风化作用
聚合物
降级(电信)
渗滤液
浸出(土壤学)
制浆造纸工业
环境科学
废物管理
聚合
海水
环境化学
材料科学
化学
有机化学
地质学
海洋学
地貌学
工程类
土壤科学
土壤水分
电信
计算机科学
作者
Karen Rodgers,William M. Mayes,Orlando Santoro,Carl Redshaw,Rick. McCumskay,D. Parsons
标识
DOI:10.1016/j.marpolbul.2021.112272
摘要
Bio-based plastics were designed to replace single-use plastics and to cause less post-consumer environmental damage. This paper assesses the weathering of four bio-based polymers created by ring opening polymerization (ROP) promoted by a previously reported Ti-based catalyst, to detect any problems before production was scaled up. Samples were aged in seawater to identify degradation products and monitor structural changes. Surfaces evidenced degradation and a range of leaching products was observed. Aside from compounds used in the preparation of the plastics (i.e. residual monomers and benzyl alcohol), the degradation products included carboxylic acids (often found in plastic leachate), oxacyclohexadecan-2-one (potentially toxic to aquatic life) and triphenylmethane (potential carcinogen). Overall, there were fewer structural changes in the fossil fuel based polymer (PS) and in the commercially available bio-based plastic studied for comparison purposes than the lab based bio-based polymers.
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