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

被引：259

作者：

Peniche, C ^{[1
]}

Argüelles-Monal, W

Davidenko, N

Sastre, R

Gallardo, A

San Román, J

机构：

[1] Univ Havana, Ctr Biomat, Havana 10400, Cuba

[2] Univ Havana, IMRE, Havana, Cuba

[3] CSIC, Inst Ciencia & Tecnol Polimeros, E-28006 Madrid, Spain

来源：

BIOMATERIALS | 1999年 / 20卷 / 20期

关键词：

hydrogels; biodegradable delivery systems; chitosan; acrylic acid; interpolymer complexes;

D O I：

10.1016/S0142-9612(99)00048-4

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Chitosan/polyacrylic acid IPN'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. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：1869 / 1878

页数：10

共 46 条

[1]

[Anonymous], J APPL POLYM SCI

[2]

[Anonymous], 1987, EUROPEAN J PLASTIC S, DOI DOI 10.1007/BF00578375

[3] STUDY OF THE STOICHIOMETRIC POLYELECTROLYTE COMPLEX BETWEEN CHITOSAN AND CARBOXYMETHYL CELLULOSE [J].