کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5205637 1502938 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Silica-containing polyetherimide hybrid films based on methyltriethoxysilane as precursor of inorganic network
ترجمه فارسی عنوان
فیلم های هیبرید پلی اتریمید حاوی سیلیکا بر اساس متیل تریت اکسیدیزان به عنوان پیشگام شبکه های معدنی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
Polyetherimide hybrid films containing 5-40% silica were prepared through a sol-gel process and thermal imidization by using methyltriethoxysilane as precursor of the inorganic network and a poly(amic acid) resulting from polycondensation reaction of 2,2-bis[4-(4-aminophenoxy)phenyl]propane with 2,2-bis[(3,4-dicarboxyphenoxy)phenyl]propane dianhydride. The properties of these films, morphology, water vapor sorption capacity, free surface energy, mechanical, thermal and electrical characteristics, were studied. The films exhibited good thermal stability, having an initial decomposition temperature above 470 °C and glass transition temperature in the range of 187-200 °C. They showed low dielectric constant and low dielectric loss in a large frequency field. Gas permeation tests using small molecules (He, N2, O2 and CO2) at 6 bar and 30 °C indicated that the hybrid films containing higher silica content showed higher permeability for all the tested gases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 52, July 2016, Pages 94-103
نویسندگان
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