3.1.3. Effect of bleaching on virgin hair
Fig. 3a–c depict the variation of s3, I3, and Fv respectively with
bleaching time. The increase in free volumes size up to 3 h bleaching
time may be due to the swelling of the polymer network. Associated
with this, there is a marginal decrease in intensity I3, which
may be due to fusion of some of the adjacent free volume cavities