Abiotic degradation products from enhanced environmentally degradable polyethylene

摘要: Abiotic degradation products from LDPE with starch + pro-oxidant, only and pure were determined as a step towards establishing resulting environmental degradation. The samples subjected to thermal ageing in water at 95°C for 6 weeks or alternatively pre-heated subsequently immersed aqueous environments ambient temperature 10 months whereafter the phase was analyzed products. Altogether over 50 identified by GC-MS, mainly ketones, alcohols, aldehydes, lactones carboxylic acids, last being most represented. amount of formed different correlated their molecular weight reductions measured SEC but also dependent on permeability sample, i.e. its ability allow diffuse out surrounding environment. addition both pro-oxidant significantly increased susceptibility degradation, while alone gave noticeable smaller increase.