کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5188274 1381150 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Poly(N-ethyl-4-vinylpyridinium bromide)-sodium dodecyl sulfate complexes. Formation and supramolecular organization in salt containing aqueous solutions
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Poly(N-ethyl-4-vinylpyridinium bromide)-sodium dodecyl sulfate complexes. Formation and supramolecular organization in salt containing aqueous solutions
چکیده انگلیسی

Formation and supramolecular organization of poly(N-ethyl-4-vinylpyridinium bromide) (PEVP)-sodium dodecyl sulfate (SDS) complexes in aqueous-salt solutions have been studied. PEVP samples of three polymerization degrees (Pw = 570, 1200 and 2350) were used. For PEVP of lower polymerization degree (Pw = 570) only insoluble complexes were observed in the whole range of the reaction mixture composition studied: Z = [SDS]/[PEVP] ≤ 1. For PEVP of higher polymerization degrees (Pw = 1200 and 2350), water-soluble complexes are formed up to a critical value of the reaction mixture composition, Z, that is similar for both PEVP fractions. It was found that water-soluble complex species are either molecularly dispersed (i.e. each complex particle comprises only one macromolecule) or aggregated (includes about 40 polymer chains and 20,000 surfactant ions) depending on the complex composition. Complex composition, in its turn, was shown to be determined by PEVP polymerization degree and the reaction mixture composition.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 48, Issue 1, 5 January 2007, Pages 220-228
نویسندگان
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