Moisture sorption and transport in polylactide

被引：13

作者：

Cairncross, R. A. ^{[1
]}

Ramaswamy, S.

O'Connor, R.

机构：

[1] Drexel Univ, Philadelphia, PA 19104 USA

[2] Univ Minnesota, St Paul, MN 55108 USA

[3] Natureworks LLC, Minnetonka, MN USA

来源：

INTERNATIONAL POLYMER PROCESSING | 2007年 / 22卷 / 01期

关键词：

D O I：

10.3139/217.0985

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Management of moisture penetration and hydrolytic degradation of polylactide (PLA) is extremely important during manufacturing, shipping, storage, and end-use of PLA products. Crystallinity in PLA was measured with Differential Scanning Calorimetry (DSC) and X-Ray Diffraction (XRD). Moisture sorption isotherms in. PLA films were measured with Quartz Crystal Microbalance (QCM) and Dynamic Vapor Sorption (DVS) experiments with samples of varying crystallinity. A surprising result is that crystalline and amorphous PLA films exhibit nearly identical sorption isotherms, within the accuracy of the experiments. The effect of hydrophobicity of PLA end groups on degradation was evaluated by synthesizing PLA with hydrophobic and hydrophilic end groups.

引用

页码：33 / 37

页数：5

共 18 条

[1] Effect of water on the oxygen barrier properties of poly(ethylene terephthalate) and polylactide films [J].