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首页> 外文期刊>Journal of Applied Polymer Science >Chemosynthesis and characterization of fully biomass-based copolymers of ethylene glycol, 2,5-furandicarboxylic acid, and succinic acid
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Chemosynthesis and characterization of fully biomass-based copolymers of ethylene glycol, 2,5-furandicarboxylic acid, and succinic acid

机译：乙二醇，2,5-呋喃二甲酸和琥珀酸的完全基于生物质的共聚物的化学合成和表征

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摘要

Poly(ethylene 2,5-furandicarboxylate-co-ethylene succinate) (PEFS) copolymers of 2,5-furandicarboxylic acid (FDCA) and succinic acid with 11.98-91.32 mol % FDCA composition were synthesized via melt polycondensation in the presence of ethylene glycol using tetrabutyl titanate as a catalyst. PEFSs' molecular weight, thermal properties, and molar composition were determined by Fourier transform infrared spectroscopy, gel permeation chromatography, intrinsic viscosity, 1H NMR, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and wide-angle X-ray diffraction (WAXD) measurements. From experimental conditions, we obtained random copolymers with number-average molecular weights exceeding 25,600, determined by GPC and 1H NMR analyses. DSC analysis revealed that PEFS copolymers' melting temperatures differed depending on EF units' percentage. TGA studies confirmed that all PEFS copolymers' thermal stability exceeded 300°C. From WAXD analysis, it is observed that the PEFS copolymer crystal structure was similar to that of PES when EF unit was 11.98 mol % and to that of PEF when EF units were 74.35 and 91.32 mol %. These results benefit this novel biodegradable copolymer to be used as a potential biomaterial.
机译：2,5-呋喃二甲酸（FDCA）和琥珀酸的2,5-呋喃二甲酸乙烯-共聚琥珀酸乙烯酯（PEFS）共聚物通过在乙二醇存在下的熔融缩聚反应合成了FDCA组成为11.98-91.32 mol％的琥珀酸使用钛酸四丁酯作为催化剂。通过傅里叶变换红外光谱，凝胶渗透色谱，特性粘度，1H NMR，差示扫描量热法（DSC），热重分析（TGA）和广角X射线衍射确定PEFS的分子量，热性质和摩尔组成（WAXD）测量。根据实验条件，我们通过GPC和1H NMR分析获得了数均分子量超过25,600的无规共聚物。 DSC分析显示，PEFS共聚物的熔融温度根据EF单元的百分比而不同。 TGA研究证实，所有PEFS共聚物的热稳定性均超过300°C。通过WAXD分析，观察到当EF单元为11.98mol％时，PEFS共聚物的晶体结构与PES相似;当EF单元为74.35和91.32mol％时，PEFS共聚物的晶体结构与PEF相似。这些结果有益于这种新型的可生物降解的共聚物，可用作潜在的生物材料。

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