Open AccessDegradation behaviour in vitro of poly L-lactic acid (PLLA)/polycaprolactone (PCL) masterbatch
Author(s) -
Shu-Qiang Liu,
Kaiwen Wang,
Yaru Yang,
Huimin Li,
Gaihong Wu,
Jiawei Yu,
Mingfang Liu,
Yao Zang,
Peng Wang,
Jie Zhang,
An Bin Xu,
Xiaolong Yin,
Fu Li,
Man Zhang
Publication year - 2020
Publication title -
industria textilă
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.281
H-Index - 14
ISSN - 1222-5347
DOI - 10.35530/it.071.02.1628
Subject(s) - masterbatch , polycaprolactone , degradation (telecommunications) , materials science , crystallization , hydrolytic degradation , hydrolysis , composite number , composite material , chemical engineering , polymer chemistry , chemistry , organic chemistry , polymer , nanocomposite , telecommunications , computer science , engineering
In order to prepare the absorbable medical textile material with different degradation rates, two biopolymers of poly L-lactic acid (PLLA) and polycaprolactone (PCL) with different degradation rates, were mixed in different proportions, and made into PLLA/PCL masterbatch. The experiment of degradation in vitro was conducted to reveal the degradation behaviour of PLLA/PCL masterbatch, and the characteristics of masterbatch in degradation, such as surface morphol- ogy, chemical structure, crystallization, mass loss and strength, were analyzed. The results indicated that the surface of PLLA/PCL masterbatch was etched in degradation, and the larger proportion of PCL, the less etching and slower degra- dation. The ester bonds were hydrolyzed firstly, and the crystallization region in PLLA/PCL masterbatch was destroyed gradually to form a non-crystalline region in degradation. The degradation rate of PLLA in composite masterbatch was faster than that of PCL. With increasing of PCL involved in masterbatch, the mass loss rate of masterbatch in degrada- tion decreased. In addition, the more PCL involved in composite masterbatch, the lower breaking strength.