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
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
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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 36Â nm and poly(N-vinylpyrrolidone). Thus, modified latex produces an aqueous colloidal dispersion having the particle size 100-200Â 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 5-18Â wt.% polyaniline in a protonated emeraldine form, had the conductivity up to 10â2Â SÂ cmâ1, 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
Journal: Synthetic Metals - Volume 151, Issue 2, 14 June 2005, Pages 93-99
نویسندگان
Irina Sapurina, Jaroslav Stejskal, Milena Å pÃrková, JiÅà Kotek, Jan ProkeÅ¡,