Graft polymerization of acrylic acid onto chitin nanofiber to improve dispersibility in basic water

被引：33
作者：
Ifuku, Shinsuke [1 ]
Iwasaki, Masayoshi [1 ]
Morimoto, Minoru [2 ]
Saimoto, Hiroyuki [1 ]
机构：
[1] Tottori Univ, Grad Sch Engn, Dept Chem & Biotechnol, Minami Ku, Tottori 6808552, Japan
[2] Tottori Univ, Res Ctr Biosci & Technol, Minami Ku, Tottori 6808550, Japan
来源：
CARBOHYDRATE POLYMERS | 2012年 / 90卷 / 01期
关键词：
Chitin; Nanofiber; Acrylic acid; Graft polymerization; ALPHA-CHITIN; UNIFORM WIDTH; 10-20; NM; CHITOSAN; SHELL;
D O I：
10.1016/j.carbpol.2012.05.087
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Graft copolymerization of acrylic acid (AA) on chitin nanofibers was carried out with potassium persulfate as a free radical initiator in an aqueous medium. The molar ratio of grafted AA increased with the AA concentration. The grafted chitin nanofibers were characterized by FT-IR, FE-SEM, UV-vis, XRD, and TGA. After polymerization, the characteristic morphology of chitin nanofibers was maintained. Chitin nanofibers grafted with AA were efficiently dissociated and dispersed homogeneously in basic water because of the electrostatic repulsion effect between nanofibers. AA was grafted on the surface and amorphous part of chitin nanofibers, and the original crystalline structure of a-chitin was maintained. At 330 degrees C, the weight residue of the graft copolymer increased with the grafted AA content. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：623 / 627
页数：5
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