title: Choline chloride/urea as an effective plasticizer for production of cellulose films.
abstract: Recently, choline chloride/urea (ChCl/urea), a typical deep eutectic solvent (DES), has been found to possess various applications in organic synthesis, electrochemistry, and nanomaterial preparation. Herein we reported the first attempt to plasticize regenerated cellulose film (RCF) using ChCl/urea as an effective plasticizer. Meanwhile, RCFs plasticized with glycerol and sorbitol were also prepared for comparison. The plasticized RCFs were investigated by Fourier transform infrared (FT-IR) spectroscopy, wide-angle X-ray diffraction (XRD), atomic force microscopy (AFM), and mechanical testing. Transparent and soft RCFs could be successfully prepared in the presence of ChCl/urea, and high elongation at break (34.88%) suggested a significant plasticizing efficiency. No new crystal and phase separation occurred to ChCl/urea plasticized RCFs. The thermal stability of ChCl/urea plasticized RCF was lowered. These results indicated that ChCl/urea was an effective plasticizer for producing cellulose films.
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Sha
authors.initials: S
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Xinwen
authors.initials: X
authors.lastname: Peng
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China. Electronic address: lxzhong0611@scut.edu.cn.
authors.forename: Linxin
authors.initials: L
authors.lastname: Zhong
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Shuangshuang
authors.initials: S
authors.lastname: Jing
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Xuefei
authors.initials: X
authors.lastname: Cao
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
authors.forename: Fachuang
authors.initials: F
authors.lastname: Lu
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
authors.forename: Runcang
authors.initials: R
authors.lastname: Sun
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D002794:Choline / Q000737:chemistry*; D055595:Mechanical Phenomena; D010968:Plasticizers / Q000737:chemistry*; D013696:Temperature
chemical_list: D010968:Plasticizers; D002482:Cellulose; D002794:Choline
keywords: Cellulose; Choline chloride; Deep eutectic solvent; Plasticizer; Urea