کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5211386 1382947 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Organic-inorganic hybrid nanocomposites involving novolac resin and polyhedral oligomeric silsesquioxane
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Organic-inorganic hybrid nanocomposites involving novolac resin and polyhedral oligomeric silsesquioxane
چکیده انگلیسی
Octa(propylglycidyl ether) polyhedral oligomeric silsesquioxane (OpePOSS) was employed as a nanocrosslinker of novolac resin to prepare the organic-inorganic networks. The crosslinking reaction was investigated by means of Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectroscopy via model reaction. Thermal analyses indicate that the glass transition temperatures (Tg's) and thermal stability of the organic-inorganic networks increased with increasing the content of POSS. Contact angle measurements show that the organic-inorganic nanocomposites displayed a significant enhancement in surface hydrophobicity as well as reduction in surface free energy. The improvement in surface properties was ascribed to the presence of POSS moiety in place of polar component of phenolic thermosets.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 67, Issue 7, July 2007, Pages 627-635
نویسندگان
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