Poly(butylene 2,5-thiophenedicarboxylate-co-glycolate) copolyesters with good degradation and barrier properties

IF 4.5 3区 工程技术 Q1 CHEMISTRY, APPLIED
Yin Liang , Guoqiang Wang , Lu Li , Bo Wang , Rui Wang
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Abstract

In this work, poly(butylene 2,5-thiophenedicarboxylate-co-glycolate) (PBTFGA) copolyesters were synthesized from 2,5-thiophenedicarboxylic acid, 1,4-butanediol and glycolic acid. The influence of the glycolic acid content on thermal properties, mechanical properties and degradation capacity of copolyesters was systematically investigated. The glass transition temperature of copolyesters closely matched that of poly(butylene 2,5-thiophenedicarboxylate) (PBTF). While also demonstrating good thermal stability. When the glycolic acid content was low, the copolyesters exhibited some crystallization capability, but they gradually became fully amorphous as the glycolic acid content increased. The tensile tests revealed that the young's modulus of the PBTFGA copolyesters ranged from 69.2 MPa to 221.4 MPa. With elongation at break exceeding 659%, outperforming most biodegradable packaging materials. Copolyesters exhibited excellent gas barrier properties to both oxygen (PO2 = 0.024 barrer) and carbon dioxide (PCO2 = 0.029 barrer), both of which are superior to poly(butylene 2,5-thiophenedicarboxylate). The incorporation of glycolic acid significantly reduced the crystalline content of the copolyesters, facilitating the interaction of water molecules with ester bonds in the polymer backbone. The weight of poly(butylene 2,5-thiophenedicarboxylate-co-glycolate) was decreased significantly during enzymatic hydrolysis, indicating excellent degradation performance

Abstract Image

具有良好降解和阻隔性能的聚(2,5-噻吩二羧酸丁二醇酯-共羟基乙酸酯)共聚物
本研究以 2,5-噻吩二甲酸、1,4-丁二醇和乙醇酸为原料合成了聚(2,5-噻吩二甲酸丁二醇酯-共乙醇酸)(PBTFGA)共聚物。系统研究了乙醇酸含量对共聚物热性能、机械性能和降解能力的影响。共聚聚酯的玻璃化转变温度与聚(2,5-噻吩二甲酸丁二醇酯)(PBTF)的玻璃化转变温度非常接近。同时还表现出良好的热稳定性。当乙醇酸含量较低时,共聚多酯表现出一定的结晶能力,但随着乙醇酸含量的增加,共聚多酯逐渐完全非晶化。拉伸试验表明,PBTFGA 共聚多酯的青年模量在 69.2 兆帕至 221.4 兆帕之间。断裂伸长率超过 659%,优于大多数生物降解包装材料。共聚聚酯对氧气(PO2 = 0.024 barrer)和二氧化碳(PCO2 = 0.029 barrer)均表现出优异的气体阻隔性能,这两项性能均优于聚(丁烯-2,5-噻吩二甲酸酯)。乙醇酸的加入大大降低了共聚聚酯的结晶含量,促进了水分子与聚合物骨架中酯键的相互作用。在酶水解过程中,聚(2,5-噻吩二羧酸丁二醇酯-共羟基乙酸酯)的重量明显降低,表明其具有出色的降解性能
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来源期刊
Reactive & Functional Polymers
Reactive & Functional Polymers 工程技术-高分子科学
CiteScore
8.90
自引率
5.90%
发文量
259
审稿时长
27 days
期刊介绍: Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.
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