کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5178453 1502496 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Conductive poly(high internal phase emulsion) foams incorporated with polydopamine-coated carbon nanotubes
ترجمه فارسی عنوان
فوم های هدایت کننده (فاز امولسیون داخلی فاز بالا) با نانولوله های کربنی پوشش داده شده با پلیدوپامین ترکیب شده اند
کلمات کلیدی
فوم رسانا الکتریکی، امولسیون فاز داخلی، نانولوله کربنی با پوشش پلیودپامین،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی


- Electrically conductive poly(high internal phase emulsion) foams are prepared.
- Polydopamine-coated carbon nanotubes are effective in providing conductivity.
- Highly stable HIPEs are made possible by excellent dispersion of the CNTs.
- The cell size of poly(HIPE) foams decreases with increasing the CNT content.

Electrically conductive poly(high internal phase emulsion) (polyHIPE) nanocomposite foams based on poly(styrene-co-divinylbenzene) were prepared by incorporating polydopamine-coated carbon nanotubes (PDA-CNTs). Conductive yet amphiphobic CNTs were modified to PDA-CNTs by coating with PDA on the surface of CNTs to provide hydrophilicity. As a result, it was possible to prepare highly stable HIPEs having PDA-CNT content >10 wt% and resultant polyHIPE foams having enhanced conductivity due to the good dispersion of PDA-CNTs in aqueous phase. The foams made with a water-to-monomer ratio of 10:1 showed well-developed interconnected microcellular structure. With increasing PDA-CNT content, the yield stress and storage modulus of HIPE increased and the cell size of the polyHIPE foam decreased. The electrical percolation threshold was determined to be less than PDA-CNT 1 wt% and the conductivity at PDA-CNT content of 8 wt% was increased to as high as 10−2 Sm−1. Surface modification of CNTs by PDA was very effective in providing electrical conductivity due to their stable dispersion in aqueous phase while keeping the intrinsic properties of CNTs intact.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 110, 10 February 2017, Pages 187-195
نویسندگان
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