Synthesis and properties of novel biobased poly(hexamethylene 2,5-furandicarboxylate)-b-poly(diethylene glycol 2,5-furandicarboxylate) multiblock copolyesters

IF 4.5 2区化学 Q2 POLYMER SCIENCE

Polymer Pub Date : 2024-06-29 DOI:10.1016/j.polymer.2024.127340

Mingkun Chen, Zhiguo Jiang, Zhaobin Qiu

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引用次数: 0

Abstract

Two poly(hexamethylene 2,5-furandicarboxylate)-b-poly(diethylene glycol 2,5-furandicarboxylate) multiblock copolyesters were synthesized using two hydroxyl-terminated poly(hexamethylene 2,5-furandicarboxylate) (PHF-diol) and poly(diethylene glycol 2,5-furandicarboxylate) (PDEGF-diol) prepolymers in the presence of a chain extender hexamethylene diisocyanate. A series of techniques were employed to fully characterize the thermal, mechanical, and crystallization properties of the obtained multiblock copolyesters. ¹H NMR results confirmed the expected multiblock structures. The combination of the two segments significantly improved the elongation at break of PHF without sacrificing the tensile strength. Moreover, the melt crystallization temperatures and melt points of the multiblock copolyesters only slightly decreased, due to the excellent crystallizability of the PHF segment. In addition, the PDEGF segment significantly influenced the tensile strength and hydrophilicity by forming hydrogen bonds between the adjacent molecular chains.

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新型生物基聚(2,5-呋喃二甲酸六亚甲基酯)-b-聚(2,5-呋喃二甲酸二乙二醇酯)多嵌段共聚物的合成与性能

使用两种羟基端聚六亚甲基 2,5-呋喃二甲酸酯（PHF-diol）和聚二乙二醇 2,5-呋喃二甲酸酯（PDEGF-diol）预聚物合成了两种聚六亚甲基 2,5-呋喃二甲酸酯-b-聚二乙二醇 2,5-呋喃二甲酸酯多嵌段共聚物、5-呋喃二甲酸酯）（PHF-二醇）和聚（二乙二醇 2,5-呋喃二甲酸酯）（PDEGF-二醇）预聚物，在扩链剂六亚甲基二异氰酸酯的存在下合成了多嵌段共聚多酯。我们采用了一系列技术来全面鉴定所获得的多嵌段共聚物的热学、机械和结晶特性。1H NMR 结果证实了预期的多嵌段结构。两个区段的组合大大提高了 PHF 的断裂伸长率，同时不影响拉伸强度。此外，由于 PHF 部分具有优异的结晶性，多嵌段共聚多酯的熔融结晶温度和熔点仅略有下降。此外，PDEGF 部分通过在相邻分子链之间形成氢键，显著影响了拉伸强度和亲水性。

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来源期刊

Polymer 化学-高分子科学

CiteScore

7.90

自引率

8.70%

发文量

959

审稿时长

32 days

期刊介绍： Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.