Hemp-based all-cellulose composites through ionic liquid promoted controllable dissolution and structural control

Ke Chen; Weixin Xu; Yun Ding; Ping Xue; Pinghou Sheng; Hui Qiao; Jimin He

doi:10.1016/j.carbpol.2020.116027

Hemp-based all-cellulose composites through ionic liquid promoted controllable dissolution and structural control

Carbohydr Polym. 2020 May 1:235:116027. doi: 10.1016/j.carbpol.2020.116027. Epub 2020 Feb 17.

Authors

Ke Chen¹, Weixin Xu², Yun Ding³, Ping Xue⁴, Pinghou Sheng⁵, Hui Qiao⁶, Jimin He⁷

Affiliations

¹ College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, 100029 Beijing, China. Electronic address: chenke0903@outlook.com.
² College of Materials Science and Engineering, Beijing University of Chemical Technology, 100029 Beijing, China. Electronic address: vanda_xu@163.com.
³ College of Materials Science and Engineering, Beijing University of Chemical Technology, 100029 Beijing, China. Electronic address: dingyun@mail.buct.edu.cn.
⁴ College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, 100029 Beijing, China. Electronic address: xueping@mail.buct.edu.cn.
⁵ State Key Laboratory of Bio-based Fiber Manufacturing Technology, China Textile Academy, 100025 Beijing, China. Electronic address: shengph2000@aliyun.com.
⁶ College of Materials Science and Engineering, Beijing University of Chemical Technology, 100029 Beijing, China. Electronic address: qiaoh@263.net.
⁷ College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, 100029 Beijing, China. Electronic address: hejm@mail.buct.edu.cn.

PMID: 32122518
DOI: 10.1016/j.carbpol.2020.116027

Abstract

All-cellulose composites (ACC) were effectively prepared by a low energy consumption strategy. The ionic liquid of 1-butyl-3-methylimidazolium chloride (BMIMCl) was used to immerse hemp fabric before hot-pressing process at a relative low temperature. The tensile strength and modulus of prepared ACC reached 81.1 MPa and 1.50 GPa, respectively. The dissolution mechanism of ACC by BMIMCl was successfully observed by the cooperation of optical microscope and polarizing microscope. Scanning electron microscope (SEM), X-ray diffraction (XRD), thermal gravimetric analysis (TGA) and mechanical testing were carried out to investigate the effect of hot-pressing temperature on the properties of ACC samples. ACC sample exhibited the highest mechanical performance at hot-pressing temperature of 120 °C. This work provided a simple and promising pathway for industrial application of high performance and environmental-friendly all-cellulose composites.

Keywords: All-cellulose composites; Ionic liquids; Mechanical properties; Structure-Property relations.