Sustainable Aromatic Copolyesters via Ring Opening Polymerization: Poly(butylene 2,5-furandicarboxylate-co-terephthalate)s
Sustainable Aromatic Copolyesters via Ring Opening Polymerization: Poly(butylene 2,5-furandicarboxylate-co-terephthalate)s
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DOI：
10.1021/acssuschemeng.6b01302
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发表时间：
2016-07
影响因子：
8.4
通讯作者：
Juan Carlos Morales-Huerta;A. M. D. Ilarduya;S. Muñoz-Guerra
中科院分区：
文献类型：
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作者：
Juan Carlos Morales-Huerta;A. M. D. Ilarduya;S. Muñoz-Guerra
采用开环聚合(ROP)法制备了一系列全组成的聚2，5-呋喃甲酸丁二醇酯-对苯二甲酸丁二醇酯共聚酯。采用高稀释缩聚法制备了2，5-呋喃二甲酸丁二醇酯c(BF)n和对苯二甲酸丁二醇酯c(BT)n的环状低聚物，它们主要由二聚体、三聚体和四聚体组成。C(BF)n/c(BT)n混合物的ROP反应时间远短于熔融缩聚反应所需的时间，得到了目标组成和重均相对分子质量在55000~80000 g·mol-1范围内的无规共聚酯。这些共聚酯的热性能与它们的组成一致，并与通过缩聚得到的等组成类似物相当。对组成不同的均聚酯和共聚酯等温结晶的比较动力学研究表明，2，5-呋喃二甲酸酯单元的存在使结晶温度降低。
A series of poly(butylene 2,5-furandicarboxylate-co-terephthalate) copolyesters coPBFxTy covering the whole range of compositions has been prepared via ring opening polymerization (ROP). Cyclic oligomers of butylene 2,5-furandicarboxylate c(BF)n and butylene terephthalate c(BT)n, both mainly consisting of a mixture of dimer, trimer, and tetramer species, were synthesized by the high dilution condensation method. Random copolyesters with the targeted compositions and weight-average molecular weights within the 55 000–80 000 g·mol–1 range were obtained by ROP of c(BF)n/c(BT)n mixtures in periods of time much shorter than those required by melt polycondensation. The thermal properties of these copolyesters were consistent with their compositions and comparable to their isocompositional analogs obtained by polycondensation. A comparative kinetics study of the isothermal crystallization of the homopolyesters and copolyesters differing in composition revealed that the presence of the 2,5-furandicarboxylate unit...