Fabricating cellulose nanofibril from licorice residues and its cellulose composite incorporated with natural nanoparticles

纤维素 复合数 纳米颗粒 化学 材料科学 化学工程 高分子化学 复合材料 有机化学 纳米技术 工程类
作者
Si Wang,Xiao Wang,Wei Liu,Liguo Zhang,H. Daniel Ou‐Yang,Qingxi Hou,Kejing Fan,Jinsong Li,Pengtao Liu,Xinliang Liu
出处
期刊:Carbohydrate Polymers [Elsevier BV]
卷期号:229: 115464-115464 被引量:30
标识
DOI:10.1016/j.carbpol.2019.115464
摘要

It is important to make full utilization of industrial biomass residues. Pulp was prepared from licorice residues by soda-anthraquinone pulping followed by peroxyacetic acid bleaching. Cellulose nanofibril was obtained by enzymatic pretreatment followed by homogenization of the pulp (ETCNF). The effects of enzymatic pretreatment on ETCNF were investigated. Chitosan nanofibril (CHN) and lignin nanoparticles (LNPs) were prepared and used for ETCNF composites, respectively. The results showed that ETCNF exhibited clear nanofibrillar structure and a highly relative colloidal stability, and a much higher crystallinity index and thermal stability compared to TEMPO-medicated oxidized one; the cellulose composite films incorporated with CHN or LNPs exhibited good thermal stability and hydrophobicity. Compared with ETCNF film, ETCNF@LNPs-5.0% film showed higher UV-blocking ability and thermal stability, but reduced light transmittance, while ETCNF@CHN-5.0% film showed improved mechanical properties and similar light transmittance. This study would expend licorice residues as potential materials for CNF and its applications.
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