Water-Induced shape memory effect of nanocellulose papers from sisal cellulose nanofibers with graphene oxide

Laifu Song; Yuqi Li; Zhongqiang Xiong; Lulu Pan; Qiyun Luo; Xu Xu; Shaorong Lu

doi:10.1016/j.carbpol.2017.09.078

Water-Induced shape memory effect of nanocellulose papers from sisal cellulose nanofibers with graphene oxide

Carbohydr Polym. 2018 Jan 1:179:110-117. doi: 10.1016/j.carbpol.2017.09.078. Epub 2017 Sep 27.

Authors

Laifu Song¹, Yuqi Li², Zhongqiang Xiong¹, Lulu Pan¹, Qiyun Luo¹, Xu Xu³, Shaorong Lu⁴

Affiliations

¹ Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China.
² Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China. Electronic address: liyuqi@glut.edu.cn.
³ Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China; Department of Mechanical, Automotive & Materials Engineering, University of Windsor, 401 Sunset Ave, Windsor, ON, N9 B 3P4, Canada.
⁴ Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China. Electronic address: lushaor@163.com.

PMID: 29111033
DOI: 10.1016/j.carbpol.2017.09.078

Abstract

A novel water-induced shape memory nanocomposites were prepared by introducing graphene oxide (GO), which was based on microcrystalline cellulose nanofibers (MSF-g-COOH) extracting from sisal fibers. The results showed that the water-induced shape memory properties of MSF-g-COOH were significantly improved by the strong hydrogen bonding interaction between MSF-g-COOH and GO, It leads to some additional physically cross-linked points in MSF-g-COOH. On the other hand, at 0.5wt% GO loading, tensile strength and Young modulus of the nanocomposite increased from 139 to 184MPa, and from 5.77 to 8.54GPa, respectively, compared to those of pure MSF-g-COOH. Furthermore, a water-induced model was proposed to discuss the water-induced shape memory behaviors of the MSF-g-COOH/GO nanocomposites. This study provides a framework for developing a cellulose based shape memory polymers (CSMPs) and better understanding the shape recovery mechanism in water-induced CSMPs.

Keywords: Graphene oxide; Shape memory properties; Sisal cellulose; Water-induced mechanism.