Measurement of Water Absorption

Method for the measurement of water absorption

Water absorption tests of untreated and chemically modified okra bast fibres are carried out by taking a small amount (about 0.5 g) of the fibre. Fibre samples were first dried by heating in an electric oven at 70°C for about 2 h, weighed and then soaked in a bath of conductivity water at room temperature. After 24 h, the fibre samples were removed from water, dried by a cotton cloth and weighed again.

A-B
Percentage of water absorption by fibres =------------100
B
Where,
A = The weight of the fibres after water absorption.
B = The weight of the fibres before water absorption
(drying sample).