1. Fabricating cellulose nanofibril from licorice residues and its cellulose composite incorporated with natural nanoparticles.
- Author
-
Wang, Si, Wang, Xiao, Liu, Wei, Zhang, Liguo, Ouyang, Hao, Hou, Qingxi, Fan, Kejing, Li, Jinsong, Liu, Pengtao, and Liu, Xinliang
- Subjects
- *
CELLULOSE , *CELLULOSE nanocrystals , *CELLULOSE fibers , *PERACETIC acid , *COLLOIDAL stability , *THERMAL stability - Abstract
• Cellulose fibers were separated from licorice residues by pulping and bleaching. • Cellulose nanofibril from licorice residues was got by enzymatic hydrolysis method. • Effects of enzymatic pretreatment on CNF were investigated. • ETCNF showed clear nanofibrillar structure and good colloidal stability. • Chitosan nanofibril and lignin nanoparticles were incorporated into ETCNF films. 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. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF