Synthesis and characterization of semi-interpenetrating networks of chitosan and poly(N-vinyl-2-pyrrolidone)

Hemijska Industrija

卷:64

关键词: chitosan;    poly(N-vinyl-2-pyrrolidone);    FTIR analysis;    mechanical properties;    swelling behavior;   

DOI  :  10.2298/HEMIND100827057M

来源: DOAJ

【 摘 要 】

A semi-interpenetrating networks (semi-IPNs) based on chitosan andpoly(N-vinyl-2-pyrrolidone) were prepared in order to achieve bettermechanical properties. The samples were characterized by FTIR, SEM, DMAanalysis and the swelling behavior at different pHs (2.0-8.0). The semi-IPNscomposition was found to have a great impact the hydrogel structure,mechanical properties, morphology and swelling kinetics. The gelsdemonstrated substantial change in buffer absorbency with the change of pH,high for acid buffers and lower for pH values above 6 where the swelling wasconsiderably slow. Incorporation of PVP led to better mechanical strength ofsemi-IPNs keeping satisfactory degree of swelling which make them suitablefor various applications.

【 授权许可】

Unknown