Academic literature on the topic 'Polymers Recycling'

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Journal articles on the topic "Polymers Recycling"

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Yuan, Liyun, and Yong Shen. "A Review of Research on Recyclable Polymer Materials." MATEC Web of Conferences 363 (2022): 01025. http://dx.doi.org/10.1051/matecconf/202236301025.

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Polymer materials have been widely used in applications ranging from aerospace, automobile transportation, medical and health care due to their excellent properties. The current linear production and disposal model of polymeric materials has raised concerns about the continuous consumption of limited fossil fuels and the severe environmental crises. To address the dual challenges of the environment and resources, it is necessary to develop sustainable polymers and more promising recycling strategies. This contribution summarizes the recent research on the preparation of sustainable polymers and their chemical recycling, including polyesters, polycarbonates, polythioesters and polyurethanes.
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Hawkins, W. L. "Recycling of polymers." Conservation & Recycling 10, no. 1 (January 1987): 15–19. http://dx.doi.org/10.1016/0361-3658(87)90003-8.

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Et. al., Balwant Singh,. "Processing and Recycling of thermoplastic polymers: Current Scenario and Future Challenges." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 2 (April 11, 2021): 2744–53. http://dx.doi.org/10.17762/turcomat.v12i2.2303.

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Thermoplastic polymers are extensively utilized in electronics, aerospace, automobile and additive manufacturing industries due to low cost, low temperature processing and reusability. Thermoplastics of different grades and chemical structures arereadily available in the market They can be reusedand reshaped, and also can be manufactured with less weight proportion as compared to the metals and ceramics by providing same strength of material. As a result, the plastics products in the market are getting popular day by day with high demand of customized products due to inception of additive manufacturing technologies. In any case, the issue of recycling these materials is challenge due to enormous energy requirements and varying chemical composition of different polymers. There are both mechanical and financial issues that restrict the advancements in this field. The recycling process of polymers can be done by the four different ways such as primary recycling process, secondary recycling process, tertiary recycling process and quaternary recycling process which can be discussed in this systematic review with practical examples. The modifications and implementation of these polymer waste recycling techniques could help to reduce wastage and save material cost which would directly affect the economy of contemporary industries.
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SANDA, Fumio. "Chemical Recycling of Polymers." Kobunshi 52, no. 4 (2003): 275. http://dx.doi.org/10.1295/kobunshi.52.275.

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Kaminsky, W. "Thermal recycling of polymers." Journal of Analytical and Applied Pyrolysis 8 (April 1985): 439–48. http://dx.doi.org/10.1016/0165-2370(85)80042-5.

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SEMINOG, V. V., and V. D. MYSHAK. "RECYCLING, MODIFICATION AND DEVELOPMENT OF NEW COMPOSITE MATERIALS BASED ON POLYMER WASTE." Polymer journal 44, no. 4 (December 15, 2022): 255–70. http://dx.doi.org/10.15407/polymerj.44.04.255.

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The review article considers the current problem of environmental pollution with polymer waste. To solve one of the highest priority tasks, their recycling is considered, which is advisable from an economic, practical and scientific point of view. An assessment of the resources of secondary polymeric raw materials was made. The main ways of utilization of polymeric waste are given. The features of polymer waste recycling methods are determined. The issues of modification of polymer wastes are considered and the main methods of compatibilization of polymer mixtures are shown. Particular attention is paid to the methods and mechanisms of compatibilization of polymer composites based on recycled thermoplastics and crumb rubber from waste tires as a means of obtaining new composite polymer materials with valuable performance properties. The dependence of the properties of polymer composites on the filler concentration, particle size and shape, surface treatment methods, type and content, modifying additives and compatibilizers is shown. The creation of polymer composites based on secondary polymers and fillers of various nature contributes to the solution of social and economic problems of polymer waste.
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Harmsen, Paulien, Michiel Scheffer, and Harriette Bos. "Textiles for Circular Fashion: The Logic behind Recycling Options." Sustainability 13, no. 17 (August 30, 2021): 9714. http://dx.doi.org/10.3390/su13179714.

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For the textile industry to become sustainable, knowledge of the origin and production of resources is an important theme. It is expected that recycled feedstock will form a significant part of future resources to be used. Textile recycling (especially post-consumer waste) is still in its infancy and will be a major challenge in the coming years. Three fundamental problems hamper a better understanding of the developments on textile recycling: the current classification of textile fibres (natural or manufactured) does not support textile recycling, there is no standard definition of textile recycling technologies, and there is a lack of clear communication about the technological progress (by industry and brands) and benefits of textile recycling from a consumer perspective. This may hamper the much-needed further development of textile recycling. This paper presents a new fibre classification based on chemical groups and bonds that form the backbone of the polymers of which the fibres are made and that impart characteristic properties to the fibres. In addition, a new classification of textile recycling was designed based on the polymer structure of the fibres. These methods make it possible to unravel the logic and preferred recycling routes for different fibres, thereby facilitating communication on recycling. We concluded that there are good recycling options for mono-material streams within the cellulose, polyamide and polyester groups. For blended textiles, the perspective is promising for fibre blends within a single polymer group, while combinations of different polymers may pose problems in recycling.
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Paladiichuk, Yuriy, and Inna Telyatnuk. "JUSTIFICATION OF METHODS OF POLYMERIC WASTE PROCESSING IN AGRICULTURAL PRODUCTION." ENGINEERING, ENERGY, TRANSPORT AIC, no. 4(115) (December 24, 2021): 97–108. http://dx.doi.org/10.37128/2520-6168-2021-4-11.

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The development of industry has led to the unlimited technological application of polymers, ranging from plastic bags, rubber, fabrics, paper and other materials. Displacing traditional materials, polymer products began to be used in agriculture. Polymers are used to make films for soil cover (mulching), anti-hail nets, shaft bushings, gears, body parts, tanks for storage and transportation of fertilizers and working fluids and many other parts. The operational properties of polymer products are becoming more and more perfect, but at the same time the methods of polymer waste management and their utilization are being developed and complicated. Over time, they can no longer be used for their intended purpose, so they are discarded and sent to landfills, while polymers are valuable structural materials and their reuse will not only be positive for the environment, but can also become a profitable branch of the agro-industrial complex. Pellet production is one of the methods of recycling polymer waste, which in the future can be used for the production of new parts, as well as added to the composition of composite materials based on organic or mineral fillers. This article examines the problem of recycling polymer waste by improving their processing technologies. The analysis of existing methods of utilization and processing of polymeric waste generated in agriculture is carried out. Determination of physical and mechanical properties of polymer waste, in particular thermoplastics. Taking into account the received information, conclusions are made and the analysis of methods of utilization and processing of polymeric waste in secondary raw materials is carried out.
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Hadi, Jasim, Faisal Najmuldeen, and Iqbal Ahmed. "Quality restoration of waste polyolefin plastic material through the dissolution-reprecipitation technique." Chemical Industry and Chemical Engineering Quarterly 20, no. 2 (2014): 163–70. http://dx.doi.org/10.2298/ciceq120526119h.

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This study examines the restoration of waste plastic polymers based on LDPE, HDPE or PP through dissolution/reprecipitation. Experimental conditions of the recycling process, including type of solvent/non-solvent, original polymer concentration and dissolution temperature were optimized. Results revealed that by using the different prepared solvents/non-solvents at various ratios and temperatures, the polymer recovery was always greater than 94%. The FTIR spectra and the thermal properties (melting point and crystallinity) of the polymers before and after recycling were measured using Differential Scanning Calorimetry (DSC). Mechanical properties of the waste polymer before and after recycling were also measured. Besides small occasional deviations, the properties did not change. The tensile strength at maximum load was 7.1, 18.8, and 7.4 MPa for the recycled LDPE, HDPE and PP, respectively and 7.78, 18.54 and 7.86 MPa for the virgin polymer. For the waste, the strength was 6.2, 15.58 and 6.76 MPa.
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Sikorska, Wanda, Marta Musioł, Barbara Zawidlak-Węgrzyńska, and Joanna Rydz. "End-of-Life Options for (Bio)degradable Polymers in the Circular Economy." Advances in Polymer Technology 2021 (April 10, 2021): 1–18. http://dx.doi.org/10.1155/2021/6695140.

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End-of-life options for plastics include recycling and energy recovery (incineration). Taking into account the polymeric waste, recycling is the intentional action that is aimed at reducing the amount of waste deposited in landfills by industrial use of this waste to obtain raw materials and energy. The incineration of waste leads to recovery of the energy only. Recycling methods divide on mechanical (reuse of waste as a full-valuable raw material for further processing), chemical (feedstock recycling), and organic (composting and anaerobic digestion). The type of recycling is selected in terms of the polymeric material, origin of the waste, possible toxicity of the waste, and its flammability. The (bio)degradable polymers show the suitability for every recycling methods. But recycling method should be used in such a form that it is economically justified in a given case. Organic recycling in a circular economy is considered to be the most appropriate technology for the disposal of compostable waste. It is addressed for plastics capable for industrial composting such as cellulose films, starch blends, and polyesters. The biological treatment of organic waste leads also to a decrease of landfills and thereby reducing methane emissions from them. If we add to their biodegradability the absence of toxicity, we have a biotechnological product of great industrial interest. The paper presents the overview on end-of-life options useful for the (bio)degradable polymers. The principles of the circular economy and its today development were also discussed.
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Dissertations / Theses on the topic "Polymers Recycling"

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Guo, Haochen. "RECYCLING THERMOPLASTIC EVA (POLYETHYLENE-CO-VINYL ACETATE) WITH IMPROVED PROPERTIES." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1585673886043802.

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Parpart, Dawn Allison. "PET/nylon 66 polymer blends and carpet recycling." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/9139.

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Wong, Joseph Man 1959. "A nonplugging annulus control valve for extrusion of polymers and slurries." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/276855.

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An annular control valve was developed for the extrusion of wood slurries and polymers. The objective was to determine the optimal valve geometry: (1) to provide a linear pressure drop across the valve as a function of valve opening and (2) to eliminate the problem of valve plugging caused by the high solid content of the wood slurries. The approach was to model the non-Newtonian flow in a plasticating single-screw extruder. A finite-difference scheme was developed to model the flow through annular surfaces. The two flow equations were solved simultaneously and a parametric study was performed to determine the optimal valve geometry. The valve operability was evaluated for the extrusion of various mixtures of low-density polyethylene, sawdust, wood flour, and vacuum bottom. The experimental results were in good agreement with the model. In general, a linear valve characteristic was observed and the problem of valve plugging was not evident.
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Ruiz, Ilza Aparecida dos Santos. "Adição de EPDM ou anidrido maléico na blenda LDPE/PA6 e suas propriedades finais." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-11052009-133033/.

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Em virtude do crescente volume da utilização de embalagens multicamadas na preservação de alimentos, torna-se necessário o estudo visando a reciclagem desses materiais através de seu reaproveitamento como matéria-prima e a transformação em novos produtos ou materiais. Dentre os vários tipos de reciclagem utilizados atualmente, a formação de blendas poliméricas com material descartado apresenta-se como uma alternativa viável, pois se trata de uma atividade moderna que une o desenvolvimento tecnológico e a preservação ambiental. O presente trabalho faz um estudo sobre a reciclagem de resíduos de embalagens multicamadas pós-consumo no setor alimentício para a formação de uma blenda. O filme multicamada composto por poliamida 6 e polietileno de baixa densidade foi previamente moído para obtenção de flocos e a ele foi adicionado primeiramente o aditivo etileno-propileno-dieno monômero e em seguida foi feito uma nova mistura composta apenas de anidrido maléico com filme multicamada na forma de flocos, no intuito de melhorar as propriedades mecânicas das blendas formadas pelo processo da extrusão. Para a verificação dos resultados obtidos foram realizados testes de tração, alongamento e permeabilidade ao gás oxigênio no filme de poliamida 6 e polietileno, e ensaios mecânicos, análises térmicas e microscopia eletrônica de varredura nas blendas obtidas. Também se estudou o efeito da radiação (100 kGy) sobre as propriedades das blendas utilizando-se um acelerador de elétrons.
In virtue of the increasing volume of the multilayers packings use in the food preservation, the study for the recycling of these materials through its reverse speed-exploitation as raw material and the transformation in new products or materials becomes necessary. Amongst some types of recycling used currently, the polymers blendes formation with discarded material is presented as a viable alternative, therefore if it deals with a modern activity that joins the technological development and the ambient preservation. The present research, therefore makes a study on the recycling of residues from multilayers packings after-consumes in the nourishing sector for the blend formation. The multilayer film composed by polyamide 6 and polyethylene of low density was previously worn out for flake attainment and it was added first the Ethylene-Propylene-Diene-Monomer (EPDM) additive and after that a new composed maleic anhydride mixture was made only with multilayer film in the flake form, in intention to improve the mechanical properties of blendes formed for the process of the drawing. For verification of the results assays had been carried through traction tests, rupture lengthening tests and permeability to the gas oxygen in the film of polyamide 6 and mechanical properties of blendes formed for the process of the drawing. For verification of the results assays had been carried through traction tests, rupture lengthening tests and permeability to the gas oxygen in the film of polyamide 6 and mechanical polyethylene, and assays, thermal analyses and scanning electronic microscopy in the blendes. It was also studied radiation dose (100 kGy) on the blends properties using an electron beam accelerator.
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Granowski, Gregory A. "Recycling of PVC and XLPE for High Impact Resistance in Spool Development." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1157640/.

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My work focuses on taking waste wire-grade PVC = poly(vinyl chloride) and waste XLPE = cross-linked polyethylene and recycle them into small wire/cable spool technology in order to reduce waste cost and reduce cost of spool production. The PVC and XLPE were provided by Encore Wire Corp. of McKinney, TX; they have also defined the standard to which I am comparing my results. The end goal is to incorporate as much PVC and XLPE into the spools while maintaining material toughness, impact resistance, as well as cost-effectiveness in the implementation of the waste materials. The work has been divided into two primary sections, the first is focused on improving material strength through the addition of ceramic fillers. The second section is focused on adding PVC and XLPE into a stronger and highly cohesive polymer matrix and optimizing the concentration of the waste products. Since XLPE is non-polar while PVC is strongly polar, compatibilizers such as CPE (chlorinated polyethylene) and MA-DCP (maleic anhydride with dicumyl peroxide) were used to improve interactions between polar and non-polar constituents. Testing involved the tensile mechanical properties, tribology and thermal properties, namely dynamic mechanical analysis (DMA) and evaluation of thermal degradation by thermogravimetric analysis (TGA). Combining PVC and XLPE together is not economically feasible with current compatiblizers. At the same time, introduction of PVC waste or XLPE waste with sufficient properties of the resulting composites is doable.
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Mohammadzadeh, Maryam. "Characterization of recycled thermoplastic polymers." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-19650.

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In this study thermal and mechanical properties and chemical structure of four differentpolymers (PE, PP, polyASA and PVC) were investigated to find out if the recycled polymershad the same properties and can be used in the same applications as the virgins or not.FT-IR was used for investigation of chemical structure. TGA, DSC and thermal stability wereused to compare the thermal properties. Tensile test also used to examine the mechanicalproperties.All the tests showed the recycling process is not done completely well. The differences inresults for virgins and recycled samples are the reasons which verified this claim.The results obtained from this study clarifying that the amount of stabilizer in the recycledpolymers were considerably less than the amount in virgins, means that the company had notadded enough stabilizer during the recycling process.
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Wei, Ren, and Wolfgang Zimmermann. "Biocatalysis as a green route for recycling the recalcitrant plastic polyethylene terephthalate." Universität Leipzig, 2017. https://ul.qucosa.de/id/qucosa%3A21102.

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SOUZA, ELISEU W. de. "Estudo para fabricacao de refletores automobilisticos utilizando um material composito termofixo de um material termoplastico." reponame:Repositório Institucional do IPEN, 2010. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9602.

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Dissertacao (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Sommer, William J. "Supported catalysts, from polymers to gold nanoparticles supports." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-07062007-225935/.

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Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2008.
Christoph J. Fahrni, Committee Member ; Mostapha A. El-Sayed, Committee Member ; Christopher W. Jones, Committee Member ; Marcus Weck, Committee Chair ; E. Kent Barefield, Committee Member.
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ROSSINI, EDVALDO L. "Obtencao da blenda polimerica PET/PP/PE/EVA a partir de 'garrafas PET' e estudo das modificacoes provocadas pela radiacao ionizante." reponame:Repositório Institucional do IPEN, 2005. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11373.

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Tese (Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Books on the topic "Polymers Recycling"

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Francis, Raju, ed. Recycling of Polymers. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527689002.

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Koszkul, Józef. Stosowanie i przetwórstwo materiałów polimerowych. Częstochowa: Wydawn. Politechniki Częstochowskiej, 1998.

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Güneri, Akovalı, and NATO Advanced Study Institute on Frontiers in the Science and Technology of Polymer Recycling (1997 : Antalya, Turkey), eds. Frontiers in the science and technology of polymer recycling. Dordrecht: Kluwer Academic, 1998.

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Conroy, Amanda. Recycling fibre reinforced polymers in the construction industry. Watford: CRC, 2004.

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Szczecin, Poland) Central European Conference "Recycling of Polymer Materials" (1st 2001. 1st Central European Conference "Recycling of Polymer Materials" : science--industry = I Środkowoeuropejska Konferencja "Recykling Materiałów Polimerowych": Nauka--przemysł, Politechnika Szczecińska, listopad, 2001. Szczecin: Wydawn. Uczelniane Politechniki Szczecińskiej, 2001.

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Recycling and reuse of materials and their products. Toronto: Apple Academic, 2013.

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Zinowicz, Zygmunt. Technologiczne problemy zagospodarowania odpadów tworzyw polimerowych. Lublin: Wydawnictwo Politechniki Lubelskiej, 2003.

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International Seminar on Modern Polymeric Materials for Environmental Applications (4th 2010 Kraków, Poland). Modern polymeric materials for environmental applications: 4th International Seminar, Krakow, 1-3 Dec. 2010 including COST MP 0701 Workshop "Environmental Impact of Polymer Nanocomposites-from preparation to recycling". Kraków: Wydawn. Naukowo-Techniczne TEZA, 2010.

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International Seminar on Modern Polymeric Materials for Environmental Applications (4th 2010 Kraków, Poland). Modern polymeric materials for environmental applications: 4th International Seminar, Krakow, 1-3 Dec. 2010 including COST MP 0701 Workshop "Environmental Impact of Polymer Nanocomposites-from preparation to recycling". Kraków: Wydawn. Naukowo-Techniczne TEZA, 2010.

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Convegno-Scuola AIM (29th 2008 Gargnano, Italy). XXIX Convegno-Scuola AIM "Mario Farina" su cicli di vita dei materiali polimerici. Ospedaletto (Pisa): Pacini, 2008.

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Book chapters on the topic "Polymers Recycling"

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Brandrup, Johannes, and Wiesbaden. "Polymers, Polymer Recycling, and Sustainability." In Plastics and the Environment, 521–62. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2004. http://dx.doi.org/10.1002/0471721557.ch13.

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Gooch, Jan W. "Recycling." In Encyclopedic Dictionary of Polymers, 612. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_9813.

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Gooch, Jan W. "Plastics, Recycling." In Encyclopedic Dictionary of Polymers, 543. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_8836.

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Sethi, Beena. "Methods of Recycling." In Recycling of Polymers, 55–114. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527689002.ch3.

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Balakrishnan, Preetha, and Meyyappallil Sadasivan Sreekala. "Recycling of Plastics." In Recycling of Polymers, 115–39. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527689002.ch4.

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Swapna, Valiya Parambath, and Ranimol Stephen. "Recycling of Rubber." In Recycling of Polymers, 141–61. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527689002.ch5.

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Francis, Raju, Geethy P. Gopalan, and Anjaly Sivadas. "Introduction." In Recycling of Polymers, 1–10. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527689002.ch1.

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Vishnu Sankar, Sivasankarapillai, and Sivasankarapillai Anil Kumar. "Common Additives used in Recycling of Polymers." In Recycling of Polymers, 11–53. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527689002.ch2.

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Francis, Raju, Nidhin Joy, Anjaly Sivadas, and Geethy P. Gopalan. "Fibers." In Recycling of Polymers, 163–208. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527689002.ch6.

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Sunny, Jyothi V. "Recycling of Polymer Blends and Composites (Epoxy Blends)." In Recycling of Polymers, 209–22. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527689002.ch7.

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Conference papers on the topic "Polymers Recycling"

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Morgan, Roy E., and John D. Weaver. "Recycling RIM Thermoset Polymers." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1991. http://dx.doi.org/10.4271/910580.

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Kresta, Jiri E., Han X. Xiao, Igor Cejpek, and Jan Kytner. "Recycling of Thermoset Polymers." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1995. http://dx.doi.org/10.4271/950835.

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Volkododova, Elena Viktorovna, and Tatyana Eduardovna Markova. "FEATURES OF BUSINESS OF SMALL AND MEDIUM ENTERPRISES IN THE SECONDARY POLYMERIC MATERIALS MARKET." In Russian science: actual researches and developments. Samara State University of Economics, 2020. http://dx.doi.org/10.46554/russian.science-2020.03-1-729/736.

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The article is devoted to the problem of managing small and medium-sized enterprises in the secondary polymer market. The features of the secondary polymers market and the organization of a business for the production of secondary polymeric wastes are investigated. The business processes of recycling waste within the technological chain of secondary polymers production are analyzed. The problems of the activity of small and medium enterprises in the market of secondary polymers and the directions of their solution are formulated.
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AlMaadeed, Mariam, Alma Hodzic, Nabil Madi, Igor Krupa, and Nesibe Ozerkan. "Recycling Polymers in Qatar, Advantages and Obstacles." In Qatar Foundation Annual Research Forum. Hamad bin Khalifa University Press (HBKU Press), 2011. http://dx.doi.org/10.5339/qfarf.2011.ev04.

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Morgan, Roy E., Lydia Nemedy, Susan G. Yester, Douglas Peterson, and Brad Armstrong. "Recycling RIM Thermoset Polymers into Automotive Fascia." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1994. http://dx.doi.org/10.4271/940169.

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6

Constantinescu, Doina, Bogdan Boata, Mihaela Iordache, Maria Daniela Stelescu, Mihai Georgescu, and Maria Sönmez. "Technological Considerations Regarding the Mechanical Recycling of Waste from Polyethylene and Polypropylene Packaging." In The 9th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2022. http://dx.doi.org/10.24264/icams-2022.iv.3.

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Abstract:
Plastic materials have found applications in almost all fields as a result of their properties and low price. More than 30% of the production of plastics is intended for obtaining packaging. Since they are non-biodegradable and represent a hazard to the environment, strategies and directives have been adopted at national, European, and global level, regarding the recycling of packaging waste. The main ecological method of recycling them is mechanical recycling. The paper presents the main stages of an industrial mechanical recycling process, namely: collection, sorting, grinding, washing, drying, (purification), granulation, packaging, storage and marketing. This underlines the fact that in order to obtain high-performance PE or PP raw materials from recyclable polymer waste from packaging, the recycling process requires advanced sorting to separate them into polymer classes, because the mixtures of the polymers involved are incompatible in their melted state. This incompatibility leads to the lower processability and physical-mechanical performance of the products manufactured from these types of recycled polymer waste. In addition to the sorting methods currently used in the industry, new advanced methods of selective sorting of waste according to the type of polymer were also presented, such as: spectroscopic method, selective dissolution of polymers, thermal adhesion method, froth flotation method, electrostatic separation methods. It was emphasized that by using state-of-the-art technologies such as electron beam treatment followed by the electrostatic separation of waste mixtures from packaging, it is possible to obtain recycled polymers with high purity (90-97%) at advantageous production costs.
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Shuaib, Norshah A., and Paul T. Mativenga. "Energy Intensity and Quality of Recyclate in Composite Recycling." In ASME 2015 International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/msec2015-9387.

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Composite materials are widely used in various sectors such as aerospace, wind energy and automotive. The high demand especially for thermoset based glass (GFRP) and carbon fibre reinforced polymer (CFRP) composite materials has led to a rise in volumes of manufacturing scrap and end-of-life products as composite waste. Unlike thermoplastic polymers, thermoset polymers have difficulties in recycling due to their cross-linked nature. In this paper, thermoset composite recycling processes which are grouped into mechanical, thermal and chemical methods are assessed from the perspectives of energy consumption, processing rate and mechanical performance of the recycled products. The paper presents a benchmark of composite technologies as well as identifies research challenges.
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Gallmeyer, William W., Claudia M. Duranceau, Ronald L. Williams, and Gerald R. Winslow. "USCAR U.S. Field Trial for Automotive Polymers Recycling." In SAE 2003 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2003. http://dx.doi.org/10.4271/2003-01-0645.

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Cristina, Annesini Maria, Augelletti Rosaria, Frattari Sara, and Gironi Fausto. "PLA recycling by hydrolysis at high temperature." In VIII INTERNATIONAL CONFERENCE ON “TIMES OF POLYMERS AND COMPOSITES”: From Aerospace to Nanotechnology. Author(s), 2016. http://dx.doi.org/10.1063/1.4949585.

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El-Sabbagh, Salwa H., Ola A. Mohamed, A. D’Amore, Domenico Acierno, and Luigi Grassia. "Recycling of Chrome Tanned Leather Dust in Acrylonitrile Butadiene Rubber." In V INTERNATIONAL CONFERENCE ON TIMES OF POLYMERS (TOP) AND COMPOSITES. AIP, 2010. http://dx.doi.org/10.1063/1.3455596.

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Reports on the topic "Polymers Recycling"

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Sara L Rolfe, PI, Nicolas Meier, and Alana Rolfe. Microwave Assisted Gasification for Recycling Polymer Matrix Composites. Office of Scientific and Technical Information (OSTI), April 2011. http://dx.doi.org/10.2172/940306.

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2

Carl Irwin, Rakesh Gupta, Richard Turton, GangaRao Hota, Cyril Logar, Tom Ponzurick, Buddy Graham, Walter Alcorn, and Jeff Tucker. Research, Commercialization, & Workforce Development in the Polymer/Electronics Recycling Industry. Office of Scientific and Technical Information (OSTI), February 2006. http://dx.doi.org/10.2172/887115.

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3

Mel Croucher, Rakesh Gupta, Hota GangaRao, Darran Cairns, Jinzing Wang, Xiaodong Shi, Jason Linnell, Karen Facemyer, Doug Ritchie, and Jeff Tucker. Continuation of Research, Commercialization, and Workforce Development in the Polymer/Electronics Recycling Industry. Office of Scientific and Technical Information (OSTI), September 2009. http://dx.doi.org/10.2172/986587.

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4

Feuchter, Michael, and Katharina Resch. IEA-SHC Task 39 INFO Sheet A7 - Polymeric solar collectors and recycling. IEA Solar Heating and Cooling Programme, May 2015. http://dx.doi.org/10.18777/ieashc-task39-2015-0024.

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