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Preparation and characterization of films based on crosslinked blends of gum acacia, polyvinylalcohol, and polyvinylpyrrolidone‐iodine complex
Author(s) -
Ahmad Syed Ishraque,
Hasan Nazim,
Zainul Abid C. K. V.,
Mazumdar Nasreen
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.28140
Subject(s) - polyvinylpyrrolidone , materials science , glutaraldehyde , polymer blend , chemical engineering , gum acacia , fourier transform infrared spectroscopy , swelling , polymer , aqueous solution , polymer chemistry , composite material , chemistry , organic chemistry , copolymer , food science , engineering
In an attempt to develop iodine‐release systems based on polymeric blend for biomedical applications, our research group prepared blends of gum acacia (GA), polyvinylalcohol (PVA), and polyvinylpyrrolidone‐iodine (PVP‐I) complex. The blends of GA/PVA and GA/PVA/PVP‐I prepared from the aqueous solutions of the polymers were crosslinked with glutaraldehyde to increase the water resistance of the films and to improve their thermal and mechanical properties. The crosslinked GA/PVA and GA/PVA/PVP‐I blend films were characterized by FTIR spectroscopy, DSC, and TGA. The swelling behavior of the prepared blends was investigated and crosslinked GA/PVA blend films were found to be pH sensitive. The properties of PVP‐I containing blends differed from those prepared without it probably due to the formation of an intermolecular interaction between PVP‐I and the hydroxy‐polymers. The results indicated that after crosslinking the blends showed improvement in water resistance, thermal, and mechanical properties. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008