环氧丙烷
材料科学
聚酯纤维
差示扫描量热法
高分子化学
环氧氯丙烷
共聚物
化学
有机化学
聚合物
环氧乙烷
物理
热力学
作者
Guoqiang Wang,Yakun Dong
标识
DOI:10.1007/s00289-023-04928-w
摘要
Poly(propylene 2,5-furandicarboxylate) is a kind of bio-based polyester, but the raw material (2,5-furandicarboxylic acid) is expensive. The purpose of this study is to investigate the effect of cheap 2,5-thiophenedicarboxylic acid on the synthesis and properties of poly(propylene 2,5-furandicarboxylate). 2,5-Furandicarboxylic acid, 2,5-thiophenedicarboxylic acid, and 1,3-propanediol were used to synthesize poly(propylene 2,5-furandicarboxylate), poly(propylene 2,5-thiophenedicarboxylate), and poly(propylene 2,5-furandicarboxylate-co-propylene 2,5-thiophenedicarboxylate). The thermal properties, dynamic mechanical properties, and rheological properties were characterized. The structures and properties of the copolymers were compared with those of two homopolymers. Fourier transform infrared spectroscopy and nuclear magnetic resonance spectra suggested that the copolymers were successfully synthesized. Differential scanning calorimetry and wide-angle X-ray diffraction results showed that poly(propylene 2,5-thiophenedicarboxylate) exhibited better crystallization ability. Compared with poly(propylene 2,5-furandicarboxylate), poly(propylene 2,5-thiophenedicarboxylate) is more prone to βrelaxation due to the larger angle between the two carbonyl groups connected to the thiophene ring and sulfur atom with weaker electronegativity.
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