MDSE 2650 Exam II
Produced from raw materials or synthesized from chemicals - ANS-Manufactured Fibers
Manufactured from materials found in nature by modifying the polymer (e.g. cellulose) to a
derivative that can be spun and then changed back to its original chemistry - ANS-Regenerated
Fibers
Synthesized from non-fibrous materials - ANS-Synthetic Fibers
Made from natural/synthetic rubber - ANS-Rubber
Inorganic fibers manufactured from metal and glass - ANS-Mineral Fibers
Manufactured fibers that melt when heated - ANS-Thermoplastic Fibers
Thermoplastic fibers are good for applying _______ ________, like permanent pleats, because
of the ability to melt when heated - ANS-thermal finishes
The spinning process used to produce nylon, olefin, polyester, and other thermoplastics is ____
spinning. - ANS-melt
1. melt polymer chips/pellets
2. filter fluid
3. extrude fluid through spinneret
4. solidify fiber by cooling
5. stretch/draw the partially cooked fiber - ANS-Melt Spinning
The spinning process used to produce acetate, acrylic, modacrylic, spandex, and other
materials that can easily be dissolved in a solvent and then recovered by the removing the
solvent without changing the polymer properties is ___ spinning. - ANS-dry
1. dissolve fiber-forming substance in a solvent
2. filter fluid
3. extrude fluid through spinneret
4. solidify fiber by evaporating solvent using warm air
5. stretch/draw partially solidified fiber - ANS-Dry Spinning
The spinning process used to produce rayon, spandex, some acrylics, and other materials that
require a complex process because they can't easily be dissolved in a solvent is ___ spinning. -
ANS-wet
, 1. react raw material
2. filter soluble derivative
3. extrude soluble derivative
4. solidify fiber in chemical bath
5. stretch/draw partially solidified fiber - ANS-Wet Spinning
Fibers that are less than 1 denier in size (smaller than a single filament of silk) -
ANS-Microfibers
What can be changed by altering the shape of the spinneret holes? - ANS-Cross-Sections
Easiest to manufacture; most commonly used - ANS-Round Cross-Section
Similar to silk; used to enhance luster because it reflects light - ANS-Triangular Cross-Section
Used for carpet because lobes are effective at hiding dirt - ANS-Trilobal Cross-Section
For items that require high bulk but low weight; also for carpet to reduce soil appearance -
ANS-Hollow Cross-Section
Added to make manufactured fibers dull; Titanium Dioxide - ANS-Delusterant
What is the most manufactured synthetic fiber? - ANS-Polyester Fiber
By volume, _________ fibers are used more than _______ fibers. - ANS-synthetic, natural
What are the three regenerated fibers? - ANS-rayon, modal, and lyocell
What was the first manufactured fiber and what was it advertised as? - ANS-Rayon, as artificial
silk
This fiber shrinks progressively and is known as "cheaper rayon" - ANS-Viscose
This fiber does not shrink and has good dimensional stability. It is also a variation of rayon. -
ANS-High Wet Modulus Rayon
This fiber is used for technical textiles and is a variation of rayon. - ANS-High Tenacity Rayon
This fiber will shrink and is a variation of rayon. - ANS-Cupro
This fiber is made from bamboo, which is seen as an environmentally friendly source and is a
variation of rayon. - ANS-Bamboo Rayon
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller topgradesdr. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
