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Processability of Composite Materials Containing Chitosan

Published online by Cambridge University Press:  15 February 2011

G. Graham Allan and
Mutombo Muvundamina
G. Graham Allan
Affiliation:
University of Washington, Department of Chemical Engineering and College of Forest Resources, Seattle, WA 98195.
Mutombo Muvundamina
Affiliation:
University of Washington, Department of Chemical Engineering and College of Forest Resources, Seattle, WA 98195.
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Abstract

The processability of polypropylene fibers into composite materials was characterized by dynamic wettability measurements. Single fibers were immersed in a series of aqueous acidic solutions of chitosan. Variations in the wetting force, observed for progressive and successive immersions of the fibers in the liquid, indicated adsorption of species out of the solution or the presence of foreign materials on the surface of the solid. The value of the advancing wetting force was used to assess the coating of the fibers by the liquid. Data on the surface composition of the fibers were obtained by electron spectroscopy for chemical analysis. The conditions of preparation of the composite materials containing chitosan were determined from the correlation of the observations on wettability, surface composition and scanning electron microscopy.

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References

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