2A4_0300_ DEVELOPMENT OF A BIOCOMPATIBLE AND BIORESORBABLE YARN FOR TEXTILE SCAFFOLD: EVOLUTION OF MECHANICAL PROPERTIES OF PLA/PCL FIBERS DURING IN VITRO DEGRADATION

Abstract

In this work, bioabsorbable immiscible polymer blends of poly(D,L-lactide) (PLA) and polycaprolactone (PCL) were studied in a large range of compositions, from PLA90PCL10 to PLA50PCL50 per 10% slice in order to evaluate the spinnability of these blends. The first step was a twin screw extrusion followed by a melt spinning step in order to obtain the multifilament. The morphologies of the multifilaments were investigated by extracting PCL with acetic acid. Then multifilaments were immersed in a DMEM media at 50°C during 35 days and their mechanical properties were tested in order to understand the relation between the morphology and the degradation process.