کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5432841 1508911 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
One-step, self-assembled highly oleophobic nanocomposite coatings
ترجمه فارسی عنوان
پوشش های نانوکامپوزیتی بسیار اتوفوبییک تک مرحله ای، خودمختار
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
چکیده انگلیسی


- Structuration of nanoparticles grafted copolymers by post reaction.
- Highly oleophobic nanosheets coatings by spread and spray technics.
- Oil contact angle of coated surfaces increases from 90° to 120°.
- Influence of post-grafted molecules on coatings structuration.

In a previous work, hybrid polymer/NP (nanoparticle) coatings with a homogeneous dispersion of NPs were realized by grafting amine-functionalized silica NPs onto associative thickening perfluorinated copolymers (HASE-F). Due to the presence of acid groups on the HASE_F copolymers, the grafting led to the formation of HASE-F/Si derivatives that will swell in water at neutral pH. Here, we report the post-grafting with perfluorinated acids RFn (C4F9, C6F13 and C8F17) in one step on the residual amine functionalities present on the NPs to afford HASE-F/Si/RFn derivatives. It was found that HASE-F/Si/RF8 is well dispersible in water at pH 7, and this suspension can be deposited by spraying and spreading techniques on a glass substrate. The new coatings display high oleophobic properties with olive oil contact angles up to 120°, which is due to a spontaneous self-organization in nanosheets.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Communications - Volume 2, November 2016, Pages 1-4
نویسندگان
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