Modification of biomass furan-based PEF copolyester with glycerol

IF 2.8 4区工程技术 Q2 POLYMER SCIENCE Macromolecular Research Pub Date : 2023-12-06 DOI:10.1007/s13233-023-00208-8

Chengzhi Liu, Dongsheng Zhao, Maliang Zhang, Kunmei Su, Zhenhuan Li

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Abstract

In order to solve the problem of low molecular weight in the synthesis of poly(ethylene 2,5-furandicarboxylate) (PEF) copolyester with titanium-based catalysts, this paper introduce an appropriate amount of glycerol (GC) into PEF to branch the straight chain polyester though the transesterification-melt polycondensation method, which solve the problem of low resin viscosity and low molecular weight. The structures of the copolymers were characterized by ¹H-NMR and ¹³C-NMR, and the results showed that the modified PEF copolyesters and poly(ethylene-co-glycerol 2,5-furandicarboxylate) (PEGFs) were successfully prepared. The intrinsic viscosity ([η]) of PEGFs copolyesters was characterized by Ubbelohde viscosity, and the results showed that the copolyester [η] was increased from 0.25 dL/g to 0.755 dL/g. The thermal properties of copolyester were characterized by differential scanning calorimetry and thermo gravimetry, and it was found that the glass transition temperature of PEGFs copolyester increased from 67.8 °C to 89.5 °C, and the maximum pyrolysis rate temperature increased from 386.6 °C to 402.8 °C. We characterized the UV resistance of PEGFs copolyester, and the results showed that PEGFs copolyester could be well degraded under ultraviolet light.

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甘油改性生物质呋喃基PEF共聚聚酯

为解决钛基催化剂合成聚乙烯2,5-呋喃二羧酸酯(PEF)共聚酯时分子量低的问题，在PEF中加入适量的甘油(GC)，通过酯交换-熔融缩聚的方法支链直链聚酯，解决了低树脂粘度和低分子量的问题。通过1H-NMR和13C-NMR对共聚物的结构进行了表征，结果表明，成功制备了改性PEF共聚酯和聚乙二醇-共甘油2,5-呋喃二羧酸酯(PEGFs)。用ubbelode粘度表征聚乙二醇共聚酯的特征粘度([η])，结果表明，聚乙二醇共聚酯的[η]由0.25 dL/g提高到0.755 dL/g。用差示扫描量热法和热重法对共聚酯的热性能进行了表征，发现PEGFs共聚酯的玻璃化转变温度从67.8℃提高到89.5℃，最大热解速率温度从386.6℃提高到402.8℃。我们对聚乙二醇共聚聚酯的抗紫外线性能进行了表征，结果表明聚乙二醇共聚聚酯在紫外光下可以很好地降解。图形抽象

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来源期刊

Macromolecular Research 工程技术-高分子科学

CiteScore

4.70

自引率

8.30%

发文量

100

审稿时长

1.3 months

期刊介绍： Original research on all aspects of polymer science, engineering and technology, including nanotechnology Presents original research articles on all aspects of polymer science, engineering and technology Coverage extends to such topics as nanotechnology, biotechnology and information technology The English-language journal of the Polymer Society of Korea Macromolecular Research is a scientific journal published monthly by the Polymer Society of Korea. Macromolecular Research publishes original researches on all aspects of polymer science, engineering, and technology as well as new emerging technologies using polymeric materials including nanotechnology, biotechnology, and information technology in forms of Articles, Communications, Notes, Reviews, and Feature articles.