MDSE 2650 TEXTILES EXAM 2 QUESTIONS WITH
VERIFIED ACCURATE ANSWERS
Manufactured Fibers - Answers - Any fiber derived by a process of manufacture from a
substance that is not naturally a fiber (man-made)
Raw material can be: - Answers - Natural (cellulose or protein) or Synthetic (Chemical)
Each step in manufactured fiber production - Answers - can be controlled
Parent fiber - Answers - Fiber in its simplest form
Five Basic Fiber Modifications - Answers - 1. Size and shape of spinneret
2. Fibers molecular structure and crystallinity
3. Additives can be added to the polymer solution
4. Spinning process/methods can be altered
5. Two polymers can come together separately within the same fiber
Finishes - Answers - NOT permanent
Additives - Answers - permanent
Manufactured Regenerated Fibers - Answers - Produced from naturally occurring
polymers not in fiber form; starting in Cellulose and Protein
Commodity fibers - Answers - Generic fiber sold to any buyer in the open market;
Inexpensive and common practice
Names of Man-Made Fibers - Answers - Commodity, Fiber Trademarks
Fiber Trademarks - Answers - Distinguished specialty fiber from generic fiber, Marketing
technique to attract buyer, Expensive to create and promote
Rayon - Answers - The first regenerated cellulosic-based fiber; Initially sold under the
name "artificial silk"
Physical Structure of Rayon - Answers - Striated surface contour, Serrated round
shape, Often used in staple form, Usually fine
Favorable Properties of Rayon - Answers - Good drape; Good luster; Conducts heat;
Moderate strength; Moderate elongation; Soft hand; Highly Absorbent; Good wicking
, Unfavorable Properties of Rayon - Answers - Low tenacity (Weakens dramatically when
wet); Low resiliency; Low dimensional stability; Low elastic recovery; Low abrasion
resistance; Shrinks progressively; Should be dry cleaned for best results
Modal Rayon - Answers - Stays drier; Stronger; Better dimensional stability; Moderate
elastic recovery; Softer hand; Better washability
Uses of Rayon - Answers - Variety of everyday goods; Often blended with other fibers
to improve hand
Llyocell - Answers - First introduced in the 1990's; Originally marketed as type of rayon
Physical Structure of Llyocell - Answers - Round cross-section; Smooth surface; Used
equally in staple and filament length
Favorable Properties of Llyocell - Answers - Strongest of the cellulosic-based fibers
(Even when wet); Moderate resiliency; Good dimensional stability; Good elastic
recovery; Fluid drape; Lustrous; Soft hand; Comfortable; Absorbent; Relatively easy to
care for
Unfavorable Properties of Llyocell - Answers - Fiber can splinter or fibrillate; Pilling
affects appearance and hand
Tencel Llyocell - Answers - Excellent drape; Comfortable, soft hand; High absorbency;
Shrink-resistant; Strong Resists wrinkling; Easy care
Uses of Llyocell - Answers - Professional apparel; Casual wear; Pajamas
Acetate - Answers - Cellulose-based fiber; First thermoplastic fiber; Low cost fiber and
fabric
Physical Structure of Acetate - Answers - Round or flower-shaped cross-section;
Filament length; Linear; Fine diameter
Favorable Properties of Acetate - Answers - Good drape; Good luster; Smooth hand;
Low to moderate absorbency; Resistant to sunlight
Unfavorable Properties of Acetate - Answers - Weak fiber (Loses strength when wet);
Poor abrasion resistance; Poor elasticity; Low resiliency; Builds static; Thermoplastic;
Excess heat causes shrinkage; Can change color with time; Should be dry cleaned
Uses of Acetate - Answers - Widely used for satin and taffeta fabrics; Often a lining
fabric; Luster, hand, body; Low cost; Formalwear fabric
Bamboo Rayon - Answers - Sustainable resource, Fast growth rate, No need to replant;
A subclass of rayon
VERIFIED ACCURATE ANSWERS
Manufactured Fibers - Answers - Any fiber derived by a process of manufacture from a
substance that is not naturally a fiber (man-made)
Raw material can be: - Answers - Natural (cellulose or protein) or Synthetic (Chemical)
Each step in manufactured fiber production - Answers - can be controlled
Parent fiber - Answers - Fiber in its simplest form
Five Basic Fiber Modifications - Answers - 1. Size and shape of spinneret
2. Fibers molecular structure and crystallinity
3. Additives can be added to the polymer solution
4. Spinning process/methods can be altered
5. Two polymers can come together separately within the same fiber
Finishes - Answers - NOT permanent
Additives - Answers - permanent
Manufactured Regenerated Fibers - Answers - Produced from naturally occurring
polymers not in fiber form; starting in Cellulose and Protein
Commodity fibers - Answers - Generic fiber sold to any buyer in the open market;
Inexpensive and common practice
Names of Man-Made Fibers - Answers - Commodity, Fiber Trademarks
Fiber Trademarks - Answers - Distinguished specialty fiber from generic fiber, Marketing
technique to attract buyer, Expensive to create and promote
Rayon - Answers - The first regenerated cellulosic-based fiber; Initially sold under the
name "artificial silk"
Physical Structure of Rayon - Answers - Striated surface contour, Serrated round
shape, Often used in staple form, Usually fine
Favorable Properties of Rayon - Answers - Good drape; Good luster; Conducts heat;
Moderate strength; Moderate elongation; Soft hand; Highly Absorbent; Good wicking
, Unfavorable Properties of Rayon - Answers - Low tenacity (Weakens dramatically when
wet); Low resiliency; Low dimensional stability; Low elastic recovery; Low abrasion
resistance; Shrinks progressively; Should be dry cleaned for best results
Modal Rayon - Answers - Stays drier; Stronger; Better dimensional stability; Moderate
elastic recovery; Softer hand; Better washability
Uses of Rayon - Answers - Variety of everyday goods; Often blended with other fibers
to improve hand
Llyocell - Answers - First introduced in the 1990's; Originally marketed as type of rayon
Physical Structure of Llyocell - Answers - Round cross-section; Smooth surface; Used
equally in staple and filament length
Favorable Properties of Llyocell - Answers - Strongest of the cellulosic-based fibers
(Even when wet); Moderate resiliency; Good dimensional stability; Good elastic
recovery; Fluid drape; Lustrous; Soft hand; Comfortable; Absorbent; Relatively easy to
care for
Unfavorable Properties of Llyocell - Answers - Fiber can splinter or fibrillate; Pilling
affects appearance and hand
Tencel Llyocell - Answers - Excellent drape; Comfortable, soft hand; High absorbency;
Shrink-resistant; Strong Resists wrinkling; Easy care
Uses of Llyocell - Answers - Professional apparel; Casual wear; Pajamas
Acetate - Answers - Cellulose-based fiber; First thermoplastic fiber; Low cost fiber and
fabric
Physical Structure of Acetate - Answers - Round or flower-shaped cross-section;
Filament length; Linear; Fine diameter
Favorable Properties of Acetate - Answers - Good drape; Good luster; Smooth hand;
Low to moderate absorbency; Resistant to sunlight
Unfavorable Properties of Acetate - Answers - Weak fiber (Loses strength when wet);
Poor abrasion resistance; Poor elasticity; Low resiliency; Builds static; Thermoplastic;
Excess heat causes shrinkage; Can change color with time; Should be dry cleaned
Uses of Acetate - Answers - Widely used for satin and taffeta fabrics; Often a lining
fabric; Luster, hand, body; Low cost; Formalwear fabric
Bamboo Rayon - Answers - Sustainable resource, Fast growth rate, No need to replant;
A subclass of rayon
