Amphiphilic Conetworks and Gels Physically Cross-Linked via Stereocomplexation of Polylactide

被引：34

作者：

Fan, Xiaoshan ^{[1
]}

Wang, Mian ^{[2
]}

Yuan, Du ^{[1
]}

He, Chaobin ^{[1
,3
]}

机构：

[1] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117576, Singapore

[2] Xinxiang Med Univ, Sch Life Sci & Technol, Xinxiang 453003, Peoples R China

[3] Inst Mat Res & Engn, Singapore 117602, Singapore

来源：

LANGMUIR | 2013年 / 29卷 / 46期

关键词：

BIO-BASED POLYMERS; STEREOBLOCK POLYLACTIDES; BLOCK-COPOLYMERS; ORGANIC-SOLVENTS; MODEL CONETWORKS; METHACRYLIC-ACID; CO-NETWORKS; IN-VITRO; HYDROGELS; CRYSTALLIZATION;

D O I：

10.1021/la403432y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Amphiphilic conetworks (APCNs), consisting of hydrophilic poly[poly(ethylene glycol) methyl ester acrylate] (PPEGMEA) and hydrophobic stereocomplex of poly(L-lactide) (PLLA) and poly(D-lactide) (PDLA), were prepared by free radical copolymerization of PEGMEA with acrylate macromonomer of the PLA stereocomplex. The effects of stereocomplexation and the amount of PLA stereocomplex on the rheology properties of APCNs were investigated. The results indicated that the APCNs was stronger in the presence of stereocomplexation compared with the that of nonstereocomplex system, and the strength of the APCNs increased with the increasing of the amount of PLA stereocomplex. The storage modulus of the APCNs could be easily tuned from 1200 to 4300 Pa by incorporating 2-10% of stereocomplex PLA. On the other hand, the swelling behavior of APCNs decreased with the increasing content of hydrophobic PLA cross-linker.

引用

页码：14307 / 14313

页数：7

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