کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1386318 982491 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Graft copolymerization of methyl acrylate onto pullulan using ceric ammonium nitrate as initiator
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Graft copolymerization of methyl acrylate onto pullulan using ceric ammonium nitrate as initiator
چکیده انگلیسی

Water absorption resins of pullulan graft methyl acrylate (PU-g-MA) using ceric ammonium nitrate (CAN) as an initiator has been investigated under nitrogen atmosphere in aqueous medium. The percentage grafting (%PG) is favoured by increasing reaction time but is affected by higher concentration of initiator and monomer, and high temperature. Experiments showed that the optimal conditions for grafting were: [CAN] = 0.004 mol/l which was added in 1 mol/l nitric acid; [MA] = 0.0465 mol/l; reaction time; 180 min and temperature, 40 °C. The graft copolymer was analyzed by infrared spectroscopy. The water absorption capacity of the resins decreased significantly with the increase in %PG.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 76, Issue 1, 2 March 2009, Pages 129–132
نویسندگان
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