Crystallization behavior of poly(ethylene terephthalate)/pyrrolidinium ionic liquid

被引：22
|
作者：
Dou, Junyan [1 ]
Liu, Zhengping [1 ]
机构：
[1] Beijing Normal Univ, Coll Chem, Inst Polymer Chem & Phys,Beijing Key Lab Energy C, BNU Key Lab Environm Friendly & Funct Polymer Mat, Beijing 100875, Peoples R China
来源：
POLYMER INTERNATIONAL | 2013年 / 62卷 / 12期
基金：
美国国家科学基金会;
关键词：
ionic liquid; poly(ethylene terephthalate); crystallization; kinetic crystallizability; RIGID AMORPHOUS FRACTION; POLY(ARYL ETHER KETONE); NONISOTHERMAL CRYSTALLIZATION; MELTING BEHAVIOR; SEQUENCE DISTRIBUTION; PHASE-CHANGE; KINETICS; POLY(ETHYLENE-TEREPHTHALATE); MORPHOLOGY; CRYSTALLINITY;
D O I：
10.1002/pi.4470
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Composites of poly(ethylene terephthalate) (PET) with ionic liquid (IL) as matrix were prepared by in situ polycondensation. XRD and DSC were performed to probe crystal structures and determine the crystallization kinetics during crystallization. ILs could serve as nucleating agents in accelerating the crystallization of PET. However, the ability of ILs to induce crystallization is different with variation of IL content. Avrami analysis revealed that the Avrami exponent, n>2, testifies to the existence of three-dimensional spherulitic growth. The kinetic equations (the modified Avrami equation and the combined Avrami and Ozawa equation) are employed to analyze the non-isothermal process. The modified Avrami equation could adequately describe the primary non-isothermal crystallization of PET/IL. The approach of combining the Avrami and Ozawa equations provides a fairly satisfactory description of the non-isothermal crystallization of PET/IL. (c) 2013 Society of Chemical Industry
引用
收藏
页码：1698 / 1710
页数：13
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