Nonisothermal Crystallization Kinetics of Poly(butylene adipate-co-terephthalate) Copolyester  

作　　者：Wang Xiaohui Shi Jun Chen Ying Fu Zhifeng Shi Yan 

机构地区：[1]State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology,Beijing 100029 [2]Research Institute of PetroChina Liaoyang Petrochemical Company, Liaoyang 111003

出　　处：《China Petroleum Processing & Petrochemical Technology》2012年第1期74-79,共6页中国炼油与石油化工（英文版）

摘　　要：Nonisothermal crystallization behavior of poly(butylene adipate-co-terephthalate)(PBAT) synthesized via direct esterification and polycondensation reactions was investigated by the differential scanning calorimetry(DSC).The Avrami equation modified by Jeziorny and the Z.S.Mo equation were employed to describe the non-isothermal crystallization kinetics of copolyester samples.The test results showed that the Avrami equation was successful in describing nonisothermal crystallization process of PBAT copolyesters.PBAT copolyester could give birth to secondary crystallization.The crystallization parameter(Zc) increased with an increasing cooling rate and the Avrami exponent(n) was around 2.3.For a given cooling rate,the value of Zc demonstrated a sagging trend with an increase in adipic acid(AA) content.The equation proposed by Z.S.Mo was successful in describing the nonisothermal crystallization kinetics of PBAT copolyesters.Nonisothermal crystallization behavior of poly（butylene adipate-co-terephthalate）（PBAT） synthesized via direct esterification and polycondensation reactions was investigated by the differential scanning calorimetry（DSC）.The Avrami equation modified by Jeziorny and the Z.S.Mo equation were employed to describe the non-isothermal crystallization kinetics of copolyester samples.The test results showed that the Avrami equation was successful in describing nonisothermal crystallization process of PBAT copolyesters.PBAT copolyester could give birth to secondary crystallization.The crystallization parameter（Zc） increased with an increasing cooling rate and the Avrami exponent（n） was around 2.3.For a given cooling rate,the value of Zc demonstrated a sagging trend with an increase in adipic acid（AA） content.The equation proposed by Z.S.Mo was successful in describing the nonisothermal crystallization kinetics of PBAT copolyesters.

关 键 词：nonisothermal crystallization kinetics COPOLYESTER poly（butylene-adipate-co-terephthalate） DSC 

分 类 号：TQ245.12[化学工程—有机化工] O632.12[理学—高分子化学]