Moisture Regain:
Moisture regain is defined as the percentage of water present in a textile material of oven dry weight.
The percentage of moisture in a textile material brought into equilibrium with a standard atmosphere after partial drying, calculated as a percentage of the moisture-free weight.
Let,
Oven dry weight = D
Weight of water = W (= Original weight- oven dry weight)
Moisture Regain = MR or R
Then, MR (%) = 100 W/ D
Moisture Content:
Moisture content is defined as the weight of water in the material expressed as a percentage of the total weight.
Let,
Oven dry weight = D
Weight of water = W (= Original weight- oven dry weight)
Moisture Content = MC or C
Then, MC (%) = 100 W/( W + D)
Oven Dry Weight: The constant weight obtained by drying textiles at a specific temperature of 105 ± 3oC
Standard Moisture Regain:
The moisture absorbed by a particular weight sample in the standard atmosphere after treating at 105±3oC is called Standard Moisture Regain. It is also called official regain.
