کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1524067 1511824 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Locking effect: A novel insight in the silylation of montmorillonite surfaces
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Locking effect: A novel insight in the silylation of montmorillonite surfaces
چکیده انگلیسی

Montmorillonite (Mt) was silylated with 3-aminopropyltriethoxysilane (APTES) in a mixture of water/ethanol medium. The swelling property of the silylated product was evaluated by intercalating of cetyltrimethylammonium bromide (CTAB). Locking effect was observed in the process of silylation. The grafted silane molecules fix the interlayer height of the silylated Mt to a certain value by simultaneous condensation with the two adjacent layers. The locking effect results in the loss of swelling property of silylated Mt and only limited amount of surfactants are able to enter the galleries of the silylated products. The success of the surfactant intercalation suggests that the silylated Mt could be a carrier for the organic target matters.

“Locking effect” is resulted from simultaneous condensation of silane with the two adjacent Mt layers and the interlayer height of Mt can be controlled by the configurations of silanes.Figure optionsDownload as PowerPoint slideHighlights
► Silane molecules have been grafted onto the interlayer surfaces of Mt successfully.
► The grafted silane molecules fix the interlayer height of the silylated Mt to a certain value.
► The locking effect results in the loss of swelling property of the silylated Mt.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 136, Issues 2–3, 15 October 2012, Pages 292–295
نویسندگان
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