alexa The Influence of Gamma Irradiation on Repeated Recycling and Accelerated Acrylonitrile Butadiene Styrene Terpolymer Aging | OMICS International | Abstract
E-ISSN: 2252-5211

International Journal of Waste Resources
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Research Article

The Influence of Gamma Irradiation on Repeated Recycling and Accelerated Acrylonitrile Butadiene Styrene Terpolymer Aging

Sandra Tostar1*, Erik Stenvall2, Antal Boldizar2 and Mark R StJ

1Department of Industrial Materials Recycling, Chalmers University of Technology, 412 96 Gothenburg, Sweden

2Department of Material and Manufacturing Technology, Chalmers University of Technology, 412 96 Gothenburg, Sweden

*Corresponding Author:
Sandra Tostar
Department of Industrial Materials Recycling
Chalmers University of Technology
412 96 Gothenburg, Sweden
Tel: +46 076 12 77
E-mail: [email protected]

Received Date June 10, 2014; Accepted Date July 11, 2014; Published DateJuly 20, 2014

Citation: Tostar S, Stenvall E, Boldizar A, Foreman MRStJ (2014) The Influence of Gamma Irradiation on Repeated Recycling and Accelerated Acrylonitrile Butadiene Styrene Terpolymer Aging. Int J Waste Resources 4:152. doi:10.4172/2252-5211.1000152

Copyright: © 2014 Tostar S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Electronic waste also referred to as waste electrical and electronic equipment (WEEE) is the fastest growing waste stream in Europe today. The fast exchange pace of mobile phones, television sets and computers create an important need to develop recycling areas to take care of, reuse and recycle all the materials they contain. One common plastic in WEEE is acrylonitrile butadiene styrene terpolymer (ABS). Repeated recycling of plastic causes it to chemically degrade and one of the unwanted effects is the shortening of the polymer chains. Gamma irradiation is known to be able to crosslink polymers and thus reverse the chain shortening. Therefore, the hypothesis of this study is that gamma irradiation of ABS would have a beneficial effect when recycling plastic. Comparative experiments of gamma irradiation has been done according to two methods: A single gamma irradiation (40 kGy) before the extrusion and aging cycles, and the effect of four 10 kGy doses delivered before each of the re-extrusion steps were completed. The results show that gamma irradiation has an impact on the mechanical and rheological
properties of ABS. The yield stress increased with irradiation doses of 0, 10, 50 and 400 kGy. The viscosity also increased in the test samples with irradiation doses of 0, 10, 100 and 200 kGy. In the multi-recycling and accelerated aging test, there was a significant reduction in stiffness for the gamma irradiated samples after the second out of four cycles which cannot be fully explained.

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