Effect of water soluble polymerson the thermodynamic properties ofquaternary ammonium salt aqueous solutions

سال انتشار: 1396
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 292

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شناسه ملی سند علمی:

ISPTC20_217

تاریخ نمایه سازی: 2 تیر 1397

چکیده مقاله:

To investigate the new kinds of aqueous biphasic systems (ABS) produced by the addition of thermossensitivepolymer to aqueous solution of ammonium salts, vapor – liquid equilibria (VLE) and liquid – liquid equilibria(LLE) behavior of aqueous ammonium salt (AS) – polymer solutions, were carried out for ternary systems includingtetra methyl ammonium bromide (TMAB) + poly (propylene glycol)with an average molecular weight of 400 g.mol-1(PPG400) + water,tetra ethyl ammonium bromide (TEAB) + PPG400 + water, TMAB + poly (ethylene glycol) with anaverage molecular weight of 400 g.mol-1 (PEG400) + water and TEAB + PEG400 + water. Our results show that,TMAB and TEAB in aqueous solution of PPG form ABS.The phase forming ability of the investigated AS increasewith increasing the hydrophilicity of AS andfollows the order TMAB > TEAB. In the VLE section, the water activityand constant water activity lines were obtained for aqueous solutions of TMAB and TEAB in the absence and presenceof the polymer at T = 298.15 K.

کلیدواژه ها:

Aqueous biphasic systems ، vapor – liquid equilibria ، liquid – liquid equilibria ، ammonium salt ، polymer

نویسندگان

Masoomeh Baghlani

Department of Chemistry, University of Kurdistan, Sanandaj, Iran

Rahmat Sadeghi

Department of Chemistry, University of Kurdistan, Sanandaj, Iran