@article { ISI:000261660200019,
	title = {Self assembled hydrophobic nanoclusters of poly(methylmethcrylate) embedded into polyvinyl alcohol based hydrophilic matrix: preparation and water sorption study},
	journal = {Journal of Applied Polymer Science},
	volume = {111},
	number = {3},
	year = {2009},
	month = {FEB},
	pages = {1300-1310},
	publisher = {JOHN WILEY \& SONS INC},
	address = {111 RIVER ST, HOBOKEN, NJ 07030 USA},
	abstract = {<p>Hydrophilic matrices containing nanosized Clusters of hydrophilic moieties have demonstrated potential applications in biomedical field. A novel hydrogel containing nanosized domains (20-35 nm) of hydrophobic moieties of poly(methyl methacrylate) (PMMA) was prepared by grafting crosslinked p ly(acrylic acid-co-methyl-methacrylate) chains onto polyvinyl alcohol (PVA) backbone using an efficient redox system. The graft copolymerization process was investigated to observe the influence of gel components on the kinetic parameters of grafting such as rate of grafting (R(g)), grafting yield (G(y)) and grafting efficiency (G(e)). The prepared graft nanohydrogel was evaluated for its water sorption potential under varying chemical composition of the gel and changing pH, temperature, and ionic strength of the swelling bath. The swelling process was also examined mechanistically and diffusion constants (D) of water molecules through the swellable nanohydrogel were also evaluated. (c) 2008 Wiley Periodicals, Inc. J ppl Polym Sci 111: 1300-1310, 2009</p>},
	keywords = {graft copolymers, hydrophilic polymers, Nanocomposites, swelling},
	issn = {0021-8995},
	doi = {10.1002/app.29155},
	author = {Shukla, Sandeep Kumar and Shaikh, A. Wasif and Gunari, Nikhil and Bajpai, A. K. and Kulkarni, R. A.}
}
@article { ISI:000263021000003,
	title = {Vinyl-2-pyrrolidone derivatized guar gum based aqueous two-phase system},
	journal = {Separation and Purification Technology},
	volume = {65},
	number = {1, SI},
	year = {2009},
	month = {FEB},
	pages = {9-13},
	publisher = {ELSEVIER SCIENCE BV},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>Aqueous two-phase systems (ATPs) are formed when certain combinations of two polymers or polymer and salt are added to water. Phase separation occurs at certain specific concentrations that have similar densities and low interfacial tensions. The present study involves synthesis and application of a novel derivatized guar in aqueous two-phase system. The derivation of guar gum was performed by grafting of 1-vinyl-2-pyrrolidone by a redox reaction in aqueous medium ceric ammonium nitrate (CAN) and potassium Peroxydisulfate(K2S2O8). The ratio of grafting efficiency (\%GE) and ratio of grafting (\%G) was 56\% and 70.1\% respectively. The grafted copolymers were characterized for percent yield and FTIR absorbance. A new aqueous two-phase extraction protocol was established using a mixture of derivatized guar and dextran. A phase diagram was constructed based on the phase separation exhibited by the system at 25 degrees C. The partition coefficient was determined for standard bovine serum albumin (BSA), lactate oxidase (LO) and phytase. The partitioning coefficients were 0.479, 1.981, and 2.586 respectively in the Dextran (2 mill ion)/V-GG/H2O system. The influence of an ionic salt sodium chloride (NaCl) was investigated on the partitioning of BSA. (C) 2008 Elsevier B.V. All rights reserved.</p>},
	keywords = {Aqueous two phase, graft copolymers, Guar gum, Partition coefficient (K), Phase diagram, Vinyl pyrrolidone, viscosity},
	issn = {1383-5866},
	doi = {10.1016/j.seppur.2008.03.020},
	author = {Kautharapu, Kumar and Pujari, Narahari S. and Golegaonkar, Sandeep B. and Ponrathnam, Surendra and Nene, Sanjay N. and Bhatnagar, D.}
}
