The formation of the S-shaped edge-on lamellae on the thin porous polylactic acid membrane via phase separation induced by water microdroplets

被引：9

作者：

Hu, Ruiqing ^{[1
]}

Pi, Yuping ^{[1
]}

Wang, Na ^{[1
]}

Zhang, Qian ^{[1
]}

Feng, Jinqi ^{[1
]}

Xu, Weilin ^{[1
]}

Dong, Xia ^{[2
]}

Wang, Dujin ^{[2
]}

Yang, Hongjun ^{[1
,2
]}

机构：

[1] Wuhan Text Univ, Coll Mat Sci & Engn, Wuhan 430000, Peoples R China

[2] Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Engn Plast, Inst Chem, Beijing 100190, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2016年 / 133卷 / 17期

关键词：

biomaterials; phase behavior; porous materials; MAIN-CHAIN CHIRALITY; SINGLE-CRYSTALS; CRYSTALLIZATION; POLYURETHANE; MORPHOLOGY; LIQUID; GROWTH; FILMS; FORM;

D O I：

10.1002/app.43355

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Biodegradable polymers have received increased attention due to their potential application in the medicine and food industries; in particular, poly(lactic acid) (PLA) is a primary biopolymer because of its excellent biocompatibility and absorbability features. In this study, a porous PLA membrane was fabricated by phase separation using water microdroplets produced by an ultrasonic atomizer as a coagulation bath. The formation of S-type clusters was attributed to the slow exchange rate between solvent and coagulant, which provided time for the movement of polymer molecules. The effect of preparation conditions on the structure of S-type clusters, including polymer concentration in solution and ambient temperature was investigated. The PLA porous membrane prepared from water micro-droplets with different morphology compared with the sample fabricated from distilled water has potential application in fields of tissue engineering and artificial organ generation. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43355.

引用

页数：6

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