中国塑料2025，Vol.39Issue(4)：20-24,5.DOI:10.19491/j.issn.1001-9278.2025.04.004
包装材料及储存条件对PGA性能的影响研究
Effects of packaging materials and storage conditions on properties of polyglycolic acid
谢瑛鸾 1周炳 1王洪学1
作者信息
- 1. 中石化(上海)石油化工研究院有限公司,上海 201208
- 折叠
摘要
Abstract
Polyglycolic acid(PGA)usually has a high degradation rate,which leads to poor storage stability and short shelf life.In this study,the effects of different packaging materials,atmospheres inside the packages,and storage tem-peratures on the properties of PGA pellets were systematically investigated.The packaging materials evaluated in this work included low density polyethylene(PE-LD)and PE-LD/polyamide internal packaging materials and aluminum/plastic composite external packaging material.Air,nitrogen,and vacuum were used as packaging atmospheres.The storage temperatures were set to be ‒16,5,and 25℃.The melt flow rates,molecular weights and molecular weight dis-tributions,and thermal properties of PGA were assessed after different storage times,and the effect of packaging condi-tions on the degradation of PGA were analyzed.The results indicated that there was an increase in the melt flow rates of PGA with a variation of storage temperature along with a correspondingly decrease in its molecular weight.Both the moistures of the packaging atmospheres and the moisture barrier properties of the packaging materials influenced the deg-radation and properties of PGA.关键词
生物可降解高分子/聚乙醇酸/降解/包装材料/包装条件Key words
biodegradable polymer/polyglycolic acid/degradation/packaging material/packaging condition分类
化学化工引用本文复制引用
谢瑛鸾,周炳,王洪学..包装材料及储存条件对PGA性能的影响研究[J].中国塑料,2025,39(4):20-24,5.
