کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9559338 | 1381159 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polyaniline/zeolite LTA composites and electrical conductivity response towards CO
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Electrical conductivity response of polyaniline/zeolite composites towards CO is investigated in terms of dopant type, dopant concentration, zeolite LTA content and zeolite pore size. Both MA and HCl doped polyanilines respond with comparable magnitudes towards CO; the latter responses are slightly smaller for the same doping level. Addition of zeolite 4A reduces the electrical conductivity response but improves the sensitivity towards CO with increasing zeolite concentration up to 40%Â w/w. This concentration is evidently below the percolation threshold value, which is estimated to be above 50%Â w/w. Composite with zeolite 3A has a comparable sensitivity value relative to that of pure polyaniline. Composites of 4A and 5A have greater sensitivity values over that of the pure polyaniline at the CO concentration range between 16 and 1000Â ppm. Zeolite 5A is the most effective mesoporous material in promoting interaction between CO and polyaniline because of its largest pore size of 5Â Ã
, relative to the zeolite 3A and 4A which have the pore sizes of 4 and 3Â Ã
, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 46, Issue 3, 26 January 2005, Pages 947-953
Journal: Polymer - Volume 46, Issue 3, 26 January 2005, Pages 947-953
نویسندگان
C. Chuapradit, L. Ruangchuay Wannatong, D. Chotpattananont, Piyanoot Hiamtup, A. Sirivat, J. Schwank,