Improvement of Dyeability of Para–-Aramid Fibers Using Electron–Beam–Induced Graft Polymerization
Improvement of Dyeability of Para–-Aramid Fibers Using Electron–Beam–Induced Graft Polymerization
复制标题
DOI：
10.2115/fiber.68.211
复制
发表时间：
2012-08
期刊：
影响因子：
--
通讯作者：
Kazumasa Hirogaki;Norie Kitagawa;T. Fujita;I. Tabata;K. Hisada;T. Hori
中科院分区：
文献类型：
--
作者：
Kazumasa Hirogaki;Norie Kitagawa;T. Fujita;I. Tabata;K. Hisada;T. Hori
The surface modification of a para-aramid fiber was investigated by graft polymerization of a vinyl monomer having an anionic group onto radicals on the fiber surface that were induced by electron beam (EB) irradiation. Generation of the radicals in the fiber irradiated with EB was evaluated, and it was determined that the radical concentration of the fibers increased with an increase in the dose of radiation. Acrylic acid (AA) was used as the anionic vinyl monomer for graft polymerization. Dyeability was improved for the fabrics that had been graft polymerized with AA because of the formation of ionic bonds between the anionic groups in the grafted chain and the cationic dyes. Furthermore, color fastness to washing was improved for the fabric graft copolymerized with AA and methyl acrylate (MA) compared to that for the fabric grafted with only AA, because the hydrophobic parts of MA in the grafted chains caused a hydrophobic interaction with the dye in addition to ionic bonding. (Received 13 February, 2012 ; Accepted 20 March, 2012) Transaction (39) SEN’I GAKKAISHI (報文)Vol.68, No. 8 (2012) 211 the fiber. It has been reported that for polyester, polyamide, polypropylene, and cotton fibers, attachment of anionic groups lead to improved dyeability of the fibers with cationic dyes [11, 12]. It has also been reported that a para-aramid fiber was graft polymerized with acrylic acid (AA) by an EB irradiation technique [13]. In this study, to improve the dyeability of a paraaramid fiber, we investigated the modification of the para-aramid fiber by EB-induced graft polymerization. AA, selected as the anionic monomer containing a carboxyl group, and methyl acrylate (MA), chosen as a hydrophobic monomer, were graft copolymerized onto a para-aramid fiber to interact with a cationic dye. The effect of the chemical structure of the grafted polymer chain on the dyeability of the fiber with a cationic dye was evaluated.