Discussion
A softener improves the handle of a fabric mainly by
Answer: A
Correct answer: lubricating the fibres so they slide
A softener deposits a lubricating layer on the fibre surface, reducing the friction between fibres and between yarns so that the fabric bends and drapes more readily and feels smooth. Nothing about the fibre itself changes. That also explains the usual side effects - a lubricated surface is more easily soiled and, with cationic softeners, less absorbent.
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