Disclaimer: This work has been submitted by a university student. //2006-12-22: howstuffworks PET: The most common use of polyester today is to make the plastic bottles that store our much beloved beverages. So are the properties, e.g., durability and initial Young’s modulus. Chemists can now alter the dimensions and shape of polyester fibres to appear and feel more like natural fibres. Textiles blended from polyester… Based on characterstics ,intended use and performances of the finished product, polyesters are divided into three main categories:-. Shrinkage of the fibres also differs with the mode of treatment. Polyester, a chain of polymer fibers, is strong, washes and dries quickly and resists stretching, mold, wrinkling and chemical damage. Also, it was found that people were more interested in the appearance of the apparel than the fabric it was made of. Climbing suits, parkas, sleeping bags and other outdoor gear are using the new insulating polyester fiberfill products. Throughout the 1930s and 1940s. Resist soiling, but once an oil-based stain soaks in, it are often difficult to wash. Often blended with cotton or maybe wool to feature crease resistance, Polyester doesn’t absorb water, but it are often produced in such the way (as in polypropylene and microfibers) on “wick” water faraway from the skin. Copyright © 2006 - 2015, All Rights Reserved - Website It can be used for insulation by manufacturing hollow fibers. (See Figure 3.) It was British scientists – Whinfield and Dickson who patented PET or PETE in 1941.
A unique feature of polyester is that it is melt-spun fiber. When blended with cotton, polyester improves the shrinkage, durability, and wrinkling profile of this widely-produced fiber. Polyester has great electrical properties; Polyester has good chemical resistance to water as well as organic material; Polyester can be recycled and broken down into a resin form; Polyester has good heat and aging resistance; Applications of Polyester. Plastics are widely variety of polymers-based composite materials which possess appreciable me chanical strength (they have stiff chains at room temperature) and are characterised by plasticity,they can be formed or moulded into useful shapes by application of heat andpressure.
Reaction of alcohol with carboxylic acid results in the formation of esters. Complete identification of polymeric materials may not always be possible. While some sorts of polyester are biodegradable, most of them aren’t, and polyester production and use contribute to pollution round the world. Any opinions, findings, conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of UKEssays.com. The extent of cross-linking or “drying” depends on the amount of unsaturated oil present. It absorbs oily materials easily and holds the oil tenaciously. She has worked as an architect, restored cars, designed clothing, renovated homes and makes crafts. Like nylon, polyester is melt-spun – this process allows the fibres to be made in several shapes and sizes for specific applications. Oxidizing agents and bleachers don’t damage polyester fibres. Is Dielectric Manufacturing ISO Certified? Effect of alkalies; Polyester … Oxygen has to be excluded form the reaction chamber to avoid oxidation at high temperature. The inexpensive and durable fiber became very popular and the industry expanded rapidly till the 1970s. Carothers who discovered that alcohols and carboxyl acids could be successfully mixed to create fibers. Mylar was introduced in 1952. //-->,
Sorry, the comment form is closed at this time.