材料科学
结晶度
均质机
复合材料
纤维素
纳米纤维素
纳米纤维
复合数
聚乙烯醇
纤维素纤维
纤维
流变学
化学工程
工程类
遗传学
生物
作者
Tsubasa Ueda,Akira Ishigami,Supaphorn Thumsorn,Takashi Kurose,Yutaka Kobayashi,Hiroshi Ito
标识
DOI:10.1016/j.mtcomm.2022.104316
摘要
Cellulose nanofibers (CNF) were prepared by nanoisolation using a newly developed ultrahigh-pressure homogenizer (UHPH). The CNF was treated by UHPH with 0, 10, and 20 passes. The effect of UHPH on defibrillation of the CNF and its structure was investigated. The UHPH-treated CNF reinforced poly(vinyl alcohol) (PVA) composite was fabricated by solvent casting. The effect of CNF on morphology, high-order structure, rheological property, and mechanical performance of PVA/CNF composites was investigated. Structural analyses revealed that fiber diameters and fiber distributions of the CNF decreased, and the relative crystallinity increased with an increase in the UHPH passes. The mechanical treatment by UHPH promoted CNF fiber dissociation without interfering with the CNF crystal structure. High crystallinity and interaction of the hydrogen bonding of the defibrillated, treated CNF significantly enhanced the mechanical performance of the PVA/CNF composites. The UHPH treatment presented defibrillated CNF with high crystallinity, which was developed for the high-potential cellulose nanofiber in fiber-reinforced composite materials.
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