Kuila et al of the Haldia Institute of Technology, and the University of Calcutta, India, modified polyvinyl alcohol (PVOH) by crosslink copolymerization of acrylic acid (AA) and acrylamide (AM) in aqueous solution of PVOH and finally crosslinking the copolymer with methylene bis acrylamide (MBA) and PVOH with glutaraldehyde to produce a full interpenetrating network (FIPN) membrane.  These full IPN membranes were used for pervaporative dehydration of ethylene glycol (EG).  The IPN membranes were found to show preferential sorption and diffusion for water.  Flux and water selectivity of these membranes were found to increase with increasing amount of copolymer in PVOH matrix. However, among the three membranes, FIPN75 were found to show the highest flux but lower selectivity for water while FIPN50 membrane showed optimum performance in terms of both flux and selectivity.  (RDC 5/5/2011)
Synthesis of full interpenetrating network membranes of poly(acrylic acid-co-acrylamide) in the matrix of polyvinyl alcohol for dehydration of ethylene glycol by pervaporation 
(391-403) Chemical Engineering and Processing 50, #4 (2011)

Acrylic Polymers   
Composites    
Interpenetrating Networks (IPN)  
Materials    
Nanocomposites   
Polyvinyl Alcohol (PVAL) (PVOH)(PVA)   

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