Text and Science Care

Textile Science and Care 3(2+1)

Lesson 06 : Wool fibre

Chemical Properties

Effect of alkalies: As wool is protein in nature, it is susceptible to damage by expose to alkalies. Wool fibre dissolves in 5% sodium hydroxide solution.

Effect of acids: Wool can withstand cold and dilute acids. Concentrated acids, mineral acids such as sulphuric and nitric acids can damage the fibre.

Effect of bleaches: Wool is damaged by sodium hypochlorite or other chlorine bleaches. Hydrogen peroxide or sodium perborate may safely be used.