title: Diblock copolymer of bacterial cellulose and poly(methyl methacrylate) initiated by chain-end-type radicals produced by mechanical scission of glycosidic linkages of bacterial cellulose.
abstract: Bacterial cellulose (BC) was mechanically fractured in vacuum at 77 K; this resulted in the scission of the β-1,4 glycosidic linkages of BC. The chain-end-type radicals (mechanoradicals) generated from the scissions were assigned by electron spin resonance (ESR) spectral analyses. A diblock copolymer of BC and poly(methyl methacrylate) (BC-block-PMMA) was produced by the mechanical fracture of BC with MMA (methyl methacrylate) in vacuum at 77 K. Radical polymerization of MMA was initiated by the mechanoradicals located on the BC surface. The BC surface was fully covered with the PMMA chains of the BC-block-PMMA. Novel modification of the BC surface with the BC-block-PMMA was confirmed by spectral analyses of ESR, Fourier-transform infrared, (1)H NMR, and gel permeation chromatography.
authors.affiliation: Institute for Environmental Science, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan, Faculty of Agriculture, Meijo University, 1-501, Tempaku-ku, Nagoya 468-8502, Japan, Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 133-8657, Japan, Graduate School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan, Department of Chemistry, Faculty of Science, Shizuoka University, 836, Ohya, Suruga-ku, Shizuoka 422-8529 Japan, Institute for Molecular Science, National Institutes of Natural Sciences, Nishigonaka 38, Myoudaiji, Okazaki 444-8585, Japan, and Toyota Central Research and Development Laboratories, Inc., 41-Yokomichi, Nagakute, Aichi 480-1192, Japan.
authors.forename: Masato
authors.initials: M
authors.lastname: Sakaguchi
authors.forename: Takeshi
authors.initials: T
authors.lastname: Ohura
authors.forename: Tadahisa
authors.initials: T
authors.lastname: Iwata
authors.forename: Shuhei
authors.initials: S
authors.lastname: Takahashi
authors.forename: Shuji
authors.initials: S
authors.lastname: Akai
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Kan
authors.forename: Hisao
authors.initials: H
authors.lastname: Murai
authors.forename: Motoyasu
authors.initials: M
authors.lastname: Fujiwara
authors.forename: Osamu
authors.initials: O
authors.lastname: Watanabe
authors.forename: Mamiko
authors.initials: M
authors.lastname: Narita
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals / Q000138:chemical synthesis / Q000737:chemistry; D041822:Gluconacetobacter xylinus / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry*; D019904:Polymethyl Methacrylate / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D005609:Free Radicals; D006027:Glycosides; D002482:Cellulose; D019904:Polymethyl Methacrylate