کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5189240 | 1381180 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polymer-water partition coefficients of extended range measured by using organic modifiers in the aqueous phase
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A procedure for estimating equilibrium polymer-water partition coefficients over a broad range of solute hydrophobicity is presented and evaluated. The coefficients were calculated from the concentration change in the liquid phase and hydro-organic mixtures of varying proportions were used to extend the range. Three hydrophobic polymers (PP, PE, and EBA), two types of solvent (acetonitrile and alcohols) and 12 model solutes were used. The estimated polymer-water partition coefficients, log Kpw, ranged from â0.5 to 8.5. The coefficients correlated to other partitioning systems such as the calculated log Poctanol-water up to â¼14 and the retention factor (log kw) in reversed-phase liquid chromatography.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 48, Issue 26, 13 December 2007, Pages 7523-7530
Journal: Polymer - Volume 48, Issue 26, 13 December 2007, Pages 7523-7530
نویسندگان
Ulla Gasslander, Astrid Arbin, Ann-Christine Albertsson,