title: Rheological and structural characterization of HA/PVA-SbQ composites film-forming solutions and resulting films as affected by UV irradiation time.
abstract: Hyaluronan (HA)/poly (vinyl alcohol) bearing styrylpyridinium groups (PVA-SbQ) composites film-forming solutions were prepared by a negatively charged HA and an oppositely charged PVA-SbQ. The rheological properties and structural characterization of HA/PVA-SbQ composites in aqueous solution were investigated. Zeta potential measurements and TEM were utilized to explore the formation of HA/PVA-SbQ complex micelles in aqueous solution. UV spectra and DLS experiments confirmed that the micelles are photo-crosslinkable. HA/PVA-SbQ composites films were prepared by a casting method. The microstructure and properties of the film were analyzed by SEM, optical transmittance, DSC, XRD and tensile testing. The crosslinked HA/PVA-SbQ composites films exhibited higher UV light shielding and visible light transparency and better mechanical and water vapor barrier properties as well as thermal stability than the uncrosslinked HA/PVA-SbQ composites films, indicating the formation of three-dimensional network structure. This work provided a good way for increasing the mechanical, thermal, water vapor barrier, and optical properties of HA materials for the packaging material.
authors.affiliation: The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China. Electronic address: bhy.chem@163.com.
authors.forename: Huiyu
authors.initials: H
authors.lastname: Bai
authors.affiliation: School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Yunlong
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Patent Examination Cooperation Jiangsu Centre of the Patent Office, State Intellectual Property Office, Suzhou, Jiangsu 215011, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Xu
authors.affiliation: The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China.
authors.forename: Weifu
authors.initials: W
authors.lastname: Dong
authors.affiliation: The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China.
authors.forename: Xiaoya
authors.initials: X
authors.lastname: Liu
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D006820:Hyaluronic Acid / Q000737:chemistry*; D008422:Materials Testing; D055595:Mechanical Phenomena; D055620:Optical Phenomena; D011142:Polyvinyl Alcohol / Q000737:chemistry*; D012212:Rheology; D012996:Solutions; D020058:Styrene / Q000737:chemistry*; D013696:Temperature; D014466:Ultraviolet Rays; D014835:Volatilization; D014867:Water / Q000737:chemistry
chemical_list: D001672:Biocompatible Materials; D012996:Solutions; D014867:Water; D020058:Styrene; D011142:Polyvinyl Alcohol; D006820:Hyaluronic Acid
keywords: Composites film; Hyaluronan acid; PVA-SbQ; Packaging material; Photo-crosslinking