POLYESTER

CREATION OF POLYESTER In 1926, United States – based E.I Du Pont de Nemours and Co. began research into very large molecules and synthetic fibres.This early research headed by W.H. Carothers centered on what became nylon, the first synthetic fibre. Soon after ,in the years 1939-1941, British research chemists took interest in the du Pont studies and conducted their own research in laboratories of Calico Printers Association , Ltd. This work resulted in the creation of the polyester fiber known in England as Terylene.

Terylene was creted by Whinfield and Dickson along with Birtwhistle and Ritchiethey in 1941. It is first manufactured by Imperial Chemical laboratories (ICI)

Polyester is a chemical term which can be broken into poly, meaning many, and ester, a basic organic chemical compound. The principle ingredient used in the manufacture of polyester is ethylene, which is derived from petroleum . In this process, ethylene is the polymer, the chemical building block of polyester, and the chemical process that produces the finished polyester is called polymerization. Extruder is used to produce very fine threads of polyester

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POLYESTER FIBRE

Polyester is a manufactured product, usually a textile, that is made from synthesized polymers. Polymers are molecules that consist of a long, repeating chain of smaller units called monomers. They have the highest molecular weight among any molecules, and may consists of billions of atoms. Human DNA is a polymer with over 20 billion constituent atoms.

POLYMER

CHARACTERISTICS OF POLYESTER

StrongResilientQuick dryingResistant to biological damage such as mold and mildew

Easy to washResistant to stretching and shrinking

Wrinkle resistant

Retains heatResistant to most chemicals

Abrasion resistant

Set pleats and crease

Highly flammable

TYPES OF POLYESTERTerylene

Terrycot

Terrywool

TERYLENEIt is the first polyester fibre created.

Used to make conveyor belt as it is very elastic.

TERRYCOTIt is a blend of terylene and cotton.

It has better absorbing power as compared to terylene

It is used for making shirts , skirts and other dress materials.

TERRYWOOLIt is a blend of terylene and wool.

It is warm in addition to all characteristics observed in polyesters.

It is used for making formal suits.

OTHER USES OF POLYESTERPolyester films which is also known as mylar which is intoduced in 1952 is a semi-chrystalline film used in many application such as radio tapes, high quality packaging, proffesional photographic printing, X-Ray film,etc.

For making lightweight sails , tents polyester core rope, etc.

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