کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10618815 988188 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Polyurethane latex modified with polyaniline
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
Polyurethane latex modified with polyaniline
چکیده انگلیسی
The strategy of the modification of polyurethane latex with a conducting polymer, polyaniline, is proposed. It is based on the introduction of the polymer steric stabilizer to the latex. The stabilizer prevents the macroscopic precipitation of a conducting polymer during the polymerization. Polyaniline has been prepared by the oxidative polymerization of aniline in the presence of polyurethane latex with average particle size of 36 nm and poly(N-vinylpyrrolidone). Thus, modified latex produces an aqueous colloidal dispersion having the particle size 100-200 nm. The presence of poly(N-vinylpyrrolidone) was needed to obtain a colloid. In its absence, a polyaniline-polyurethane composite precipitated. The composite coatings obtained after their drying contained 5-18 wt.% polyaniline in a protonated emeraldine form, had the conductivity up to 10−2 S cm−1, and mechanical properties typical of elastomers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 151, Issue 2, 14 June 2005, Pages 93-99
نویسندگان
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