@article { ISI:000230531100013,
	title = {Poly(acrylonitrile) ultrafiltration membranes. I. polymer-salt-solvent interactions},
	journal = {Journal of Polymer Science Part B: Polymer Physics},
	volume = {43},
	number = {15},
	year = {2005},
	month = {AUG},
	pages = {2061-2073},
	publisher = {JOHN WILEY \& SONS INC},
	type = {Article},
	address = {111 RIVER ST, HOBOKEN, NJ 07030 USA},
	abstract = {<p>Fourier transform infrared spectroscopy was used to study the interactions among LiCl, ZnCl2, and AlCl3 with NN-dimethylformamide (DMF) and poly (acrylonitrile) (PAN). It was observed that all three salts complex with DMF as well as PAN. The strength of the cation interaction with the \&gt; C=O oxygen of DMF was found to be higher than that with the -CN group of PAN. The \&gt; C=O stretching frequency of DMF with ZnCl2 was red shifted, indicating stronger complex formation compared with other two cations. With the addition of salt, the salt-DMF pseudo solvent was found to become a 0 solvent for PAN compared with neat DMF. This change in PAN solvation power was primarily the result of DMF-salt complexation. As a result of the complexation, Mark-Houwink constant a, was found to reduce from 0.75 (for pure DMF) to similar to 0.6 for DMF-salt solvents, indicating decreased PAN chain expansion. Comparison of intrinsic viscosity [n] values indicated that addition of salts to PAN-DMF solutions resulted in: (i) decrease in the DMF solvation. power, which causes less expanded polymer coils, and (ii) increased interpolymer chain entanglements via salt-promoted chain association. (c) 2005 Wiley Periodicals, Inc.</p>},
	keywords = {activation energy viscosity, Additives, FT-IR, Poly(acrylonitrile), solution properties},
	issn = {0887-6266},
	doi = {10.1002/polb.20493},
	author = {Phadke, M. A. and Musale, D. A. and Kulkarni, Sudhir S. and Karode, Sandeep K.}
}
