# Moisture Absorption of Fibres

###### 1. Introduction

Most of the fibres are hydroscopic and hydrophobic in nature,moisture absorbency divided whether the fabric is suitable for particular puspose.

1. Moisture Regain
2. Moisture Content
###### 1. 1 Moisture Regain

It  is defined as weight of water in a material expressed as a percentage of oven dry weight.
It is denoted by R.
R=W/D*100 Where,W=Weight of water and D=Oven dry weight

###### 1.2 Moisture Content

It is defined as the weight of water in a material expressed as a percentage of total weight.
It is denoted by M.
M=W/(W+D)*100                                                             Where,W=Weight of water and D=Oven dry weight

###### 2. Relationship between Moisture Regain and Moisture Content

M=R/(1+R/100)

Where : M= Moisture Content, R= Moisture Regain

MR and MC values of various fibres: