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
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
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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
Journal: Carbohydrate Polymers - Volume 76, Issue 1, 2 March 2009, Pages 129–132
نویسندگان
Shengjun Wu, Zhengyu Jin, Jin Moon Kim, Qunyi Tong, Hanqing Chen,