کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5211198 | 1382939 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Studies on graft copolymerization of 2-hydroxyethyl acrylate onto chitosan
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Studies on graft copolymerization of 2-hydroxyethyl acrylate onto chitosan Studies on graft copolymerization of 2-hydroxyethyl acrylate onto chitosan](/preview/png/5211198.png)
چکیده انگلیسی
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 1H 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 68, Issue 1, January 2008, Pages 389-395
Journal: Reactive and Functional Polymers - Volume 68, Issue 1, January 2008, Pages 389-395
نویسندگان
Grigoriy A. Mun, Zauresh S. Nurkeeva, Sergey A. Dergunov, Irina K. Nam, Tauzhan P. Maimakov, Erengaip M. Shaikhutdinov, Sang Cheon Lee, Kinam Park,