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Investigating the In situ Free Radical Polymerization Kinetics of PS in the Prescence of Silica Nanoparticles

عنوان مقاله: Investigating the In situ Free Radical Polymerization Kinetics of PS in the Prescence of Silica Nanoparticles
شناسه ملی مقاله: ICHEC07_549
منتشر شده در هفتمین کنگره ملی مهندسی شیمی در سال 1390
مشخصات نویسندگان مقاله:

Mehdi Salami-Kalajahi - Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, P.O. Box ۱۵۸۷۵-۴۴۱۳, Tehran, Iran
Vahid Haddadi-Asl - Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, P.O. Box ۱۵۸۷۵-۴۴۱۳, Tehran, Iran
Hossein Roghani-Mamaqani - Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, P.O. Box ۱۵۸۷۵-۴۴۱۳, Tehran, Iran
Mohammad Najafi - Polymer Science and Technology Division, Research Institute of Petroleum Industry (RIPI), ۱۴۸۵۷۳۳۱۱۱,Tehran, Iran

خلاصه مقاله:
A number of batch polymerizations were performed to study the effect of pristine nanoparticle loading on the polymerization kinetic of styrene. For this, Conversion, molecular weight andpolydispersity index (PDI) were monitored during polymerization to investigate the reaction kinetics. According to results, adding nanoparticles causes no considerable change in the kinetic curves, while there is an optimum value for nanoparticles loading in which the monomerconversion and molecular weight reaches to its maximum level. However, increasing silica content resulted in an increase in PDI values. The best improvement of monomer conversion is achieved for nanocomposites containing 5 wt. % silica nanoparticles

کلمات کلیدی:
Polystyrene, Aerosil 200, Nanocomposite, Free Radical Polymerization

صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/341299/