پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 158 |
| تعداد شمارهها | 6,225 |
| تعداد مقالات | 67,685 |
| تعداد مشاهده مقاله | 114,997,569 |
| تعداد دریافت فایل اصل مقاله | 89,671,384 |
Synthesis, Characterisation and Flocculation Properties of Carboxymethyl Cellulose-g Acrylamide | ||
| Journal of Sciences, Islamic Republic of Iran | ||
| مقاله 7، دوره 15، شماره 1، خرداد 2004 اصل مقاله (197.77 K) | ||
| چکیده | ||
| Graft copolymers of acrylamide on carboxymethyl cellulose (d.s 0.4-0.5) were prepared by the use of ceric ion, ceric ion/reductant molecule initiator systems in aqueous medium. The graft copolymers were characterized by IR spectroscopy. The extent of graft copolymerisation was measured in terms of grafted chains as a function of both ceric ion and ceric ion/reductant molecule concentrations. It was found that introduction of reductant molecule resulted in up to 13 fold increase in percent graft levels. Flocculation of the copolymer samples and ungrafted carboxymethyl cellulose were studied using synthetic effluent of Kaolin (0.25%) in distilled water. The flocculation capacity measured in terms of reduction in the turbidity was found to be highest for carboxymethyl cellulose-g acrylamide and was dependent on the number and molecular size of the grafted polyacrylamide. | ||
| عنوان مقاله [English] | ||
| - | ||
| چکیده [English] | ||
| - | ||
|
آمار تعداد مشاهده مقاله: 1,009 تعداد دریافت فایل اصل مقاله: 1,791 |
||