Synthesis and Characterization of Poly(butylene glycol adipate-co-terephthalate/diphenylsilanediol adipate-co-terephthalate) Copolyester

Tiejun Ge; Meiyuan Wang; Xiaofeng He; Yang Yu; Xiaofeng Liu; Bo Wen; Peihan Liu

doi:10.3390/polym16081122

Synthesis and Characterization of Poly(butylene glycol adipate-co-terephthalate/diphenylsilanediol adipate-co-terephthalate) Copolyester

Polymers (Basel). 2024 Apr 17;16(8):1122. doi: 10.3390/polym16081122.

Authors

Tiejun Ge^{1

2}, Meiyuan Wang^{1

2}, Xiaofeng He^{1

2}, Yang Yu^{1

2}, Xiaofeng Liu^{1

2}, Bo Wen³, Peihan Liu³

Affiliations

¹ Department of Polymer Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
² Liaoning Polymer Materials Engineering and Technology Research Center, Shenyang 110142, China.
³ Liaoning Dongsheng Plastic Industry Co., Ltd., Yingkou 115003, China.

Abstract

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.

Keywords: diphenylsilanediol; mechanical properties; melt polycondensation; thermal stability.

Grants and funding

This research was funded by 2022 Liaoning Province Science and Technology Innovation Platform Construction Plan project (Liao Kefa (2022) No. 36). And Key technology research project of Yingkou City in 2022 (YingKefa (2022) No. 38).