Physical & chemical properties of polyester fiber

Physical & chemical properties of polyester fiber

Molecular structure: This is a chemical compound named Polyethylene terephthalate.

Microscopic feature: 

This fiber we can get this as a staple and filament in both stages. Its cross-section of it is triangular, egg-shaped, and pentagonal. This fiber color is white. Due to the light reflection, its color will be not bright to bright. 

Physical properties: 

Tenacity: 4.5-5.0 gram/ denier. But for more high-strength fiber it can be up to 8 grams/denier.

Resiliency: This fiber has good resiliency and it can protect crimp. 

Abrasion resistance: Polyester fiber has good abrasion resistance.

Moisture regains: In the ideal state, it can be 0.4%.

Specific gravoty: 1.38

Heat conductivity: Good

Brightness: Bright to light 

Melting point: 250°C 

Dimensional stability: If we can do a heat set properly then it will never change its state. That means its gsm will be calculated as per shade% of color on the fabric. 

Chemical properties: 

Effect of bleach: Oxidizing and reducing bleaching agent never harm this fiber. 

The reaction of acid: Polyester fiber has a protective capacity near about all types of general acids. But hot and highly concentrated sulphuric acid damage polyester fiber. 

The reaction of alkali: Approximately all alkali is preventable but if heat is applied then they will be damaged. 

Organic solvent reaction: Organic solvent never does any harm to polyester fiber.

Resistance to stain: Oily stain is not removable.

Dye ability: In water and light ripe color and that is good to excellent. Disperse, azoic, reactive, and pigment dyes can be used to dye. 

Effects of mildew: Mildew never does harm it. 

Flammability behavior: It burns slowly and be shrink. 

Electrical and thermal conductivity: This fiber does have not any electrical conductivity. 

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