An basic introduction about polyester fibers.

1. A presentation on
Polyester Fiber
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2. Presented by
oS. M. ZAKI MUJAHID
Roll No.: 172219
1st Batch, Session : 2017-18
Dept. of Textile Engineering
Jashore University of Science and Technology,
Jashore, Bangladesh
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3. Introduction
• Polyester is a man-made synthetic
polymer filament or staple fiber
which is derived as a salt formed
from the reaction between an
alcohol & an acid.
• Polyester fiber are chemically
composed of at least 85% by
weight of an ester of a substitute
atomic carboxylic acid, including
but not restricted to substituted
Terephthalate units and Para
substituted hydeoxybenzoate
units.
• Here degree of polymerization is
115-140.
Fig: Polyester Fiber
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4. Microscopic View
Figure: Microscopic view of Polyester
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5. Types of Polyester
• Polyethylene Terephthalate fiber (PET
Polyester)
• Poly-1,4-cyclo hexyline Dimethylene
Terephthalate fiber (PCDT Polyester)
• Other type of polyester fiber
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6. Chemistry of Polyester Polymer
Figure: Polymerization of Polyester (Left: PET; Right: PCDT)
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7. Manufacturing of Polyester (PET)
Filament
• Polymerization
• Drying
• Melt spinning
• Drawing the fiber
• Winding
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8. Properties Of Polyester
Physical Properties
• Tenacity: up to 85 cN/tex
• Elastic Recovery : @2% =98;
@5% = 65
• Hygroscopic Nature
• Moisture Regain: 0.2-0.5 %
• Thermal Properties
• Heat Resist: 150-200 C
Chemical Properties
• Effect Of Acids
• Effect Of Alkalis
• Effect Of Bleaches
• Sunlight
• Micro-Organisms
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9. Consumption of Polyester
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10. Characteristics of Polyester Fiber
• Strong
• Resistant to stretching and shrinking
• Resistant to most chemicals
• Quick drying
• Crisp and resilient when wet or dry
• Wrinkle resistant
• Mildew resistant
• Abrasion resistant
• Retains heat-set pleats and crease
• Easily washed
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11. Blending of Polyester with Fibers
• Polyester-Cotton (Resist wrinkles, Resist
stains, Retain shape)
• Polyester-Wool (Wrinkle resistance, Shape
retention, Increase durability)
• Polyester-Rayon (More durable, Shape
retention, More resilience)
• Polyester-Spandex (Used in active-wear)
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12. Uses of Polyester Fiber
• Apparel: Every form of clothing.
• Home Furnishings: Carpets, curtains,
draperies, sheets and pillow cases, wall
coverings, and upholstery.
• Other Uses: Hoses, power belting, ropes and
nets, thread, tire cord, auto upholstery, sails,
floppy disk liners, and fiberfill for various
products including pillows and furniture.
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13. Limitation of Polyester
• Low absorbency
• Static & pilling form
• Temperature sensitive
• Not as breathable
• Not environment friendly.
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