Isomorphic crystallization of aliphatic copolyesters derived from 1,6-hexanediol: Effect of the chemical structure of comonorner units on the extent of cocrystallization

被引：40

作者：

Liang, Zhichao ^{[1
]}

Pan, Pengju ^{[1
]}

Zhu, Bo ^{[1
]}

Inoue, Yoshio ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Biomol Engn, Midori Ku, Yokohama, Kanagawa 2268501, Japan

来源：

POLYMER | 2011年 / 52卷 / 12期

关键词：

Aliphatic copolyester; Isomorphism; Extent of cocrystallization; RANDOM COPOLYMERS; ENZYMATIC DEGRADATION; MOLECULAR PACKING; SINGLE-CRYSTALS; ADIPATE); POLY(BETA-HYDROXYBUTYRATE-CO-BETA-HYDROXYVALERATE); POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE); THERMODYNAMICS; MORPHOLOGY; POLYESTERS;

D O I：

10.1016/j.polymer.2011.04.032

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 crystallization behavior has been investigated for poly(hexamethylene sebacate-co-hexamethylene suberate)s [P(HSe-co-HSu)] and poly(hexamethylene suberate-co-hexamethylene adipate)s [P(HSu-co-HA)] copolyesters by differential scanning calorimeter (DSC), wide angle X-ray diffraction (WAXD) and Fourier transform infrared (FTIR) spectrometer. Cocrystallization of comonomer units was found in the crystalline phase of both P(HSe-co-HSu) and P(HSu-co-HA) copolymers. Moreover, both P(HSe-co-HSu) and P(HSu-co-HA) copolymers exhibit isodimorphism. The PHSe and the PHSu type crystals were respectively developed in P(HSe-co-HSu)s, while the PHSu and the PHA type crystals were developed in P(HSu-co-HA)s respectively. The inclusion of the comonomer units in the PHSu type crystalline lattice is more favored than that in the PHSe type crystal of the P(HSe-co-HSu)s. Meanwhile, it is easier for the comonomer units to be incorporated into the PHA type crystalline lattice than into the PHSu type crystal of P(HSu-co-HA)s. Moreover, comparison between the isomorphic crystallization of P(HSe-co-HSu), P(HSe-co-HA) and P(HSu-co-HA) series copolyesters indicates that minimization of the difference in chemical structure helps in increasing the extent of cocrystallization of comonomer units. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2667 / 2676

页数：10

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