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العنوان
Aspects of graft copolymerization of some vinyl monomers onto cellulosic materials /
المؤلف
Elawady, Mohammed Ibrahim Mohammed Elbassiony.
هيئة الاعداد
باحث / Mohammed Ibrahim Mohammed El-bassiony Elawady
مشرف / E. A. Abdel-Razik
مشرف / D. M. Aiad
باحث / Mohammed Ibrahim Mohammed El-bassiony Elawady
الموضوع
Graft copolymerization. Methyl methacrylate.
تاريخ النشر
2013.
عدد الصفحات
149 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
Organic Chemistry
تاريخ الإجازة
1/1/2013
مكان الإجازة
جامعة المنصورة - كلية العلوم - Department of Chemistry
الفهرس
Only 14 pages are availabe for public view

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from 149

Abstract

The graft copolymerization of methyl methacrylate (MMA), methyl acrylate (MA) and acrylonitrile (AN) onto Whatman Filter Paper (Wfp) as pure cellulose material using Mohr’s salt/potassium persulphate (FAS-KPS), ceric ammonium nitrate / nitric acid (CAN/HNO3) and potassium permanganate / oxalic acid (KMnO4/oxalic) respectively in aqueous media under visible light was extensively investigated. The effects of various reaction parameters such as time of irradiation, as well as the contents of initiators, monomer, cellulose material etc. on the grafting percentage (GP%) and grafting efficiency (GE%) were studied. The λmax and their extinction coefficient values of the used initiators were determined. The products of polymethyl methacrylate grafted cellulose (PMMA-g-Cell), polymethyl acrylate grafted cellulose (PMA-g-Cell) and polyacrylonitrile grafted cellulose (PAN-g-Cell) were characterized using FT-IR spectroscopy and thermal analysis techniques such as TGA and DTA. Water absorption and solvent resistance of PMMA-g-Cell, PMA-g-Cell and PAN-g-Cell copolymers were examined. The mechanism of grafting was suggested.