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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and Characterization of Poly[(butylene succinate)-co-(butylene terephthalate)-b-poly(tetramethylene glycol) Segmented Block Copolymer
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Synthesis and Characterization of Poly[(butylene succinate)-co-(butylene terephthalate)-b-poly(tetramethylene glycol) Segmented Block Copolymer

机译：聚[（丁二酸丁二酯）-共-（对苯二甲酸丁二酯）-b-聚（丁二醇）嵌段共聚物的合成与表征

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摘要

Polyester-polyether se~ented block copolymers of poly[(butylene succi- nate)-co-poly(butylene terephthalate)] (PBS-PBT) and poly(tetramethylene glycoD (PTMG) (M" = 2000) with various compositions were synthesized. PBT content m the PBS was adjusted to ca. 5 mol %. Their thermal and mechanical properties were investigated. In the case of copolymer, the melting point of the PBS-PBT control was 107.8°C, and the melting point of the copolymer containing 70 wt % of PTMG was 70.1°C. Crystallinity of soft segment was 5 -17%, and that of hard segment was 42 -59%. The breaking stress of the PBS-PTMG control was 47 MPa but it decreased with increasing PTMG content. In the case of copolymer containing 70 wt % of PTMG, breaking stress was 36 MPa. Contrary to the decreasing breaking stress, breaking strain increased from 300% for PBS-PBT control to 900% for a copolymer containing 70 wt% ofPTMG. The shape: recovery ratios of the copolymer containing 70 wt % PTMG were almost twice of those of copolymers containing 40 wt % PTMG.
机译：合成了具有各种组成的聚[[丁二酸丁二酯]-共聚[对苯二甲酸丁二酯]（PBS-PBT）和聚[丁二醇]（PTMG）（M“ = 2000）的聚酯-聚醚嵌段共聚物将PBS中的PBT含量调节至约5mol％，研究其热和机械性能，在共聚物的情况下，PBS-PBT对照的熔点为107.8℃，共聚物的熔点含有PTMG的70 wt％为70.1°C。软链段的结晶度为5 -17％，硬链段的结晶度为42 -59％.PBS-PTMG对照的断裂应力为47 MPa，但随着PTMG的增加而降低在含有70wt％PTMG的共聚物的情况下，断裂应力为36MPa，与减小的断裂应力相反，断裂应变从PBS-PBT对照的300％增加到含有70wt％PTMG的共聚物的900％。含有70 wt％PTMG的共聚物的形状：回收率几乎是共聚体的两倍。包含40 wt％的PTMG。

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