Fabrics Properties of Polyester

· It resists wrinkling.

· It is easy to launder

· It dries quickly

· It’s resistant to stretching

Physical Properties

Shape and Appearance :

These fibers are generally round and uniform. The fiber is partially transparent and white to slightly off -white in colour.

Strength :

The PET polyesters are in general, stronger. Polyester is found in industrial uses and the highly durable fabrics.

Elasticity :

Polyester fibers do not have high degree of elasticity. In general polyester fiber is characterized as having a high degree of stretch resistance, which means that polyester fabrics are not likely to stretch out of shape too easily.

Resilience :

Polyester fibers have high degree of resilience. Not only does a polyester fabric resist wrinkling when dry, it also resists wrinkling when wet.

Drapability :

Fabrics of polyester filament have satisfactory draping quality. Polyester spun yarn is flexible and softer, thereby draping quality is improved.

Chemical Properties

Reaction to Alkalies :

At room temperature, polyesters has good resistance to weak alkalies and fair resistance to strong alkali. It reduces with increase in temperature and alkalies concentration.

Reaction to Acids :

Depending upon type, polyester has good resistance to mineral and organic acids. Highly concentrated solutions at high temperatures cause degradation. Eg: Sulphuric Acid.

Effects of Bleaches :

Fabrics of polyester may be safely bleached, because polyesters have good resistance to deterioration to household bleaches. If the polyester have optical brightener, bleaching is not necessary.

Effect of Heat:

Ironing should be done at low temperature. It gets sticky at 4400 F.

Effect of Light :

Polyester has good resistance to degradation by sunlight. Over prolonged use, gradual deterioration of fiber occurs.

Affinity for Dyes :

Polyesters are dyed with appropriate disperse, developed dyes at high temperatures producing a good range of shades and color fastness.

Resistance to Perspiration :

Polyesters has no loss of strength from continued contact with either acid or alkaline perspiration. Polyester

Blends :

Polyester cotton blend, polyester wool blend, polyester rayon, polyester silk blend, polyacetate blend, , polyester and nylon are some common blends.