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Improvement of the mechanical properties of poly( D , L ‐lactide) by orientation
Author(s) -
Grijpma Dirk W,
Altpeter Hanno,
Bevis Michael J,
Feijen Jan
Publication year - 2002
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.988
Subject(s) - glass transition , materials science , lactide , amorphous solid , polymer , ultimate tensile strength , injection moulding , composite material , shear (geology) , chemical engineering , polymer chemistry , copolymer , chemistry , organic chemistry , engineering
Abstract Oriented, amorphous poly( D , L ‐lactide) was obtained by drawing injection moulded specimens at temperatures below the glass transition temperature of the polymer and by a non‐conventional injection moulding process in which the melt is cooled under oscillating shear conditions (SCORIM). In both cases effective molecular orientation is achieved, allowing the preparation of degradable devices with much improved tensile properties and impact behaviour when compared to the non‐oriented material. © 2002 Society of Chemical Industry