title: Chitosan/titanium dioxide nanocomposite coatings: Rheological behavior and surface application to cellulosic paper.
abstract: Incorporation of nanofillers into a polymeric matrix has received much attention as a route to reinforced polymer nanocomposites. In the present work, an environmentally friendly chitosan (CTS)/titanium dioxide (TiO2) nanocomposite coating was designed/prepared and subsequently employed for imparting antibacterium and improved mechanical properties to cellulosic paper via surface coating. Effect of TiO2 nanoparticle loadings on the rheological behavior of nanocomposite coatings was investigated. Surface application of CTS/TiO2 nanocomposite coatings to cellulosic paper was performed, and the antibacterial activity and mechanical properties of surface-coated cellulosic paper were examined. Results showed that the increased TiO2 nanoparticle loadings decreased the viscosity and dynamic viscoelasticity of the as-prepared coatings, and improved the antibacterial activity and mechanical properties of surface-coated cellulosic paper. The optimum loading of TiO2 nanoparticles was identified at 10%. This work suggested that CTS/TiO2 nanocomposite coatings may have the potential to be used as a promising antibacterial protective coating for paper packaging.
authors.affiliation: National Engineering Laboratory of Textile Fiber Materials and Processing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China; Key Lab of Biomass Energy and Material, Nanjing 210000, Jiangsu Province, China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510070, China. Electronic address: tangyj@zstu.edu.cn.
authors.forename: Yanjun
authors.initials: Y
authors.lastname: Tang
authors.affiliation: National Engineering Laboratory of Textile Fiber Materials and Processing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China.
authors.forename: Xiulan
authors.initials: X
authors.lastname: Hu
authors.affiliation: National Engineering Laboratory of Textile Fiber Materials and Processing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China.
authors.forename: Xinqi
authors.initials: X
authors.lastname: Zhang
authors.affiliation: National Engineering Laboratory of Textile Fiber Materials and Processing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China.
authors.forename: Daliang
authors.initials: D
authors.lastname: Guo
authors.affiliation: National Engineering Laboratory of Textile Fiber Materials and Processing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China.
authors.forename: Junhua
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Key Lab of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Jinan 250353, China.
authors.forename: Fangong
authors.initials: F
authors.lastname: Kong
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D004548:Elasticity; D053761:Nanocomposites / Q000737:chemistry*; D055620:Optical Phenomena; D010209:Paper; D012212:Rheology; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014783:Viscosity
chemical_list: C009495:titanium dioxide; D002482:Cellulose; D048271:Chitosan; D014025:Titanium
keywords: Antibacterial activity; Cellulosic paper; Mechanical properties; Nanocomposite coatings; Rheological behavior; Surface coating