74-82This paper reports a standardised method termed as Stain Degradation
Assessment (SDA) method, developed for the quantitative evaluation of
self-cleaning efficiency of the finished fabric. The method involves (i) a
standardized staining procedure to apply a uniform stain on the fabric, (ii)
instrumental evaluation of photodegradation of stain in terms of
K/S using a template to reduce error,
and (iii) analysis of K/S values to
evaluate stain degradation in percentage and its comparison with visual
assessment. This method has been found to give a reproducible and comparable
assessment of stain degradation on the textile material with respect to UV
exposure