Studies on graft copolymerization of 2-hydroxyethyl acrylate onto chitosan

被引：64
|
作者：
Mun, Grigoriy A. [1 ]
Nurkedva, Zauresh S. [1 ]
Dergunov, Sergey A. [1 ,2 ]
Nam, Irina K. [1 ]
Maimakov, Tauzhan P. [2 ]
Shaikhutdinov, Erengaip M. [1 ]
Lee, Sang Cheon [3 ,4 ]
Park, Kinarn [3 ,4 ]
机构：
[1] Kazakh Natl Univ, Dept Chem Phys & Macromol Chem, Alma Ata 050012, Kazakhstan
[2] UNAT, High Educ Sch, Alma Ata 050013, Kazakhstan
[3] Purdue Univ, Dept Pharmaceut, W Lafayette, IN 47907 USA
[4] Purdue Univ, Dept Biomed Engn, W Lafayette, IN 47907 USA
来源：
REACTIVE & FUNCTIONAL POLYMERS | 2008年 / 68卷 / 01期
关键词：
chitosan; dynamic viscosity; FT-IR; graft-polymerization; 2-hydroxyethyl acrylate; NMR;
D O I：
10.1016/j.reactfunctpolym.2007.07.012
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Graft-polymerization of 2-hydroxyethyl acrylate (HEA) onto chitosan (CS) using ammonium persulfate (APS) as an initiator was carried out in an aqueous solution. Evidence of grafting was obtained by comparing H-1 NMR and FT-IR spectra and scanning electron microscopy images of chitosan and the grafted copolymer as well as solubility characteristics of the products. The effects of APS, HEA concentration, reaction temperature and duration of graft-polymerization were studied by determining the grafting parameters, such as grafting percentage and grafting efficiency. The HEA-grafted chitosan product is soluble in a wide pH range, while the original unmodified chitosan is water-soluble only in a narrow pH range. A mechanism for the free-radical grafting was proposed. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：389 / 395
页数：7
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