Anti-bacterial and swelling properties of acrylic acid grafted and collagen/chitosan immobilized polypropylene non-woven fabrics

Abstract

The various weight ratios of collagen/chitosan were used to immobilize the various grafted amounts of acrylic acid (AA) grafted polypropylene nonwoven fabric. For a given value of grafting percentage of AA and the immobilizing time period, the values of the immobilizing percentage of collagen/chitosan are increased with the increasing of chitosan contained in the mixtures of collagen/ chitosan. The antibacterial properties are also increased with the increasing of chitosan in the mixtures of collagen/chitosan and the immobilizing percentage of collagen/chitosan. The crosslinking reaction between the AA-grafted PP nonwoven fabrics and collagen/chitosan with glutaraldehyde are clearly sustained by examination from the spectra of the surface reflection infrared spectroscopy (IR). The values of water uptake and water diffusion coefficients are decreased with the increasing of chitosan in the mixtures of collagen/chitosan and the immobilizing percentages of collagen/chitosan at the same pH value of buffering water. © 2005 Wiley Periodicals, Inc.