title: Flexible fiber-reinforced composites with improved interfacial adhesion by mussel-inspired polydopamine and poly(methyl methacrylate) coating.
abstract: To obtain a kind of light-curable fiber-reinforced composite for dental restoration, an excellent interfacial adhesion between the fiber and the acrylate resin matrix is quite essential. Herein, surface modification on glass fibers were carried out by coating them with poly(methyl methacrylate) (PMMA), polydopamine (PDA), or both. The PMMA or PDA coating was performed by soaking fibers in PMMA/acetone solution or dopamine aqueous solution. PDA/PMMA co-coated glass fibers were obtained by further soaking PDA-coated fibers in PMMA/acetone solution. These modified fibers were impregnated with bisphenol A glycidyl methacrylate (Bis-GMA)/triethylene glycol dimethacrylate (TEGDMA) (5:5, w/w) dental resin at a volume fraction of 75%, using unmodified fibers as reference. Light-cured specimens were submitted to evaluations including flexural properties, morphological observation, dynamic mechanical thermal analysis (DMTA) and pull-out test. In comparison with unmodified glass fibers, all the modified glass fibers showed enhancements in flexural strength and modulus of Bis-GMA/TEGDMA resin composites. Results of DMTA and pull-out tests confirmed that surface modification had significantly improved the interfacial adhesion between the glass fiber and the resin matrix. Particularly, the PDA/PMMA co-coated glass fibers displayed the most efficient reinforcement and the strongest interfacial adhesion due to the synergetic effects of PDA and PMMA. It indicated that co-coating method was a promising approach in modifying the interfacial compatibility between inorganic glass fiber and organic resin matrix.
authors.affiliation: State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P.R. China.
authors.forename: Mi
authors.initials: M
authors.lastname: Yi
authors.affiliation: State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P.R. China.
authors.forename: Hongyang
authors.initials: H
authors.lastname: Sun
authors.affiliation: State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P.R. China.
authors.forename: Hongcheng
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, P.R. China. Electronic address: kqdengxuliang@bjmu.edu.cn.
authors.forename: Xuliang
authors.initials: X
authors.lastname: Deng
authors.affiliation: State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P.R. China. Electronic address: caiqing@mail.buct.edu.cn.
authors.forename: Qing
authors.initials: Q
authors.lastname: Cai
authors.affiliation: State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P.R. China.
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Yang
mesh_terms: D000268:Adhesiveness; D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D049872:Bivalvia / Q000737:chemistry*; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D055119:Elastic Modulus; D005898:Glass / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D011092:Polyethylene Glycols / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D011109:Polymethacrylic Acids / Q000737:chemistry; D019904:Polymethyl Methacrylate / Q000737:chemistry*
chemical_list: D020099:Coated Materials, Biocompatible; D003188:Composite Resins; D007211:Indoles; D011108:Polymers; D011109:Polymethacrylic Acids; C009753:fiberglass; C568283:polydopamine; C020946:triethylene glycol dimethacrylate; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate; D019904:Polymethyl Methacrylate
keywords: Fiber-reinforced composite; Interfacial adhesion; Poly(methyl methacrylate); Polydopamine; Prepreg; Surface modification