Role of cis-1,4-cyclohexanedicarboxylic acid in the regulation of the structure and properties of a poly(butylene adipate-co-butylene 1,4-cyclohexanedicarboxylate) copolymer

被引：24
作者：
Liu, Fei [1 ]
Qiu, Jia [1 ]
Wang, Jinggang [1 ]
Zhang, Junwu [1 ]
Na, Haining [1 ]
Zhu, Jin [1 ]
机构：
[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo Key Lab Polymer Mat, 1219 Zhongguan West Rd, Ningbo 315201, Zhejiang, Peoples R China
来源：
RSC ADVANCES | 2016年 / 6卷 / 70期
基金：
中国国家自然科学基金;
关键词：
MULTIBLOCK POLY(ESTER URETHANE)S; THERMAL-PROPERTIES; CRYSTALLIZATION BEHAVIOR; MOLECULAR-STRUCTURE; THERMOMECHANICAL PROPERTIES; ALIPHATIC COPOLYESTERS; MECHANICAL-BEHAVIOR; DICARBOXYLATE UNITS; LIQUID-CRYSTALLINE; HARD-SEGMENTS;
D O I：
10.1039/c6ra13495e
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A unique non-planar ring structure 1,4-cyclohexanedicarboxylic acid (CHDA) is introduced to synthesize a poly(butylene adipate-co-butylene 1,4-cyclohexanedicarboxylate) (PBAC) copolyester. The impact of the stereochemistry of CHDA on the structure and properties of PBAC, especially the role of cis-CHDA in tuning the thermal, tensile and elastic properties of PBAC is explored in depth. Instead of considering PBAC as a diblock random copolymer consisting of poly(butylene adipate) (PBA) and poly(butylene 1,4-cyclohexanedicarboxylate) (PBC), our results reveal that PBAC can be considered as a random copolymer consisting of actually three blocks, namely PBA, a PBC unit with only trans-CHDA (trans-PBC), and PBC unit with only cis-CHDA (cis-PBC). The role of cis-CHDA is found to be rigid which initiates a high modulus and strength, and soft which results in a decreased melting temperature and increased elongation at break and elasticity.
引用
收藏
页码：65889 / 65897
页数：9
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