Improvement of thermodynamic properties of poly(butanediol sebacate-butanediol terephthalate) (PBSeT) composites based on the dispersion of PCaCO3@tannic acid formed by complexation of tannic acid and Ti

• Published in: Advanced composites and hybrid materials Vol. 5; no. 4; pp. 2787 - 2800
• Main Authors: Liu, Tong, Li, Zhimao, Jiang, Tianxiang, Xi, Shaohua, Li, Yingchun, Guo, Jiang, Huang, Mina, Algadi, Hassan, Ye, Xinming, Jiang, Qinglong
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.12.2022
• Subjects: Ceramics; Chemistry and Materials Science; Composites; Glass; Materials Engineering; Materials Science; Natural Materials; Polymer Sciences; Tannic acid; Biodegradable materials; Nano-CaCO; Thermal stability; Puncture load
• ISSN: 2522-0128; 2522-0136
• DOI: 10.1007/s42114-022-00564-6

Poly(butanediol sebacate—butanediol terephthalate) (PBSeT) has the excellent biodegradability. And nano-CaCO3 modified by titanate coupling agent is frequently added into polymers as an additive to reduce costs. In this research, the PBSeT-based composite was prepared by the melt blending method. Compared with PBSeT, the maximum thermal decomposition temperature, Young’s modulus, and glass transition temperature of the composite material were advanced by 12.67 ℃, 64.5%, and 10.36 ℃ when the content of tannic acid (TA) was 2, 4, and 6 wt%, respectively. Peculiarly, the puncture load of the composite was increased by 71.7% when the TA was 8 wt%; meanwhile, the degradation performance and water absorption performance were also better than other composites. Based on the comprehensive analysis of the experimental results, a complex named PCaCO 3 @TA was formed by interacting TA with Ti from the titanate coupling agent and coated the surface of nano-CaCO 3 to change the dispersion of nano-CaCO3. Moreover, glycerol is mainly concentrated in the BSe segment as polyphenol membrane attracting the secondary hydroxyl group from the unreacted glycerol. Graphical abstract The glass transition temperature, thermal stability, puncture load and degradation performance of polymer PBSeT are improved by forming composites with PCaCO 3 and tannic acid.