کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5211506 1382953 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kinetics of the ring opening polymerization of ε-caprolactone catalysed by a proton exchanged montmorillonite clay
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Kinetics of the ring opening polymerization of ε-caprolactone catalysed by a proton exchanged montmorillonite clay
چکیده انگلیسی
Ring-opening polymerization of ε-caprolactone using a proton exchanged montmorillonite clay as initiator is reported. Effect of reaction temperature, solvent, weight ratio of initiator/monomer and reaction time on the conversion of monomer and the molecular weight are investigated .The kinetics indicated that the polymerization rate is first order with respect to monomer concentration and initiator concentration,respectively. Rate constants of bulk and in solution polymerizations are determinated at 80 °C. Mechanism studies showed that monomer inserted into the growing chains with the acyl-oxygen bond scission rather than the break of alkyl-oxygen bond.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 66, Issue 12, December 2006, Pages 1696-1702
نویسندگان
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