Compare the water absorbing capacity of nylon and cotton and write your observation
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Nylon have low absorbing capacity compared to cotton
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At the molecular level, nylon contains hydrophilic amide groups. Therefore nylon is water-absorbent. Water absorption will result in dimensional change. Assuming ordinary atmospheric conditions (23°C/60%RH), the equilibrium water absorption is 3.5% for nylon 6, 2.5% for nylon 66, and 1.5% for nylon 610.
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Cotton, for example, has more naturally occurring places that can form bonds with water molecules. This means that it can absorb a significant amount of water, about 25 times its weight! Nylon, on the other hand is not hydrophilic (a highly absorbent fiber), and can only hold about 10 percent of its weigh tin water.
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