Textile Science Chapter 2 Hw

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Textile science Chapter 2 hw 1. State the fiber property that most affects the indicated condition:
a. Pilling propensity pilling = hydrophobic & strength & static electricity
b. Producing permanent pleats. pleats = resiliency & thermoplasticity
c. Improving insulation. Scientists model the manner in which a liquid wets fibers, gaining useful insights for improving glass wool properties. Sandcastles are a prime example of how adding a small amount of liquid to a granular material changes its characteristics
d. Resistance to wear from rubbing abrasion resistance
e. Static buildup. hydrophobic fibers
f. Determination of “hand.” Hand” is the way a Fiber feels. Some terms used to describe the
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On the other hand, polyester is a manmade Fiber so you have more creativity with it. ´hey can be engineered a certain way with a specific end use. Many chemicals are involved

5. What is crimp? How does it affect the properties of a textile? Crimp is the bends and twists along the length of a fiber.
It increases resiliency, bulk, warmth, elongation, absorbency, and skin comfort. Makes the hand harsher and luster is reduced as crimp increase. Allows the fiber to stand off the skin so fabric will not cling to the wearer 's skin. Also helps make the fiber able to withstand being bent back on itself many times without breaking.

6. How does fiber absorbency affect the properties of a textile? Absorbency affects: skin comfort, static build-up, dimensional stability in water, stain removal, water repellency, and wrinkle recovery.

7. What is pilling? Why is it more apparent on some fibers than on others? Pilling is the formation of groups of short or broken fibers on the surface of a fabric that are tangled together into tiny balls (pills).
More apparent on hydrophobic fibers because their fibers have greater electrical static attraction for each other ran do not fall off the fabric surface. Wool also pills because it has a scaly surface. 8. Which fiber would be more suitable for athletic wear—one that wicks or one that absorbs moisture? Why? Wicking fibers are more suitable for athletic wear because

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