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Blends of PVC with EVA from shoe industry

Grant number: 09/13667-8
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): November 01, 2010
Effective date (End): April 30, 2013
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal researcher:Sandro Donnini Mancini
Grantee:Sabrina Moretto Darbello Prestes
Home Institution: Universidade Estadual Paulista (UNESP). Campus Experimental de Sorocaba. Sorocaba , SP, Brazil


The shoe industry generates a elevate amount of waste, being large part of these the poly [(ethylene)-co-(vinyl acetate)] (EVA), a polymer widely used in the form of plates expanded thermosets. The EVA most used by the shoe industry contains around 18-28% content of vinyl acetate and today still there are no appropriates solutions to their destination and recycling. The residue devulcanization is presented as an alternative that may allow its use again as a raw material in the shoe industry. According to the literature, an effective way to improve the properties of PVC, poly (vinyl chloride), is making blends with EVA. However, being thermoset, the shoe industry EVA waste is not suitable for this purpose. The objective of this project is characterize the wastes of EVA from the shoe industry, devulcanize the waste in order to produce a material closer to the virgin one and make possible the manufacture of compatible blends of EVA waste with virgin PVC, enabling its use by shoe industry. (AU)

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Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
PRESTES, Sabrina Moretto Darbello. Reaproveitamento de resíduos de eva reticulado através de reciclagem química. 2013. 159 f. Doctoral Thesis - Universidade Estadual Paulista "Júlio de Mesquita Filho" POSMAT - Programa de Pós-Graduação em Ciência e Tecnologia de Materiais.

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