期刊
POLYMER
卷 209, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2020.122940
关键词
Plastic waste; Dissolution; Green recycling process
资金
- National Council for Scientific and Technological Development (CNPq/Brazil)
- Coordination for the Improvement of Higher Education Personnel (CAPES/Brazil) [001]
This study investigated recycling of expanded polystyrene (EPS) waste in a closed-loop design using the dissolution technique. The objective is to dissolve a maximum rate of EPS waste in styrene (its monomer), followed by suspension polymerization of this solution to incorporate the monomer (the solvent) in the polymer chain to avoid the need to separate the polymer and the solvent. The study evaluated the best operating conditions for these procedures, which resulted in 92% g.g(-1) of particles at the appropriate size for expansion (425-1400 mu m). Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC), dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA) were conducted to determine the chemical, thermal and rheological properties of the recycled polymers and to compare them with standard polymer, demonstrating that the recycled material kept its chemical, thermal, and rheological properties. This novel closed-loop technology has strong potential to produce recycled EPS with good properties and, if well established, will allow EPS recycling without the formation of secondary waste, in keeping with the principles of sustainable development and circular economy. A brief analysis of this process revealed a strong reduction in environmental impacts and suggests its economic viability, considering the demand for and market value of EPS and the investment required to produce it in a recycling process that could be amortized in a short period.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据