Styrene grafted silk fabrics were dyed with direct, acid, metal complex, reactive, disperse dyes. The effect of styrene grafting on the color fastnesses, and the color differences between silk and styrene grafted silk fabrics were examined.
The results obtained in this study are as follows
1) The color fastness to wet rubbing, water, washing and perspiration were slightly improved by the styrene grafting.
2) The fastness to dry rubbing was slightly lowered by the styrene grafting except the fabrics dyed with disperse dyes.
3) The dry cleaning fastness of disperse dyes considered to be affinitive to the grafted polymers was insufficient.
4) The styrene grafting seemed to have no effect on the color fastness to the light.
5) The color difference between silk and styrene grafted silk fabrics was remarkable. The hue, however, was hardly changed by grafting. The remarkable color difference might be caused by the differences in the lightness and chroma.

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A theoretical equation has been derived to estimate the amount of air flow which passes through a fabric at a given angle to a fabric surface. The reliability of the equation has experimentally been discussed to investigate the influence of the fabric construction and surface condition on the equation. The amount of air flow tends to be affected by the fabric surface in slower speed of air flow and in less angle to a fabric surface. The amount of air flow passing through the fabric of nozzle type, i.e., A>B in permeability parameter, is remarkably affected by the surface condition. The experimental amount of air flow is less than the theoretical value. By contrast, the amount of air flow passing through the fabric of capillary type, i.e., A<B. more agrees with a theoretical value than the fabric of nozzle type. Thus, the am ount of air flow can well be predicted by the theoretical value compensated by the parameters A and B.

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