文献类型：期刊文献

英文题名：P/N/S synergistic flame retardant holocellulose nanofibrils efficiently pretreated from ternary deep eutectic solvents

作者：Ye, Jierui[1] Gao, Yuebing[1] Xu, Qingtian[1] Jin, Zhenfu[1] Wu, Guomin[2] Wang, Siqun[3] Cai, Zengkun[4] Yang, Ke[4] Wu, Qiang[1] Li, Qian[1]

第一作者：Ye, Jierui

通信作者：Wu, Q[1];Li, Q[1]

机构：[1]Zhejiang A&F Univ, Sch 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]Hangzhou Zhuopu New Mat Technol Co Ltd, Hangzhou 311300, Peoples R China

年份：2023

卷号：477

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20234615061046);Scopus(收录号：2-s2.0-85176557831);WOS:【SCI-EXPANDED(收录号:WOS:001112458800001)】；

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; Holocellulose nanofibrils; Flame retardant; Synergistic effect

摘要：Cellulose nanofibrils (CNFs) have widely attracted significant attention due to the excellent mechanical performance, biodegradability, and high surface functionality. However, the high flammability of CNFs commonly restricts their wider application. In this study, the intrinsically flame-resistant holocellulose nanofibrils (HCNFs, which is rich in both cellulose and hemicellulose) were obtained from bamboo under pretreatment using a highly efficient ternary deep eutectic solvent (TDES) and subsequential mechanical homogenization. The phytates and sulfate-containing HCNFs (PHCNFs) displayed nanofibril diameter of 3-5 nm and high aspect ratio of (similar to 500), and the aqueous suspension exhibited colloidal stability and high transmittance. The PHCNF films exhibited excellent fire resistance, mechanical and optical properties. Compared with raw HCNF, the limiting oxygen index (LOI) of PHCNF-120 film was up to 52.5 %, and the total heat release (THR) and peak heat release rate (PHRR) of PHCNF-120 films were significantly reduced by 92.2 % and 82.4 %, respectively. The flame retardant mechanism was attributed to the synergistic effect of P/N/S in both condensed phase and gaseous phases during the burning process. This work provides a novel, efficient strategy for developing eco-friendly flame-resistant and fireproof holocellulose-based nanomaterials.