Discussion
Match each effect of mercerisation with what causes it.
List I
A. Increased lustre
B. Higher dye uptake
C. Increased strength
D. Dimensional stability
List II
1. better alignment of the cellulose chains
2. the round, smooth fibre cross-section developed
3. shrinkage taken up under the applied tension
4. greater accessibility of the swollen cellulose
Answer: B
Correct answer: A-2, B-4, C-1, D-3
Four benefits from three structural changes. The convoluted, flattened cotton fibre swells into a round smooth cylinder that reflects light directionally, which gives the lustre. The swollen cellulose is more accessible to dye, which raises the uptake. The chains become better aligned along the fibre axis, which raises the strength. And the shrinkage is taken up under tension during the process, so the finished fabric is dimensionally stable afterwards.
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