Influence of nucleating agent on the formation and enzymatic degradation of poly(butylene adipate) polymorphic crystals

被引：48

作者：

Jiang, Ni ^{[1
,3
]}

Zhao, Lifen ^{[2
]}

Gan, Zhihua ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, Key Lab Engn Plast, Beijing 100190, Peoples R China

[2] Shandong Univ Sci & Technol, Coll Mat Sci, Qingdao 266510, Peoples R China

[3] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

来源：

POLYMER DEGRADATION AND STABILITY | 2010年 / 95卷 / 06期

关键词：

Biodegradation; Heterogeneous nucleation; Isothermal crystallization; Polymorphism; Morphology; POLY(TETRAMETHYLENE ADIPATE); CRYSTALLIZATION BEHAVIOR; POLYPROPYLENE; MORPHOLOGY; FILMS;

D O I：

10.1016/j.polymdegradstab.2010.03.004

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effects of nucleating agent multimethyl-benzilidene sorbitol (TM6) on crystallization and morphology of poly(butylene adipate) (PBA) with polymorphic crystal structures were studied by means of differential scanning calorimetry (DSc). wide-angle X-ray diffraction (WAXD) and polarized optical micrographs (POM). In addition to the heterogeneous nucleation, TM6 changes the formation conditions of PBA polymorphic crystals. The addition of TM6 is favorable for the formation of PBA a-form crystals, resulting in the morphological changes from spherulites to interpenetrated fibrils. The influences of TM6 on enzymatic degradation of PBA were studied in terms of the morphological change and weight loss. The results indicate that the a-form crystals induced by TM6 show much slower degradation rate. This work provides an efficient method to control the polymorphic crystal structure and further to regulate the biodegradation rate of polymer materials through modulating the homogeneous and heterogeneous nucleation modes by adding nucleating agents. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1045 / 1053

页数：9

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