Comparison of Different Extrusion Processes for Cleaning the Recycled Polypropylene Removing Volatile and Non-Volatile Contaminants

Author:

Garcia Pamela Sierra1,Cruz Sandra Andrea1,Nerín Cristina2

Affiliation:

1. Center of Engineering, Modeling and Applied Social Sciences (CECS), Universidade Federal do ABC (UFABC), Santa Adelia 166, 09210-170 Santo André, Brazil

2. Analytical Chemistry Department, GUIA Group, I3A, CPS, University of Zaragoza, Ma de Luna 3, 50018 Zaragoza, Spain

Abstract

Many studies have been carried out in order to enable the use of recycled polymers in food packaging. The main problem is the presence of residual contaminants in recycled plastic, because it could pose a risk to public health when in contact with food. Our purpose is to evaluate different types of mechanical recycling in order to decontaminate the polypropylene. Firstly, pellets of polypropylene were contaminated, following the protocol recommended by the FDA. The pellets were subsequently recovered (washed and dried) and the samples were submitted to different extrusion processes. In order to evaluate the decontamination degree of the samples that went through each type of mechanical recycling, extractability tests were performed under different conditions of time, temperature and using different food simulants. The surrogates that migrated (suffered forced migration) were quantified using chromatographic techniques. The results showed that the decontamination degree of the samples changed with the different methods of extrusion applied. They also showed that conditions of time, temperature and different food simulants actually influenced the extraction of the surrogates.

Publisher

SAGE Publications

Subject

Materials Chemistry,Polymers and Plastics,Organic Chemistry,General Chemical Engineering

Reference36 articles.

Cited by 10 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3