title: Melt-processed poly(vinyl alcohol) composites filled with microcrystalline cellulose from waste cotton fabrics.
abstract: Waste cotton fabrics (WCFs), which are generated in a large volume from the textile industry, have caused serious disposal problem. Recycling WCFs into value-added products is one of the vital measures for both environmental and economic benefits. In this study, microcrystalline cellulose (MCC) was prepared by acid hydrolysis of WCFs, and used as reinforcement for melt-processed poly(vinyl alcohol) (PVA) with water and formamide as plasticizer. The microstructure and mechanical properties of the melt-processed PVA/MCC composites were characterized by Fourier transform infrared spectra, Raman spectra, differential scanning calorimetry, thermal gravimetric analysis, X-ray diffraction, tensile tests and dynamic mechanical analysis. The results indicated that MCC could establish strong interfacial interaction with PVA through hydrogen bonding. As a result, the crystallization of PVA was confined and its melting temperature was decreased, which was beneficial for the melt-processing of PVA. Compared with the unfilled PVA, the PVA/MCC composites exhibited remarkable improvement in modulus and tensile strength.
authors.affiliation: State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
authors.forename: Xunwen
authors.initials: X
authors.lastname: Sun
authors.forename: Canhui
authors.initials: C
authors.lastname: Lu
authors.forename: Yong
authors.initials: Y
authors.lastname: Liu
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Xinxing
authors.initials: X
authors.lastname: Zhang
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D032561:Cotton Fiber; D007220:Industrial Waste; D055595:Mechanical Phenomena; D011142:Polyvinyl Alcohol / Q000737:chemistry*; D044366:Transition Temperature
chemical_list: D007220:Industrial Waste; D011142:Polyvinyl Alcohol; D002482:Cellulose; C109691:microcrystalline cellulose
keywords: Composites; Melt-processing; Microcrystalline cellulose; Poly(vinyl alcohol); Waste cotton fabrics