title: Surface-initiated atom transfer radical polymerization from chitin nanofiber macroinitiator film.
abstract: This paper reports the preparation of chitin nanofiber-graft-poly(2-hydroxyethyl acrylate) (CNF-g-polyHEA) films by surface-initiated atom transfer radical polymerization (ATRP) of HEA monomer from a CNF macroinitiator film. First, a CNF film was prepared by regeneration from a chitin ion gel with an ionic liquid. Then, acylation of the CNF surface with α-bromoisobutyryl bromide was carried out to obtain the CNF macroinitiator film having the initiating moieties (α-bromoisobutyrate group). The surface-initiated graft polymerization of HEA from the CNF macroinitiator film by ATRP was performed to produce the CNF-g-polyHEA film. The IR, XRD, and SEM measurements of the resulting film indicated the progress of the graft polymerization of HEA on surface of CNFs. The molecular weights of the grafted polyHEAs increased with prolonged polymerization times, which affected the mechanical properties of the films under tensile mode.
authors.affiliation: Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan.
authors.forename: Kazuya
authors.initials: K
authors.lastname: Yamamoto
authors.affiliation: Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan.
authors.forename: Sho
authors.initials: S
authors.lastname: Yoshida
authors.affiliation: Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan; Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan. Electronic address: kadokawa@eng.kagoshima-u.ac.jp.
authors.forename: Jun-Ichi
authors.initials: J
authors.lastname: Kadokawa
mesh_terms: D002686:Chitin / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D008970:Molecular Weight; D057139:Nanofibers / Q000737:chemistry*; D011102:Polyhydroxyethyl Methacrylate / Q000031:analogs & derivatives / Q000737:chemistry; D058105:Polymerization; D013499:Surface Properties; D014961:X-Ray Diffraction
chemical_list: D002686:Chitin; D011102:Polyhydroxyethyl Methacrylate; C023037:poly(2-hydroxyethyl acrylate)
keywords: Atom transfer radical polymerization; Chitin nanofiber film; Macroinitiator; Surface-initiated graft polymerization