文献类型：期刊文献

英文题名：Synergistic in-situ structural modification and interfacial engineering of lignin toward multifunctional biodegradable films

作者：Gao, Rui[1,2] Jin, Zekai[2] Li, Lidong[3] Lai, Chenhuan[1] Sun, Xueni[3] Chu, Fuxiang[2] Liu, Yupeng[2] Gao, Shishuai[2] Zhang, Daihui[1,2]

第一作者：Gao, Rui

通信作者：Lai, CH[1];Zhang, DH[1];Sun, XN[2]

机构：[1]Nanjing Forestry Univ, State Key Lab Dev & Utilizat Forest Food Resources, Nanjing 210037, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, State Key Lab Dev & Utilizat Forest Food Resources, Nanjing 210042, Jiangsu, Peoples R China;[3]Changzhou Univ, Sch Petrochem Engn, Jiangsu Key Lab Adv Catalyt Mat & Technol, Changzhou 213164, Peoples R China

年份：2026

卷号：445

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001681378100001)】；

基金：This study was funded by the National Natural Science Foundation (32494794, 32322056 and 32201508) , and National Key Research and Development Program of China (2023YFD2201405) .

语种：英文

外文关键词：Molecular-level strategy; Hydrogen-bonding network; Photothermal conversion; Sustainable materials

摘要：The use of non-degradable polymer films has raised urgent environmental concerns, prompting the development of biodegradable alternatives with robust mechanical performance; however, the heterogeneous structure and poor interfacial compatibility of lignin often limit its reinforcing efficiency in polymer matrices. Herein, a green gamma-valerolactone-gallic acid solvent system was developed for in situ lignin modification during pretreatment, enabling controlled structural reorganization and interfacial engineering within the polyvinyl alcohol (PVA) matrix. GA incorporation increased the density of polar functional groups and enhanced hydrogen bonding interactions with PVA chains, leading to improved interfacial compatibility and a more uniform polymer network. The resulting film demonstrated improved mechanical properties-tensile strength (similar to 46 MPa), Young's modulus (0.22 GPa), and toughness (70 MJ.m(-3)). Lignin integration enhanced water resistance and imparted efficient photothermal conversion, enabling stable cyclic heating under solar irradiation. This strategy provides a viable approach for developing biodegradable films that combine mechanical integrity with multifunctionality.