Polyester Fiber | Top Physical And Chemical Properties Of Polyester Fiber

What is a Polyester Fiber

The physical and chemical properties of polyester fiber are important to know because it is a very important manmade fiber among all other synthetic fibers. When it produces with a long-chain synthetic polymer with ester. Chiefly, polyester is produced by the melt-spinning process. Additionally, it is the most commonly used synthetic fiber among other synthetic fibers. In the first place, DuPont introduced its Dacron polyester brand in 1951, but the material itself was patented earlier in 1941. All over, the use of polyester fabrics increases day by day. Polyester has some physical and chemical properties in a similar fashion which are important to know.

Physical And Chemical Properties Of Polyester Fiber

Figure: Polyester Fiber

Physical Properties of Polyester Fiber:

The polyester fiber has good elasticity, shape retention, wrinkle resistance, excellent wash and wear performance as well as durability in its physical properties. As a result, in all kinds of apparel fabrics, the use of polyester fiber has increased. At the same time, polyester fiber is poor in moisture absorption, its clothing makes the wearer feel hot and sticky it also produces static electricity easily which reflects in clothing absorbing dust and clinging to the body, which in fact, has poor comfort. Moreover, polyester has excellent performance in the dyeing process.

Like cotton or other textile fiber, furthermore, polyester fiber consists of some important physical properties. The following are the important physical properties of polyester. They are-

  1. Tenacity: The tenacity of polyester fiber is 5 – 7 gm/den
  2. Elongation at break: Polyester fiber elongation at break is 15 – 30%
  3. Elastic modulus: Its elastic modulus is 90
  4. Elasticity: It has good elasticity
  5. Moisture Regain (MR%): Polyester fiber moisture regain is 0.40%
  6. Specific Gravity: Specific gravity of polyester fiber is 1.38
  7. Melting point: Its melting point is at 2500C
  8. Volumetric Swelling: It has no volumetric swelling properties
  9. Ability to protest friction: Polyester fiber has an excellent ability to protect against friction characteristics
  10. Color: Polyester fiber is white
  11. Light reflection ability: Light reflection ability of polyester fiber is good
  12. Luster: Polyester fiber has a bright luster

Chemical Properties of Polyester Fiber:

The following are the various types of chemical properties of polyester fiber. They are:

  1. Acids: Good resistance to acids in cold conditions. But polyester degrades by H2SO4 at high temperatures.
  2. Basic: Good resistance to basic in cold conditions but Strong NaOH dissolves polyester in boiling.
  3. Effect of bleaching: Polyester does not affect by the bleaching process.
  4. Organic solvent: Organic solvent does not affect polyester fiber.
  5. Protection ability against mildew: Polyester fiber has good protection ability against mildew.
  6. Protection ability against insects: This fiber has good protection ability against mildew.
  7. Dyes: Polyester could be dyed with dispersed, azoic color and some pigments.
  8. Solvents of polyester: Following are the solvents of polyester:
    1. Chlorinated hydrocarbon.
    2. F3COOH
    3. Phenol (in hot condition)

So, during the processing of polyester, we have to consider its physical and chemical properties. The fiber is manufactured in different shapes and sizes for use for specific purposes. Last not least, In a polyester manufacturing unit, the management should follow all compliance issues regarding workplace safety.

In the modern age, the use of polyester fiber is significantly increased due to its demand for different technical purposes. Although it has various negative impacts on the environment it is cheap in price which gives it’s using demand. The researcher has invented different using scopes of polyester fiber in a different households as well as in regular life. So, when we select polyester fiber products we have to be concerned about environmental safety for the next generation.

14 thoughts on “Polyester Fiber | Top Physical And Chemical Properties Of Polyester Fiber”

  1. Hi, I am Onkar, Knit fabric technologist . looking for the suitable polyester yarn / Nylon yarn for high elongation as well as high stretch at both warp and weft direction in Knit fabric Inter lock based in weft knitting.

    Please suggest the best one. Fabric application is backing of artificial leather for automotive.

    Regards,/Onkar Tiwari

    • Hello sir
      Hotmelt is visible in my knitting fabric and there is hot melt patches in shoes upper how can I resolve this while upper is made please suggest

  2. Dear Brother

    Your site is very useful but if you gave the sources from where you are getting information from that would be great. If we use this site for the project professor does not accept it you have not references. If possible add the sources.

    Best regards

  3. AMAZING I’m doing a research project in science and this is exactly what I needed. Thank you very much. I will be visiting this website very frequently.

  4. Why doesn’t some smart person, find a way to easily get wrinkles out of POLYESTER. MY curtains look quell beast. Make something that can be sprayed on and whoosh, the wrinkles go away. You would make a fortune, polyester would be more popular than ever.


Leave a Comment