文献类型：期刊文献

英文题名：Antibacterial and high-performance bioplastics derived from biodegradable PBST and lignin

作者：He, Taizhi[1];Jiang, Yinkui[1];Chang, Suichao[1];Zhou, Xin[1];Ji, Ying[2];Fang, Xiangchen[3];Zhang, Yan[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[2]Hong Kong Polytech Univ, Inst Text & Clothing, Hunghom, Kowloon, Kowloon, Peoples R China;[3]SINOPEC, Dalian Res Inst Petr & Petrochem, Dalian 116045, Liaoning, Peoples R China

年份：2023

卷号：191

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20224713149031);WOS:【SCI-EXPANDED(收录号:WOS:001026168300001)】；

语种：英文

外文关键词：Lignin; Poly(butylene succinate-co-butylene tere-phthalate); Polyhexamethylene guanidine; Antibacterial; Antioxidant

摘要：Herein, antibacterial bioplastic derived from lignin, poly(butylene succinate-co-butylene terephthalate) (PBST) was functionalized with the antibacterial lignin -g- (polyhexamethylene guanidine) (Lignin-g-PHMG). The Ligning-PHMG was synthesized by a facile grafting reaction. The epoxidized lignin provided sufficient reactive sites for the amine groups on PHMG. The structure of Lignin-g-PHMG was confirmed by Fourier-Transform Infrared Spectra (FT-IR) and X-ray Photoelectron Spectroscopy (XPS). The antibacterial bioplastics were developed by introducing Lignin-g-PHMG into the matrix of PBST and lignin. The composite bioplastics exhibited good mechanical performance, with a tensile strength of 20.69 MPa and an elongation at break of 414.88%, respectively. Moreover, the composite films revealed good antioxidant properties, and a highly efficient scavenging rate of 98.21% was detected for DPPH free radicals. The bacterial inhibition by the bioplastic composite films demonstrated a synergistic antibacterial effect between lignin and Lignin-g-PHMG on E. coli and S. aureus. Furthermore, the inhibition zone test indicated that the bioplastic composite could provide a durable and nonleaching antibacterial performance. Therefore, this study contributes to the conversion of lignin into multifunctional composites with potential antioxidant and antimicrobial applications.