New semicrystalline block copolymers of poly(arylene ether sulfone)s and poly(1,4-cyclohexylenedimethylene terephthalate)

被引：8
作者：
Chang, Zhengmian [1 ]
Fahs, Gregory B. [1 ]
Zhang, Bin [1 ]
Edling, Hans E. [1 ]
Orler, E. Bruce [1 ]
Moore, Robert B. [1 ]
Turner, S. Richard [1 ]
机构：
[1] Virginia Tech, Macromol & Interfaces Inst, Dept Chem, Blacksburg, VA 24061 USA
来源：
POLYMER | 2015年 / 74卷
基金：
美国国家科学基金会;
关键词：
Poly(arylene ether sulfone)s; Segmented block copolymer; Crystallization; AMORPHOUS COPOLYESTERS; SECONDARY RELAXATION; POLY(ETHER SULFONE); 1,4-CYCLOHEXANEDIMETHANOL; GLASSES; KETONE); SERIES;
D O I：
10.1016/j.polymer.2015.08.008
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Multiblock copolymers of poly(arylene ether sulfones) (PAESs) and poly(1,4-cyclohexylenedimethylene terephthalate) (PCT) were synthesized via melt-phase polymerization. PAES oligomers (M-n = 2000 g/mol) were synthesized with hydroxyethoxyl end groups, and then reacted with dimethyl terephthalate (DMT) and 1,4-cyclohexanedimethanol (CHDM) to obtain segmented copolymers with the goal of introducing semi-crystallinity into the PAES segmented block copolymers. Two CHDMs (all trans and cis/trans - 30/70) were used for comparison. Weight percentages of PCT segments varied from 20 wt% to 80 wt%. According to the results measured by DSC, DMA and WAXS, the copolymers crystallized when the content of PCT segment was above 50 wt%, and the crystallinity of the copolymers exhibited a proportional dependence on the weight percentage of PCT segments. Segmented copolymers with trans-CHDM as the polyester segment exhibited a higher level of crystallinity than the 30/70 CHDM mixture. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：86 / 93
页数：8
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