文献类型：期刊文献

英文题名：Flexible, transparent, and fire-proof cellulose nanofibril films with outstanding flame retardancy

作者：Ye, Jierui[1] Xu, Qingtian[1] Gao, Yuebing[1] Liang, Yipeng[1] Wu, Qiang[1] Wu, Guomin[2] Wang, Siqun[3] Chen, Pan[4] Li, Qian[1]

第一作者：Ye, Jierui

通信作者：Li, Q[1];Chen, P[2]

机构：[1]Zhejiang A&F Univ, Coll Chem & Mat Engn, Hangzhou 311300, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat Jiangsu Prov, Nanjing 210042, Peoples R China;[3]Univ Tennessee, Ctr Renewable Carbon, Knoxville, TN 37996 USA;[4]Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

年份：2024

卷号：211

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20240815607964);Scopus(收录号：2-s2.0-85185390991);WOS:【SCI-EXPANDED(收录号:WOS:001187892300001)】；

基金：The authors appreciate the support from Fundamental Research Funds of Jiangsu Key Lab. of Biomass Energy and Material (contract grant number: JSBEM-S-202308) .

语种：英文

外文关键词：Ternary deep eutectic solvent; Phosphorylated cellulose nanofibril; Flame-retardant; Synergistic effect

摘要：Naturally occurring cellulose nanofibril (CNF) is a major component of plant cell walls and possesses numerous advantages, including a high specific surface area, exceptional strength, abundant availability, renewability, and biodegradability. However, the inherent ignitability of CNF hinders its practical application in advanced functional materials. Herein, we report a novel ternary deep eutectic solvent, designed under mild mechanical grinding, capable of converting cheap bamboo cellulose into phosphorylated cellulose nanofibrils (PCNFs) uniform fibril diameters in the range of 3 - 10 nm. The pure PCNF-fabricated film exhibited excellent flameretardant and self-extinguishing performances (with a high limiting oxygen index of 70.2%) without adding flame-retardants. Compared with unmodified CNF, the peak heat release rate and total heat release of the PCNF films decreased by 96.7% and 96.9%, respectively. Furthermore, defibrillation significantly improved the mechanical and optical properties of the PCNF films, suggesting considerable potential for applying PCNFs in flameretardant packaging materials.