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Poly( para ‐dioxanone)/poly( D , L ‐lactide) blends compatibilized with poly( D , L ‐lactide‐ co ‐ para ‐dioxanone)
Author(s) -
Bai Wei,
Li Qing,
Jiang LiuYun,
Zhang ZhiPing,
Zhang ShenLan,
Xiong ChengDong
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.33197
Subject(s) - materials science , ultimate tensile strength , copolymer , lactide , izod impact strength test , polymer blend , polymer , coprecipitation , composite material , polymer chemistry , chemical engineering , engineering
The effect of poly( D , L ‐lactide‐ co ‐ para ‐dioxanone) (PLADO) as the compatibilizer on the properties of the blend of poly( para ‐dioxanone) (PPDO) and poly( D , L ‐lactide) (PDLLA) has been investigated. The 80/20 PPDO/PDLLA blends containing from 1% to 10% of random copolymer PLADO were prepared by solution coprecipitation. The PLADO component played a very important role in determining morphology, thermal, mechanical, and hydrophilic properties of the blends. Addition of PLADO into the blends could enhance the compatibility between dispersed PDLLA phase and PPDO matrix; the boundary between the two phases became unclear and even the smallest holes were not detected. On the other hand, the position of the T g was composition dependent; when 5% PLADO was added into blend, the T g distance between PPDO and PDLLA was shortened. The blends with various contents of compatibilizer had better mechanical properties compared with simple PPDO/PDLLA binary polymer blend, and such characteristics further improved as adding 5% random copolymers. The maximum observed tensile strength was 29.05 MPa for the compatibilized PPDO/PDLLA blend with 5% PLADO, whereas tensile strength of the uncompatibilized PPDO/PDLLA blend was 14.03 MPa, which was the lowest tensile strength. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011