کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1484256 | 991626 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of molecular volume of siloxane bonding and phenyl group in partially phenylated organic/inorganic hybrid glass
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The molecular volume of the siloxane bonding and phenyl groups in partially phenylated organic/inorganic hybrid glass were evaluated from the density. The partially phenylated organic/inorganic hybrid glass were prepared by sol-gel method starting from TEOS (tetraethylorthosilicate) and PTES (phenyltriethoxysilane) mixed at various molar ratios. The molar volume of the hybrid glass exhibited a completely linear dependence on the molar fraction of PTES showing that the molecular volumes of the siloxane parts and phenyl groups are constant irrespective of the molar fraction of PTES. From the obtained dependence of the molar volume on the added molar fraction, the molecular volumes of the siloxane bonding and phenyl group were estimated. Finally, the percolation threshold of the volume fraction of phenyl group was estimated from using the obtained molecular volumes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 354, Issue 29, 1 July 2008, Pages 3414-3417
Journal: Journal of Non-Crystalline Solids - Volume 354, Issue 29, 1 July 2008, Pages 3414-3417
نویسندگان
Yoshihiro Kamimura, Ken-ichi Kurumada,