کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1586208 1515068 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Linear and star architecture methacrylate-functionalised PDMS
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Linear and star architecture methacrylate-functionalised PDMS
چکیده انگلیسی

Methacrylate-terminated poly(dimethylsiloxane)s in both linear and star architectures have been produced through a time-efficient 1 pot, 2 stage reaction which involved hydrosilylation of small molecule silanes with allyl methacrylate and subsequent equilibration of the product with octamethylcyclotetrasiloxane (D4) in the presence of an acid catalyst. This synthetic route required only one work-up procedure and the products were comparable to those produced by 2 step processes typically reported in literature. All methacrylate-terminated products were approximately double the molar masses anticipated based on reagent loadings. This is thought to be due to redistribution of siloxane bonds in the presence of the platinum hydrosilylation catalyst accompanied by a loss of silicon from the reaction by evaporation of dimethylsilane. It is believed that this is the first report of such siloxane equilibration occurring at room temperature.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Today Communications - Volume 3, June 2015, Pages 122–129
نویسندگان
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