Literature DB >> 10514063

Self-curing membranes of chitosan/PAA IPNs obtained by radical polymerization: preparation, characterization and interpolymer complexation.

C Peniche1, W Argüelles-Monal, N Davidenko, R Sastre, A Gallardo, J San Román.   

Abstract

Chitosan/polyacrylic acid I PN's were prepared by radical polymerization of acrylic acid, AA, activated at low temperature, in an aqueous/alcoholic chitosan dispersion. AA monomer to polymer conversion and membrane compositions were determined by elemental analysis and FTIR. Evidences of interpolyelectrolite complex formation were found from the FTIR spectra as well. The gravimetric measurements and the elemental analysis after some exhaustive PAA extraction support the existence of some PAA grafting on the reactive amine group of the chitosan. Swelling degree of the membranes is highly dependent on pH and composition, showing a higher swelling in membranes richer in AA and increased pH due to the breaking of interpolyelectrolite salt bonds.

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Year:  1999        PMID： 10514063     DOI： 10.1016/s0142-9612(99)00048-4

Source DB:  PubMed          Journal:  Biomaterials        ISSN： 0142-9612            Impact factor:   12.479


  18 in total

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