title: Surface modification of silk fibroin fibers with poly(methyl methacrylate) and poly(tributylsilyl methacrylate) via RAFT polymerization for marine antifouling applications.
abstract: In this study, silk fibroin surface containing hydroxyl and aminogroups was firstly modified using a polymerizable coupling agent 3-(trimethoxysilyl) propyl methacrylate (MPS), in order to induce vinyl groups onto the fiber surface. The reversible addition-fragmentation chain transfer (RAFT)-mediated polymerization of methyl methacrylate (MMA) and tributylsilyl methacrylate (TBSiMA) through the immobilized vinyl bond on the silk fibroin surface in the presence of 2-cyanoprop-2-yl dithiobenzoate (CPDB) as chain-transfer agent and 2,2'-azobis(isobutyronitrile) (AIBN) as initiator was conducted in toluene solution at 70°C for 24h. The structure and properties of the modified fiber were characterized by Fourier Transform Infrared Spectroscopy, (13)C, (29)Si Nuclear Magnetic Resonance (NMR) spectroscopy, thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), confirming the presence of the coupling molecule and the methacrylate groups onto the silk fibroin fiber surface. Molecular weight distributions were assessed by triple detection size exclusion chromatography (TD-SEC) in order to verify the livingness of the polymerization.
authors.affiliation: National Research and Development Institute for Cryogenics and Isotopic Technologies, ICIT Rm. Valcea, 240050 Rm. Valcea, Uzinei 4, CP7, Raureni, Valcea, Romania.
authors.forename: Mihaela-Ramona
authors.initials: MR
authors.lastname: Buga
authors.affiliation: Advanced Polymer Materials Group, University Politehnica of Bucharest, 1-7, Gh. Polizu Street, Sector 1, 011061 Bucharest, Romania. Electronic address: zaharia.catalin@gmail.com.
authors.forename: Cătălin
authors.initials: C
authors.lastname: Zaharia
authors.affiliation: National Research and Development Institute for Cryogenics and Isotopic Technologies, ICIT Rm. Valcea, 240050 Rm. Valcea, Uzinei 4, CP7, Raureni, Valcea, Romania.
authors.forename: Mihai
authors.initials: M
authors.lastname: Bălan
authors.affiliation: Université de Toulon, MAPIEM, EA 4323, 83957 La Garde, France.
authors.forename: Christine
authors.initials: C
authors.lastname: Bressy
authors.affiliation: Fédération des Sciences Chimiques de Marseille, CNRS-FR1739, Spectropole, 13397 Marseille, France.
authors.forename: Fabio
authors.initials: F
authors.lastname: Ziarelli
authors.affiliation: Université de Toulon, MAPIEM, EA 4323, 83957 La Garde, France.
authors.forename: André
authors.initials: A
authors.lastname: Margaillan
mesh_terms: D000327:Adsorption; D020099:Coated Materials, Biocompatible / Q000138:chemical synthesis*; D003343:Corrosion; D005349:Fibroins / Q000737:chemistry*; D008386:Marine Biology / Q000379:methods; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry*; D057139:Nanofibers / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D020099:Coated Materials, Biocompatible; D008689:Methacrylates; D005349:Fibroins; D019904:Polymethyl Methacrylate; C016284:butyl methacrylate
keywords: Grafting through; Living radical polymerization reversible addition fragmentation chain transfer (RAFT); Silk; Surface modification