title: Fabrication of cellulose self-assemblies and high-strength ordered cellulose films.
abstract: Based on the formation of cellulose hydrogels in NaOH/urea aqueous solvent media, cellulose self-assembly precursor is acquired. It is proved that the water uptake capability of the cellulose hydrogels depends highly on the cross-link degree (CLD) of cellulose. With varying CLD and concentration of cellulose, a variety of morphologies of cellulose self-assemblies, including sheets with perfect morphology, high-aspect-ratio fibers, and disorganized segments and network, are formed through evaporation. Furthermore, cellulose films are fabricated by diecasting and evaporating the cellulose hydrogels, resulting in a 3D-ordered structure of closely stacking of cellulose sheets. The mechanical test indicates both tensile strength and flexibility of the cellulose films are greatly improved, which is attributed to the formation of the orderly stacking of cellulose sheets. The study is expected to lay an important foundation on the preparation of ordered and high-strength cellulose materials.
authors.affiliation: Key Laboratory of Fine Chemicals in Universities of Shandong, Qilu University of Technology, Jinan 250353, China. Electronic address: yuanzaiwu@163.com.
authors.forename: Zaiwu
authors.initials: Z
authors.lastname: Yuan
authors.affiliation: Key Laboratory of Fine Chemicals in Universities of Shandong, Qilu University of Technology, Jinan 250353, China.
authors.forename: Jingjing
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Fine Chemicals in Universities of Shandong, Qilu University of Technology, Jinan 250353, China.
authors.forename: Anning
authors.initials: A
authors.lastname: Jiang
authors.affiliation: Key Laboratory of Fine Chemicals in Universities of Shandong, Qilu University of Technology, Jinan 250353, China.
authors.forename: Wenting
authors.initials: W
authors.lastname: Lv
authors.affiliation: Key Laboratory of Fine Chemicals in Universities of Shandong, Qilu University of Technology, Jinan 250353, China.
authors.forename: Yuewen
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory of Fine Chemicals in Universities of Shandong, Qilu University of Technology, Jinan 250353, China.
authors.forename: Hongjuan
authors.initials: H
authors.lastname: Geng
authors.affiliation: Key Laboratory of Fine Chemicals in Universities of Shandong, Qilu University of Technology, Jinan 250353, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
authors.affiliation: Laboratory of Organic Chemistry, Taishan University, Taian 271021, China. Electronic address: qmh@qlu.edu.cn.
authors.forename: Menghua
authors.initials: M
authors.lastname: Qin
keywords: Cellulose; Cellulose film; High-strength; Ordered-structure; Self-assembly