GAS TRANSPORT PROPERTIES OF POLY(LACTIC ACID)
Poly(iactic acid) (PLA) is an environmentally friendly and biodegradable polymer substance. Due to the advantages that it offers, including better biological degradation behavior for the bio-recyclable material,PLA is expected to become a replacement material for petroleum-based plastics, such as polyethylene,polyvinylchloride, and poly(ethylene terephthalate).At present, PLA is popularly used in the manufacture of packaging materials (e.g., films, membranes) and foaming materials (e.g., containers).Toward further improvements, it is important to emphasize that the mechanical, thermal, and barrier properties are important in designing these materials.The barrier properties are related to solubility, diff-usivity, and permeability in a polymer.There have been some studies carried out regarding the gas transport properties of oxygen, nitrogen,and carbon dioxide in PLA homopolymers.For this study, however, we focused on PLA blends and systematically investigated its gas transport properties (i.e., permeability, diffusivity, and solubility).
Kazukiyo Nagai
Department of Applied Chemistry,Meiji University 1-1-1 Higashi-mita,Tama-ku,Kawasaki 214-8571,Japan
国际会议
5th International Symposium on High-Tech Polymer Materials(HTPM-V)(第五届国际高技术高分子材料学术会议)
北京
英文
170
2008-10-27（万方平台首次上网日期，不代表论文的发表时间）