کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1384536 982408 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Graft copolymerization of itaconic acid onto sodium alginate using benzoyl peroxide
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Graft copolymerization of itaconic acid onto sodium alginate using benzoyl peroxide
چکیده انگلیسی

Graft copolymers of sodium alginate (NaAlg) with itaconic acid (IA) were prepared in aqueous solution using benzoyl peroxide (BPO) as the initiator. Grafted copolymers (NaAlg-g-PIA) were characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, scanning electron microscopy and thermogravimetric analysis. The grafting parameters, including the graft yield (GY%) of the graft copolymer and the grafting efficiency (GE%) of the reaction were evaluated comparatively. The effects of the reaction variables such as the reaction time, temperature, percentage of sodium alginate, monomer and initiator concentrations on these parameters were studied. It was observed that GY and GE first increased and then decreased with increasing polymerization temperature, concentrations of IA, and BPO. The optimum grafting conditions for maximum graft yield were obtained with reaction time of 1 h, reaction temperature of 85 °C, IA concentration of 1.38 M, BPO concentration of 1.82 × 10−2 M and percentage of NaAlg 1.5 g/dL.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 79, Issue 3, 11 February 2010, Pages 665–672
نویسندگان
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