Processing aids for biodegradable polymers

被引：12

作者：

Jazrawi, Bashar ^{[1
]}

Noroozi, Nazbanoo ^{[1
]}

Ansari, Mahmoud ^{[1
]}

Hatzikiriakos, Savvas G. ^{[1
]}

机构：

[1] Univ British Columbia, Dept Chem & Biol Engn, Vancouver, BC V6T 1Z3, Canada

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2013年 / 128卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

biodegradable; rheology; extrusion; MELT RHEOLOGY; MOLECULAR-WEIGHT; WALL SLIP; EXTRUSION; BEHAVIOR; FRACTURE; SHEAR; FLOW;

D O I：

10.1002/app.38562

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The melt fracture behavior of several commercial polylactides (PLAs) and poly(epsilon-caprolactone) (PCL) is investigated. PLAs and PCL with molecular weights greater than a certain value were found to exhibit melt fracture phenomena in capillary extrusion, which manifests itself as distortions on their surface once the extrusion rate exceeds a critical value. It was found that the addition of a small amount of PCL (typically 0.5 wt %) into the PLA and vice versa is effective in eliminating and delaying the onset of melt fracture to higher shear rates in the capillary extrusion of PLA and PCL, respectively. (c) 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

引用

页码：3592 / 3600

页数：9

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