کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1384209 | 982395 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Graft copolymerization of N-vinylformamide onto sodium carboxymethylcellulose and study of its swelling, metal ion sorption and flocculation behaviour Graft copolymerization of N-vinylformamide onto sodium carboxymethylcellulose and study of its swelling, metal ion sorption and flocculation behaviour](/preview/png/1384209.png)
The present paper reports the graft copolymerization of N-vinylformamide onto sodium carboxymethylcellulose by free radical polymerization using potassium peroxymonosulphate/thiourea redox system in an inert atmosphere. The reaction conditions for maximum grafting have been optimized by varying the reaction variables, including the concentration of N-vinylformamide (12.0 × 10−2–28.0 × 10−2 mol dm−3), potassium peroxymonosulphate (4.0 × 10−3–12.0 × 10−3 mol dm−3), thiourea (1.2 × 10−3–4.4 × 10−3 mol dm−3), sulphuric acid (2.0 × 10−3–10.0 × 10−3 mol dm−3), sodium carboxymethylcellulose (0.2–1.8 g dm−3) along with time duration (60–180 min) and temperature (25–45° C). Water swelling capacity, metal ion sorption and flocculation studies of synthesized graft copolymer have been performed with respect to the parent polymer. The graft copolymer has been characterized by FTIR spectroscopy and thermogravimetric analysis.
Journal: Carbohydrate Polymers - Volume 75, Issue 4, 24 February 2009, Pages 604–611