Ge Tiejun, Wang Meiyuan, He Xiaofeng, Yu Yang, Liu Xiaofeng, Wen Bo, Liu Peihan
Department of Polymer Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
Liaoning Polymer Materials Engineering and Technology Research Center, Shenyang 110142, China.
Polymers (Basel). 2024 Apr 17;16(8):1122. doi: 10.3390/polym16081122.
The copolyester poly(butylene glycol adipate-co-terephthalate/diphenylsilanediol adipate-co-terephthalate) (PBDAT) was synthesized by the melt polycondensation method using terephthalic acid, adipic acid, 1,4-butanediol, and diphenylsilylene glycol as the raw materials. The molecular chain structure, thermal properties, thermal stability, mechanical properties, and degradation behaviors of the copolyesters were investigated. The results showed that the prepared PBDAT copolyesters exhibited good thermal stability and mechanical properties. With the increase in diphenylsilanediol (DPSD) content, the thermal stability of PBDAT and the melting temperature both increased. The tensile strength and elastic modulus of PBDAT also exhibited an increasing tend. When the DPSD content was 12.5% (PBDAT-12.5), the tensile strength, the elastic modulus, and elongation at break were 30.56 MPa, 238 MPa, and 219%, respectively. With the increase in diphenylsilanediol content, the hydrophilicity of PBDAT decreased, but PBDAT still shows good degradability and the thermal degradation T5% temperature was 355 °C. The thermal degradation of PBDAT was also improved.
通过熔融缩聚法，以对苯二甲酸、己二酸、1,4-丁二醇和二苯基硅二醇为原料合成了共聚酯聚（己二酸丁二醇酯-对苯二甲酸酯/己二酸二苯基硅二醇酯-对苯二甲酸酯）（PBDAT）。研究了该共聚酯的分子链结构、热性能、热稳定性、力学性能和降解行为。结果表明，所制备的PBDAT共聚酯具有良好的热稳定性和力学性能。随着二苯基硅二醇（DPSD）含量的增加，PBDAT的热稳定性和熔点均升高。PBDAT的拉伸强度和弹性模量也呈现出增加的趋势。当DPSD含量为12.5%（PBDAT-12.5）时，拉伸强度、弹性模量和断裂伸长率分别为30.56MPa、238MPa和219%。随着二苯基硅二醇含量的增加，PBDAT的亲水性降低，但PBDAT仍表现出良好的降解性，热降解T5%温度为355℃。PBDAT的热降解性能也得到了改善。
