dx.doi.org/10.1177/0021998316668399.

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Анотація:
The properties of polypropylene/low-density polyethylene and maleic anhydride grafted polypropylene/low-density polyethylene blends, and their wood powder composites are compared in this study. The blends contained equal amounts of polymers, and the wood powder was added into the blends to form polypropylene/low-density polyethylene/wood powder and maleic anhydride grafted polypropylene/low-density polyethylene/wood powder ternary systems. The Fourier-transform infrared analysis of the blends and composites did not provide any evidence of significant interactions between the different components, although the rest of the results clearly showed that maleic anhydride grafted polypropylene and wood powder significantly interacted, and that there was some interaction between maleic anhydride grafted polypropylene and low-density polyethylene. The differential scanning calorimetry and dynamic mechanical analysis results confirmed the immiscibility of polypropylene and low-density polyethylene, and polypropylene and maleic anhydride grafted polypropylene, and indicated that wood powder was distributed in both the low-density polyethylene and polypropylene phases in the polypropylene/low-density polyethylene blend, but most probably only in the maleic anhydride grafted polypropylene phase in the maleic anhydride grafted polypropylene/low-density polyethylene blend. The polypropylene/low-density polyethylene and maleic anhydride grafted polypropylene/low-density polyethylene blends were found to be more thermally stable than the neat polymers, while the presence of wood powder in both polymer blends further increased the thermal stability of the polymers. The blends and composites with maleic anhydride grafted polypropylene showed higher tensile modulus values and lower elongation at break values than the composites with polypropylene, while the stress at break values of the two sets of samples were comparable.
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Baimark, Yodthong, and Theeraphol Phromsopha. "Controlling Crystallization, Mechanical Properties and Heat Resistance of Poly(L-lactide)-b-polyethylene glycol)-b-poly(L-lactide) Bioplastic by Melt Blending with Low Molecular Weight Poly(D-lactide)/Poly(L-lactide) Mixtures." Asian Journal of Chemistry 34, no. 7 (2022): 1857–62. http://dx.doi.org/10.14233/ajchem.2022.23791.

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Анотація:
The crystallization behaviour, mechanical properties and heat resistance were determined for mixtures of poly(L-lactide)-b-polyethylene glycol-b-poly(L-lactide) (PLLA-PEG-PLLA) blended with poly(D-lactide)/poly(L-lactide) with m.w. of 6,000 g/mol (PDLA6k/PLLA6k). These blends were prepared by melt blending. PLLA-PEG-PLLA/PDLA6k/PLLA6k ratios of 90/10/0, 90/7.5/2.5, 90/5/5, 90/2.5/7.5 and 90/0/10 %wt. were investigated. PLLA-PEG-PLLA/PDLA6k and PLLA-PEG-PLLA/PLLA6k blends were also prepared for comparison. The presence of PDLA6k/PLLA6k mixture improved crystallization and heat resistance of PLLA-PEG-PLLA and this improvement was related to increased PDLA6k content. However, the 90/10/0 blend film was brittle but 90/7.5/2.5, 90/5/5, 90/2.5/7.5 and 90/0/10 blend films were not. The PLLA6k blending enhanced film flexibility. The results suggested that the PLLA-PEG-PLLA blends with controllable mechanical properties and heat resistance can be prepared by varying the PDLA6k/PLLA6k ratio for use as flexible and heat-resistant biodegradable bioplastics.
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Більше джерел

Дисертації з теми "Polyethylends blends"

1

Desidera, Cassiane. "Blendas de poliamida reciclada e polietileno proveniente da recuperação de embalagens multicamadas." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/248790.

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Анотація:
Orientador: Maria Isabel Felisberti
Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica
Made available in DSpace on 2018-08-09T13:26:12Z (GMT). No. of bitstreams: 1 Desidera_Cassiane_D.pdf: 2267266 bytes, checksum: 9f026acbcd18caa17f017b257c7f0b46 (MD5) Previous issue date: 2007
Resumo: Blendas de poliamida e polietileno são exemplos de misturas imiscíveis e incompatíveis. Entretanto, a compatibilidade pode ser alcançada adicionando-se compatibilizantes ou promovendo a mistura reativa. Neste projeto teve-se como objetivo o preparo e a caracterização de blendas de poliamida-66 reciclada (rPA-66) e diferentes polietilenos, incluindo materiais virgens e reciclados: 1) vPEBD - polietileno de baixa densidade virgem, 2) vEMAA - poli(etileno-co-ácido metacrílico) virgem, 3) rPEBD - uma mistura reciclada contendo PEBD e EMMA, e 4) PEAI - uma mistura reciclada contendo PEBD, EMMA e alumínio particulado. As blendas foram preparadas em extrusora dupla rosca e os corpos de prova, obtidos por injeção, foram caracterizados por análise dinâmico-mecânica (DMA), microscopia eletrônica de varredura (SEM), calorimetria exploratória diferencial (DSC), análise termogravimétrica (TG), espectroscopia de infravermelho com transformada de Fourier (FTIR), ensaios de solubilidade seletiva, índice de fluidez (IF) e testes mecânicos de tração e de resistência ao impacto. Foi constatada a formação de um copolímero de enxertia (PE-g-rPA66) gerado in situ durante o processamento, o qual promoveu uma maior adesão interfacial para as blendas rPA-66/vEMAA, rPA-66/rPEBD e rPA-66/PEAI em relação à blenda rPA-66/vPEBD. A degradação prévia sofrida pelos polímeros reciclados (rPEBD e PEAI) durante sua vida útil e etapas de reciclagem, mostrou ser um fator importante para a obtenção do copolímero de enxertia. Em especial, o PEAI apresenta a maior susceptibilidade à degradação devido ao efeito catalítico das partículas de alumínio, fator este que levou a maior formação do copolímero PE-g-rPA-66 em relação aos outros polietilenos. De maneira geral, as blendas apresentaram resistência ao impacto e deformação na ruptura superiores às da poliamida e estabilidade térmica superior a do polietileno
Abstract: Polyamide and polyethylene blends are examples of immiscible and incompatible systems. However, the compatibility can be reached adding compatibilizer to the system or promoting the reactive blending. The aim of this work was to prepare and characterize blends of recycled polyamide-66 (rPA-66) with different grades of polyethylenes, including virgin and recycled materials obtained from recovered multilayer packaging: 1) vLDPE - virgin low density polyethylene, 2) vEMAA - virgin ethylene-methacrylic acid copolymer (EMAA), 3) rLDPE - a recycled mixture of two polymers: LDPE and EMAA and 4) PEAI - a mixture of three materials: LDPE, EMAA and aluminum particles. The blends were prepared in a twin screw extruder and characterized by dynamic-mechanical analysis (DMA), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Fourier Transformed Infra Red Spectroscopy (FTIR), solubility tests, melt flow index (MFI) and impact and tensile tests. The grafted copolymer (PE-g-rPA66) was generated in situ during the processing. This copolymer provided higher interfacial adhesion of rPA-66/EMAA, rPA-66/rLDPE and rPA-66/PEAI blends in comparison with the PA-66/vLDPE blend. The previous degradation suffered by the recycled polymers (rLDPE and PEAI) in their usefull life and the recycling stages, as well their higher susceptibility to the thermal degradation in the processing step, seems to be an important factor for obtaining the grafted copolymer (PE-g-rPA66). The aluminum particles accelerated the LDPE degradation and also improved the grafting copolymerization in comparison with others polyethylenes. In general, the blends showed higher impact strength and elongation at break that polyamide and higher thermal stability that polyethylene
Doutorado
Físico-Química
Doutor em Ciências
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2

Isik, Fatma. "Nanocomposites Based On Blends Of Polyethylene." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/3/12606338/index.pdf.

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In this study the effects of compatibilizer type, organoclay type, and the addition order of components on the morphological, thermal, mechanical and flow properties of ternary nanocomposites based on low density polyethylene, LDPE were investigated. As compatibilizer, ethylene/methyl acrylate/glycidyl methacrylate, ethylene/glycidyl methacrylate, and ethylene/butyl acrylate/maleic anhydride
as organoclay Cloisite&
#61666
15A, Cloisite&
#61666
25A and Cloisite&
#61666
30B were used. All samples were prepared by a co-rotating twin screw extruder, followed by injection molding. Before producing the ternary nanocomposites, in order to determine the optimum amount of the organoclay and compatibilizer, binary mixtures of LDPE/organoclay and LDPE/compatibilizer blends with different compositions were prepared. Based on the results of the mechanical tests, compatibilizer and organoclay contents were determined as 5 wt. % and 2 wt % respectively. After that, ternary nanocomposites were prepared with each compatibilizer/organoclay system and characterization of these nanocomposites was performed. Among the investigated addition orders, mechanical test results showed that the best sequence of component addition was (PCoC), in which LDPE, compatibilizer and organoclay were simultaneously compounded in the first run of the extrusion. Considering the ternary nanocomposites, compositions of LDPE/E-MA-GMA/15A, LDPE/E-GMA/15A and LDPE/E-nBA-MAH/30B showed the highest improvement in mechanical properties. According to the DSC analysis, addition of organoclay and compatibilizer does not influence the melting behavior of the compositions and both compatibilizers and organoclay types have no nucleation activity in LDPE. In the X-Ray analysis, the highest increase of the basal spacing for ternary nanocomposites obtained for LDPE/E-BA-MAH/organoclay nanocomposites. This increase was 83 %, 198 %, and 206 % for samples containing 15A, 25A and 30B respectively.
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3

Zhang, Ai Yang. "Physical property enhancement of polyethylene blends." Thesis, Brunel University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285090.

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4

Finlay, Joanna. "A study of polyolefin blends." Thesis, University of Bristol, 2003. http://hdl.handle.net/1983/765bb977-09b6-424e-970d-4c052a37f3f3.

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5

Hosier, Ian L. "Morphology and electrical properties of polyethylene blends." Thesis, University of Reading, 1996. https://eprints.soton.ac.uk/265714/.

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Structure-property relationships in binary polyethylene blends, and how they relate to electrical strength, have been investigated by various analytical steps. Scanning and transmission electron microscopy have been used to characterise in detail the microstructure of blends composed of linear (LPE) and branched (BPE) polyethylene, these have shown a general increase in the size of isothermally crystallised spherulites with increasing LPE content. On increasing the crystallisation temperature, spherulites became more compact and better separated, whereas on quenching, a morphology essentially independent of LPE content was obtained. Differential scanning calorimetry revealed a two phase system whose composition did not depend on LPE content. Electrical testing using an AC ramped voltage, between parallel ball bearing electrodes, was employed to characterise the electrical insulation strength of the materials. Morphological, rather than molecular factors, were found to be key at influencing the electrical strength. Electrical strength was also found to be highly sensitive to the testing procedure and sample geometry employed. From computer simulations it was found that the general patterns of tree growth depended on sample geometry, test conditions, and morphology, in a similar way to that found by experiment. The idea of dielectric failure due to a propagating damage structure is not inconsistent with the simulated or experimental data. A variety of blend systems were also subjected to mechanical tensile deformation and it was found that the morphology was affected significantly, even for small deformations within the elastic limit. Consequently, the electrical strength was reduced by mechanical tensile strain. A 16% increase in electrical strength over BPE alone, could be achieved by the use of a carefully formulated blend, which has potential for commercial exploitation.
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6

Minick, Jill Suzanne. "Microstructural analysis of polyethylenes and their blends and copolymers." Case Western Reserve University School of Graduate Studies / OhioLINK, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=case1058204252.

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7

陳仁英 and Din-eng Sy. "Reprocessing characteristics of polyethylene and its binary blends." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B43893673.

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8

Rabie, Allan John. "Blends with low-density polyethylene (LDPE) and plastomers." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/49870.

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Анотація:
Thesis (MSc)--Stellenbosch University, 2004.
ENGLISH ABSTRACT: This study describes the design, building and optimization of a fully functional preparative TREF (Prep-TREF) apparatus. This apparatus allows for the fractionation of semicrystalline polyolefins according to the crystallizability of the molecules. Various factors, such as the sample cooling rate and the effect of on-support and off-support crystallization, are investigated. The preparative TREF is used to fractionate a commercial low-density polyethylene (LOPE), two commercially available plastomers (polyethylene-l-octene copolymers), as well as blends of the LOPE and the respective plastomers. It is shown that in each case the samples fractionated by crystallizability. The fractions recovered from the Prep-TREF were characterized by CRYSTAF, OSC and NMR analysis. It is shown how the results of this preparative fractionation allow for a better understanding of the molecular heterogeneity in the LOPE and plastomers. New ways of presenting the data from the preparative fractionation, in terms of 3- dimensional plots, are also investigated. These plots offer a novel way of presenting the molecular heterogeneity in the samples in terms of the molecular crystallizability. These plots highlight features that are difficult to detect in the conventional two-dimensional plots. In conclusion, the influences of various blending ratios of LOPE and plastomer on the morphological and physical properties of the blends, such as haze, clarity, and tear-and impact strength are determined.
AFRIKAANSE OPSOMMING: Die doel van hierdie studie was die ontwikkeling en optimisering van 'n ten volle funksionerende TREF. Hierdie tegniek word gebruik om polimeermengsels te fraksioneer deur gebruik te maak van die kristaliseerbaarheid van polimere. Verskeie faktore soos die afkoel spoed en die effect van met en sonder 'n ondersteuning(seesand) vir kristaliseering was ondersoek. Hierna is navorsing gedoen om 'n beter begrip ten opsigte van die meganiese, fisiese en optiese eienskappe van lae-digtheid poliëtileen (LDPE) te ontwikkel. Hierdie LDPE is met die affiniteitsreeks plastomere van die maatskappy, Dow Chemicals, gemeng om tendense in die gefraksioneerde polimere te indentifiseer. Een van Sasol se kommersiële LDPE produkte en twee van Dow Chemicals se plastomere is individueel gefraksioneer. Die mengsel van die twee ongefraksioneerde LDPE en plastomere is nog nooit voorheen op 'n molekulêre basis ondersoek nie. Dit is in hierdie studie gedoen deur van TREF gebruik te maak. Nuwe maniere is ontwikkel om data op 'n nuwe manier voor te stel deur middel van 3 Dimensionele grafieke te skep om resultate voor te stel wat andersins baie moelilik was om voor te stel in een dimensie agv die hoeveelheid data wat geinterpreteer word. Ten slotte is die invloed van die verskillende mengverhoudings van LDPE en plastomere op die morfologiese en fisiese eienskappe soos deursigtigheid, helderheid, skeur- en impaksterkte, ook ondersoek.
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Koliada, Maksym, Viktoriia Plavan, and Bohdan Savchenko. "PROPERTIES OF COLLAGEN-BASED WASTE/POLYETHYLENE THERMOPLASTIC BLENDS." Thesis, Kaunas University of Technology, 2016. https://er.knutd.edu.ua/handle/123456789/4771.

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Sy, Din-eng. "Reprocessing characteristics of polyethylene and its binary blends." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17545754.

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Книги з теми "Polyethylends blends"

1

Thomas, Jince, Sabu Thomas, and Zakiah Ahmad, eds. Crosslinkable Polyethylene Based Blends and Nanocomposites. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0486-7.

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2

Visakh, P. M., and María José Martínez Morlanes, eds. Polyethylene-Based Blends, Composites and Nanocomposites. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781118831328.

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Polyethylene-based blends, composites and nanocomposities. Hoboken, New Jersey: Wiley, 2015.

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4

Nouri, Mohammad Razavi. Thermal and mechanical properties of polypropylene, metallocene polyethylenes and their blends. Birmingham: University of Birmingham, 2002.

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5

Steadman, Stuart Charles. The in-situ production of polyethylene fibres from polymer blends. Uxbridge: Brunel University, 1990.

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6

Mittal, Vikas. Polyethylene Based Blends and Composites. Central West Publishing, 2021.

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7

Visakh, P. M., Cristina Della Pina, and Ermelinda Falletta. Polyaniline Blends, Composites, and Nanocomposites. Elsevier Science & Technology Books, 2017.

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8

Visakh, P. M., Cristina Della Pina, and Ermelinda Falletta. Polyaniline Blends, Composites, and Nanocomposites. Elsevier, 2017.

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9

M, Visakh P., and María José Martínez Morlanes. Polyethylene-Based Blends, Composites and Nanocomposities. Wiley & Sons, Incorporated, John, 2015.

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10

M, Visakh P., and María José Martínez Morlanes. Polyethylene-Based Blends, Composites and Nanocomposities. Wiley & Sons, Limited, John, 2015.

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Частини книг з теми "Polyethylends blends"

1

Utracki, L. A. "Polyethylene blends." In Commercial Polymer Blends, 230–53. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5789-0_14.

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2

Utracki, Leszek A. "Polyethylenes and Their Blends." In Polymer Blends Handbook, 1559–732. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-6064-6_21.

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3

Fink, Johannes. "Bio-Polyethylene and Polyethylene-Biopolymer Blends." In Handbook of Industrial Polyethylene and Technology, 1253–95. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781119159797.ch50.

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4

Marchante, Veronica, and Maribel Beltrán. "Montmorillonite Polyethylene Nanocomposites." In Polyethylene-Based Blends, Composites and Nanocomposites, 257–80. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781118831328.ch8.

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5

Utracki, L. A. "Melt Flow of Polyethylene Blends." In ACS Symposium Series, 153–210. Washington, DC: American Chemical Society, 1989. http://dx.doi.org/10.1021/bk-1989-0395.ch007.

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6

Fernandes, Emanuel M., João F. Mano, and Rui L. Reis. "Polyethylene Composites with Lignocellulosic Material." In Polyethylene-Based Blends, Composites and Nanocomposites, 117–61. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781118831328.ch5.

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7

Plesek, M., and Z. Malac. "POLYPROPYLENE MORPHOLOGY IN BLENDS WITH POLYETHYLENE." In Morphology of Polymers, edited by Blahoslav Sedláček, 347–54. Berlin, Boston: De Gruyter, 1986. http://dx.doi.org/10.1515/9783110858150-028.

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8

Ray, Sudip, Ashveen Nand, and Paul A. Kilmartin. "Polyethylene-Based Conducting Polymer Blends and Composites." In Polyethylene-Based Blends, Composites and Nanocomposites, 93–116. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781118831328.ch4.

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Luo, Chuan, Shujun Dai, Fengping Ni, Chen Ruan, Haisong Ying, and Lifeng Yuan. "Determination of content of recycled polyethylene and polyethylene terephthalate blends." In Advances in Energy, Environment and Chemical Engineering Volume 1, 395–400. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003330165-57.

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10

Visakh, P. M., and María José Martínez Morlanes. "Polyethylene-Based Blends, Composites and Nanocomposites: State-of-the-Art, New Challenges and Opportunities." In Polyethylene-Based Blends, Composites and Nanocomposites, 1–19. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781118831328.ch1.

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Тези доповідей конференцій з теми "Polyethylends blends"

1

Balogun, Ademola, Toyin Odutola, and Yakubu Balogun. "Preventing Wax Deposition in Crude Oil Using Polyethylene Butene and Nano Zinc Oxide." In SPE International Conference on Oilfield Chemistry. SPE, 2021. http://dx.doi.org/10.2118/204317-ms.

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Анотація:
Abstract This research examines the use of 75nm Zinc Oxide nanoparticles (Nano ZnO) and Polyethylene Butene (PEB) in reducing the viscosity of Nigerian waxy crude oil. The rheology of the crude oil was studied by measuring the viscosity and shear stress of crude samples contaminated with varying concentration of PEB (500ppm, 1000ppm, 2000ppm, 3000ppm, 4000ppm and 5000ppm), varying concentrations of Nano ZnO (1wt%, 2wt%, 3wt% and 4wt%) and different blends of PEB and Nano ZnO at temperatures of between 10°C to 35°C and shear rates from 1.7 to 1020s-1. From Rheological Modelling analysis conducted, the Power law pseudoplastic model was the best fit for the experimental data with a regression coefficient of 0.99. Analysis of crude sample before addition of inhibitor showed evidence of non-Newtonian fluid behaviour as the shear stress-shear rate relationship curves were nonlinear due to wax precipitation at low temperatures (10°C to 15°C). The waxy crude demonstrated shear thinning behaviour with increasing shear rates (increasing turbulence) and the viscosity reduced with increasing temperature. The addition of inhibitors (PEB, Nano ZnO and their blends) effected Newtonian fluid behaviour in the crude samples as the shear stress-shear rate relationship curves were linear at all temperatures under study. The optimum concentration of the inhibitors in this study is 2000ppm PEB (causing 33% viscosity reduction) and 1wt% Nano ZnO (effecting 26% viscosity reduction). The best concentration of the blend was 2000ppm PEB blended with 1wt% Nano ZnO which effected a viscosity reduction of 41%. The research demonstrates the novel application of the blend of Nano ZnO and PEB in improving flowability of Nigerian waxy crude oil especially in offshore conditions with prevailing cold temperatures.
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2

Gawne, D. T., Y. Bao, and T. Zhang. "Influence of Polymer Composition on the Deposition of UHMWPE Coatings." In ITSC2003, edited by Basil R. Marple and Christian Moreau. ASM International, 2003. http://dx.doi.org/10.31399/asm.cp.itsc2003p1639.

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Abstract Ultra-high molecular weight polyethylene (UHMWPE) has remarkable properties in the bulk state and has substantial potential for use as a protective coating on metals. However, the molecular architecture responsible for these exceptional properties also causes difficulties in the formation of coatings by flame spraying. This paper studies two UHMWPE materials with molecular weights of 2 million and 6 million. The flow of splats for each UHMWPE and blends of selected polyethylenes were characterized and a model developed for the flow of these polymers with respect to polymer composition, viscosity and thermal spray parameters. The model was applied to the polyethylene system and the experimental results show that controlling the composition and the process parameters is essential for the deposition of high-quality coatings.
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3

Liu, Y. H., and D. A. Zumbrunnen. "Toughness Enhancement in Blends of Dissimilar Polymers Due to the In-Situ Formation by Chaotic Mixing of Fine-Scale Extended Structures at Low Minor Phase Concentrations." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0677.

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Abstract Experimental results are presented to demonstrate that significant improvements to the impact properties of a polystyrene (PS) matrix can be achieved by the addition of only 9% by volume of low density polyethylene (LDPE). Polymer blends of LDPE and PS were combined in the molten state within a cylindrical cavity where a quiescent, three-dimensional chaotic mixing process was performed. Whereas a minor phase normally adopts the form of highly distributed droplets in conventional processing techniques, minor phase bodies were stretched and folded recursively to yield fine-scale extended and interconnected structures. The structures were largely preserved upon solidification. Impact tests were carried out on specimens which were machined from the solidified blend. Fracture surfaces of the impact test specimens were examined by scanning electron microscopy. Blends achieved a maximum impact toughness 69% higher than that of PS. Results demonstrate potential improvements in properties that may be obtained if favorable and unique microstructures are formed directly in the melt during processing, even when major and minor phases are dissimilar.
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4

Rizvi, Ali, and Chul B. Park. "Processing/Structure/Properties Relationships in Polymer Blends for the Development of Functional Polymer Foams." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50288.

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In this study we present a comprehensive experimental investigation of the effect of polymer blending on the dispersed phase morphology and how the dispersed phase morphology influences the foaming behavior of the semicrystalline polymer matrix using three different material combinations: polyethylene (PE)/polypropylene (PP), PP/polyethylene terephthalate (PET) and PP/polytetrafluoroethylene (PTFE). Samples are prepared such that the dispersed phase domains exhibit either spherical or fibrillated morphologies. Measurements of the uniaxial extensional viscosity, linear viscoelastic properties and crystallization kinetics under ambient pressures and elevated pressures of carbon dioxide (CO2) are performed and the morphological features are identified with the aid of SEM. Batch foaming and lab-scale extrusion foaming experiments are performed, as a screening model for polymer processing, to show the enhancement of the foaming ability as a result of the blend morphology, taking into account the rheological behaviour and the effects of crystallization kinetics. The formation of high aspect ratio fibrils imparts unique characteristics to the semicrystalline matrix such as strain-hardening in uniaxial extensional flow, prolonged relaxation times, pronounced elastic properties and enhanced kinetics of crystallization. In contrast, the regular blends containing spherical dispersed phase domains do not exhibit such properties. Foam processing of the three blends reveals a marked broadening of the foaming window when the dispersed phase domains are fibrillated due to the concurrent increase in crystallization kinetics, improved elastic properties and strain hardening in extensional flow.
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Gherbaz, G., and A. S. Vaughan. "Polymer blend and nucleating agent: on structural evolution and space charge on polyethylene (PE) blends and Dibenzylidene Sorbitol." In 2007 IEEE International Conference on Solid Dielectrics. IEEE, 2007. http://dx.doi.org/10.1109/icsd.2007.4290867.

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Podzorova, M. V., Yu V. Tertyshnaya, P. V. Pantyukhov, S. G. Karpova, A. A. Popov, and S. G. Nikolaeva. "Photodegradation of films based on polylactide-polyethylene blends." In PROCEEDINGS OF THE ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES. Author(s), 2018. http://dx.doi.org/10.1063/1.5083484.

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Das, Shankar Swarup, and Prasun Chakraborti. "Tribological performance of high density polyethylene – Hydroxyapatite blends." In PROCEEDINGS OF ADVANCED MATERIAL, ENGINEERING & TECHNOLOGY. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0024368.

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Jiang, Chen, Yaxin Hou, Jingzhe Yu, Zuojun Wei, Xiangrong Chen, and Hao Zhou. "Electrical treeing of polyethylene blends with/without voltage stabilizer." In 2018 12th International Conference on the Properties and Applications of Dielectric Materials (ICPADM). IEEE, 2018. http://dx.doi.org/10.1109/icpadm.2018.8401261.

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Passiniemi, P., and K. Vakiparta. "Characterization of polyaniline - polyethylene blends with AC impedance measurements." In International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.834826.

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Helal, Emna, Nicole R. Demarquette, Eric David, and Michel F. Frechette. "Polyethylene/styrenic block copolymer blends: Morphology and dielectric properties." In 2014 IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP 2014). IEEE, 2014. http://dx.doi.org/10.1109/ceidp.2014.6995902.

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Звіти організацій з теми "Polyethylends blends"

1

Wignall, G. D., J. D. Londono, R. G. Alamo, and L. Mandelkern. The morphology of blends of linear and branched polyethylenes in solid state by SANS. Office of Scientific and Technical Information (OSTI), March 1995. http://dx.doi.org/10.2172/34328.

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2

Wignall, G. D., J. D. Londono, R. G. Alamo, L. Mandelkern, and F. C. Stehling. The morphology of blends of linear and branched polyethylenes in solid state by SANS. Office of Scientific and Technical Information (OSTI), December 1994. http://dx.doi.org/10.2172/225976.

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3

Braegelmann, Peter. Printability and Mechanical Properties of Polyethylene and Polyethylene/Nylon Blend Parts Made by Selective Laser Sintering. Office of Scientific and Technical Information (OSTI), September 2022. http://dx.doi.org/10.2172/1887106.

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