BIODEGRADABLE FIBERS .1. POLY-L-LACTIC ACID FIBERS PRODUCED BY SOLUTION SPINNING

被引：27

作者：

FAMBRI, L

PEGORETTI, A

MAZZURANA, M

MIGLIARESI, C

机构：

[1] Department of Materials Engineering, University of Trento, Trento, 38050

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE | 1994年 / 5卷 / 9-10期

关键词：

D O I：

10.1007/BF00120355

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Fibres of about 620 000 viscometric molecular weight, M(v), were obtained by a spinning/drawing process using a poly-L-lactic acid/chloroform solution. Mechanical properties of fibres increased with draw ratio (DR) up to tensile modulus and strength of 10 GPa and 1.1 GPa, respectively. Moreover, draw ratio appeared to affect fibre structure and morphology, producing different amounts and types of crystallinity (characterized by two close but well distinct melting peaks, as revealed by DSC) or causing different failure modes in the stressed-up-to-break fibres. As demonstrated by scanning electron microscopy, a microfibrilar structure is developed for draw ratios higher than about 8.

引用

页码：679 / 683

页数：5

共 28 条

[21] STUDY ON THE DRAWING BEHAVIOR OF POLY(L-LACTIDE) TO OBTAIN HIGH-STRENGTH FIBERS [J].