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Desizing of polyester-cotton blends

Desizing of polyester-cotton blends (P/C)

Desizing for the cotton, polyester and cotton-polyester blends are different. Because of strength variation. 

(In the case of 100% polyester fabric formation, sizing and desizng processing can be negligible due to its higher strength as compared to cotton.)

In the case of P/C blend certain variation in desizing process is vital because mixed yarns have different properties than separate skeins, a diverse set of components are needed to create a well-balanced yarn. 

Polyester cotton mixes are proportioned similarly to cotton, however, because of the presence of polyester fibre, the composition of the size will be different.

In general, size can be added to cotton to increase its strength; however, because polyester fibre possesses strength, elasticity, and abrasion resistance, it does not require the same size as cotton. 

In addition to the normal compounds like starch, carboxymethyl cellulose (CMC), fats, waxes, and tallows that are included in cotton sizing, polyester-cotton blends' size contains substances like acrylic copolymer or polyvinyl alcohol (PVA). 

Polyester cotton blends (P/C) must be desized as thoroughly and evenly as possible. If there is any leftover size on the P/C mix surface, it will result in flaws such as -

1. Undue stiffness
2. Reedy appearance
3. Difficult to dye with even shade

Desizing of cotton and p/c blend fabric
Desizing of cotton and p/c blend fabric

For Cotton material

Cotton required strength property to improve weave ability hence, the addition of size which improves strength is as follows -

Size paste for cotton materials (Ends) includes starch, fats, waxes, tallow and carboxymethylcellulose(CMC).

Therefore,desizing of cotton requires (if the above size is used) are,
Enzyme Desizing or Enzyme treatment is required for complete desizing.

For P/C blend material 

In the P/C blend, polyester already has strength, and abrasion resistance properties hence, no requirement for the same size addition for the P/C blend, we add size as follows-

Size paste includes Polyvinyl alcohol (PVA) and Acrylic copolymer.

Therefore, desizing requires (if the above size is used) a Hot wash. Only hot wash can remove the complete size of the P/C blend.

If the polyester-cotton blend is sized with starch, tallow, CMC, etc then it will be difficult to remove it by hot wash. we need Enzyme washing to remove size.

The acrylic copolymer and polyvinyl alcohol (PVA) can be removed from the P/C blend by Hot wash but, the starch-related substances have to be removed only using a suitable Enzyme.

● Starch - removed by Enzyme treatment 

● PVA. - removed by a hot wash 


Questions -

  1. What is the difference between cotton and polyester desizing process?
  2. Describe desizing processing for p/c blend materials.


6. Wet processing. (2011, August 24). Textile Technology.

Arputharaj, A., Raja, A. S. M., & Saxena, S. (2016). Developments in sustainable chemical processing of textiles. In Green Fashion (pp. 217–252). Springer Singapore.

Cenite, M. (2015). Google Books. In The SAGE Guide to Key Issues in Mass Media Ethics and Law (pp. 847–858). SAGE Publications, Inc.

Chemicals used in textile processing. (2013, January 10). OEcotextiles.

Chemistry of textile manufacturing. (2014, April 29).; Worldofchemicals.

Get to know about chemical processing of textile materials. (2022, May 10). ECHEMI.

Kan, C.-W. (2015). Plasma treatments for sustainable textile processing. In Sustainable Apparel (pp. 49–118). Elsevier.

Textile School. (2010, November 10). Fabric wet processing techniques. Textile School.

textileblog. (2020, June 19). Stages of wet processing in textile industry. Textile Blog.

Vigo, T. L. (2014). Textile processing and properties: Preparation, dyeing, finishing and performance: Preparation, dyeing, finishing and performance (1st ed.). Elsevier Science & Technology.


Babu, S. (n.d.). Textile Adviser. from

Desizing. (n.d.). Kemin. from

Landage, S. M. (2022). Biotechnological approaches in desizing of textile materials. In O. L. Shanmugasundaram (Ed.), Applications of Biotechnology for Sustainable Textile Production (pp. 47–73). Elsevier.

Madhu, C. (n.d.). TEXTILE CHEMROSE. from

Process of cotton Textile Materials desizing. (2013, September 12).; Fibre2Fashion.

Trivedi, Y. (2021, May 9). Textile Desizing process.

Further reading,

 - Rushikesh Patil (Textile Engineer)
(DKTE Society textile engineering college Ichalkaranji)
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