title: The effect of glycerol on properties of chitosan/poly(vinyl alcohol) films with AlCl3·6H2O aqueous solution as the solvent for chitosan.
abstract: The AlCl3·6H2O aqueous solution was used to dissolve chitosan (CS) and the CS/poly(vinyl alcohol) (PVA) blend films were prepared at the absence of acetic acid. AlCl3·6H2O was retained in CS/PVA film and glycerol was added to form the complex plasticizer with AlCl3·6H2O. The effect of glycerol on the water sorption, crystalline, thermal and mechanical properties of AlCl3·6H2O doped CS/PVA film was studied by atomic force microscopy, X-ray diffraction, thermal gravity analysis and tensile testing, respectively. The experimental results showed that glycerol had a significant positive effect on the properties of AlCl3·6H2O doped CS/PVA films. With the synergism effect of AlCl3·6H2O and glycerol, the prepared CS/PVA films showed excellent mechanical properties. With the addition of 30wt% glycerol, the AlCl3·6H2O doped CS/PVA films behave the tensile strength of 39MPa and elongation at break of 120%, respectively.
authors.affiliation: School of Chemical Engineering, Fuzhou University, Fuzhou 350108, People's Republic of China.
authors.forename: Xiancai
authors.initials: X
authors.lastname: Jiang
authors.affiliation: School of Chemical Engineering, Fuzhou University, Fuzhou 350108, People's Republic of China.
authors.forename: Yulai
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: School of Chemical Engineering, Fuzhou University, Fuzhou 350108, People's Republic of China. Electronic address: lxhou@fzu.edu.cn.
authors.forename: Linxi
authors.initials: L
authors.lastname: Hou
keywords: Acetic acid (PubChem CID: 50932954); AlCl(3)·6H(2)O (PubChem CID: 24012); Chitosan; Chitosan (PubChem CID: 71853); Dissolving; Glycerol (PubChem CID: 753); Mechanical properties; Poly(vinyl alcohol); Poly(vinyl alcohol) (PubChem CID: 16211801); Thermal properties