10_Fiber_Properties_II

10_Fiber_Properties_II - Fiber Properties: Part II Lesson...

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Fiber Properties: Part II Lesson 10 Sept 27, 2007
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Non-mechanical properties Sorption Moisture regain Swelling Shape Thermal response Staining
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Sorption Process of absorbing (in) or adsorbing  (on) material Uptake of Dye Water Oil
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Phobic or Philic Phobic = hate or fear Philic = love Hydrophobic = hates water (polyester) Hydrophilic = loves water (cotton) Oleophobic = hates oil  (readily releases oils during  laundering) Oleophilic = loves oil (polypropylene) Philics tend to absorp Phobics tend NOT to absorb
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Moisture Regain Essentially, how much water is absorbed  under specific conditions Usually T = 70°F, RH = 65% PET  0.2% Nylon 6  4% Wool  14%
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Moisture Regain – The MATH [ ] % 100 ) ( ) ( ) % 65 , 70 ( × - = dry Wt dry Wt RH F Wt MR
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Swelling % increase in diameter when immersed  in liquid Usually in water E.g. in water Viscose rayon 65% Nylon 3% PET 0%
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Fiber Identification Burning Chemical resistance Microscopy Staining Melting point
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This note was uploaded on 04/03/2008 for the course TT 105 taught by Professor Michielsen during the Fall '08 term at N.C. State.

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10_Fiber_Properties_II - Fiber Properties: Part II Lesson...

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