کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10601684 982350 2013 26 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chemical modification of chitin by grafting with polystyrene using ammonium persulfate initiator
ترجمه فارسی عنوان
اصلاح شیمیایی کیتین با پیوند با پلی استایرن با استفاده از آغازگر پرسوفات آمونیوم
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
Chitin was successfully grafted with polystyrene by free radical mechanism using ammonium persulfate (APS) initiator. The reaction was carried out in aqueous medium. The effect of pH, chitin:monomer weight ratio, APS, reaction time and reaction temperature were investigated. The results showed that the optimum conditions for grafting of polystyrene were found as follows: pH 7, chitin:monomer weight ratio of 1:3, 0.4 g of APS, reaction temperature of 60 °C and reaction time 2 h. The graft copolymer was characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis (TGA) and differential scanning electron microscopy (DSC). Gel permeation chromatography (GPC) analysis carried out on the hydrolyzed graft copolymer showed that the Mn and Mw were 6.3395 × 104 g/mol and 1.69283 × 105 g/mol, respectively, with polydispersity index of 2.7.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 98, Issue 2, 6 November 2013, Pages 1618-1623
نویسندگان
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