تفاصيل الوثيقة

نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
Synthesis and characterization of (poly (N-vinyl formamide)-pregelled starch-graft copolymer
Synthesis and characterization of (poly (N-vinyl formamide)-pregelled starch-graft copolymer
 
الموضوع : كيمياء 
لغة الوثيقة : الانجليزية 
المستخلص : Bromate / cyclohexanone redox system was investigated as a novel initiator for graft copolymerization of N-vinyl formamide onto pregelled starch. A number of variables in the grafting reaction were investigated including N-vinyl formamide, cyclohexanone, bromate ion, sulphuric acid and pregelled starch concentrations, material to liquor ratio along with polymerization time and temperature. The graft copolymers were evaluated in terms of graft yield, graft reaction efficiency and homopolymer formation (%). The optimum conditions for grafting of N-vinyl formamide onto pregelled starch are: N-vinyl formamide 50% based on weight of substrate, cyclohexanone 15 mmol / l, bromate ion, 30 mmol / l, liquor ratio 10, pH 6, time 120 min., and temperature 40°C. On the other hand, characterizations of the resultant copolymers with respect to swelling capacity, solubility %, metal ion up-take and suitability as a sizing agent for cotton textiles were investigated. The results obtained reflect that, the resultant copolymer shows better results for the aforementioned properties in comparison with that obtained from native pregelled starch as a starting substrate. 
ردمد : 1022-9760 
اسم الدورية : Journal of Polymer Research 
المجلد : 17 
العدد : 6 
سنة النشر : 1431 هـ
2010 م 
نوع المقالة : مقالة علمية 
تاريخ الاضافة على الموقع : Saturday, October 29, 2011 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
خالد محمد مصطفىMostafa, Khaled Mباحثدكتوراهkh_mostafa@hotmail.com
عبدالرحيم عبدالرحمن سمرقنديSamarkandy, Abdul Rahim Abdul-Rahmanباحثدكتوراهkandy@kau.edu.sa
Azza A El-SanabaryEl-Sanabary, Azza Aباحثدكتوراه 

الملفات

اسم الملفالنوعالوصف
 31187.pdf pdfAbstract

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