Textile industry is one of the most common industries in almost all countries around the globe. India is one of the fastest-growing economies of the world and occupies a prominent position in the global textile industry. The textile industry is considered to be the mother of Indian industrialization and plays a crucial role in the national economy. Global textile trade was estimated to be US$ 662 bn in 2011 and is expected to grow at a rate of 5% in the next 10 years. By the year 2021, the growth of the Indian Textile industry is envisaged as follows:

Growth of the Indian Textile Industry in cr

Apparel

6,64,000 (@9.0% CAGR)

Technical Textiles

1,60,750 (@10.0% CAGR)

Home Textiles

40,800 (@8.0% CAGR)


The textile industry contributes about 14% to our national industrial production. The existence of a vertically integrated supply chain and a diverse range of products are the factors that contribute to the growth of the textile and clothing industry in India, which in turn contributes 5.2% to the country's GDP. High-growth categories include home textiles, women's casual wear, innerwear, children's wear, workwear, uniforms, and technical textiles.


Home Textiles

The global home textiles market is estimated to be around US$ 35 billion, representing approximately 5% of the total textile market. This market is primarily dominated by the United States and Europe, together accounting for over 70% of the market size. Home textiles encompass various categories of items, including towels, bed linens, curtains, blankets, upholstery, kitchen linen, rugs, carpets, and more. These products play a crucial role in enhancing the comfort, protection, and decoration of households.

One of the significant issues encountered in the home textile industry is the problem of de-colorization, which appears in the form of spots and patches on dyed towels, apparels, bed sheets, and pillow covers when individuals use Benzoyl peroxide-based creams, gels, or lotions for the treatment of acne. The selection of suitable classes of dyestuffs and the combination of dyestuffs in the dyeing process play a major role in avoiding and minimizing such de-colorization problems.


Benzoyl Peroxide


Benzoyl peroxide is indeed one of the most important organic peroxides and finds widespread use in personal care and cosmetics, particularly for the treatment of acne and the bleaching of hair and teeth. Its molecular structure consists of two benzoyl groups bridged by a peroxide link.

Benzoyl peroxide readily undergoes homolysis, which is the breaking of the O-O bond, leading to the formation of free radicals. These free radicals contain at least one unpaired electron, making them highly reactive.

Forte) following below mentioned test method:


Composition of PersolTM Forte Cream

Precipitated Sulphur U.S.P. : 5% (w|w)

Hydrous Benzoyl peroxide B.P. equivalent to Anhydrous Benzoyl peroxide: 10%(w|w)

 

Preservatives:

Benzoic Acid I.P. : 0.079% (w/w)

Methylparaben I.P. : 0.007% (w/w)

 

 

  1. Cut two 4"x 4" specimens from the dyed sample.
  2. Mark the area on test specimens (2" 0.25" diameter), on which PersolTM Forte Cream has to be applied for test results.
  3. Weigh 0.50 0.05 gms. of cream on non-absorbing weighing paper.
  4. Transfer the cream from the weighing paper to the specimen using the plastic stirring rod.
  5. Spread the cream evenly over the entire specimen and work it into the structure of the dyed fabric.
  6. Allow the specimen to react with Benzoyl Peroxide for eight (8) hours 5 minutes at room temperature (65 10oF).
  7. Rinse each test specimen thoroughly in distilled water at 40 3C (105 5F) with occasional hand squeezing. To remove excess water, pass the test specimens through wringer rolls.
  8. Dry in a nylon mesh bag, exposing at temperature of 60-71C (140 - 160F).
  9. Condition the samples for 4 hours before evaluation in standard atmosphere [65%2% RH; 702oF].
  10. Evaluate color change on the marked area on both specimens using grey scale in light box under D65 light source and report average grade (nearest to 0.5).


Pass - If the change in lightness as assessed using the grey scale is greater than or equal to 4.0 and if there is no perceptible change in hue.

 

Fail - If the change in lightness as assessed using the grey scale is less than 4.0 and/ or there is a perceptible change in hue.


Pass Fail














 

Findings:


Product Name

(NOVATIC MD)

Change in Shade

(Effect of Benzoyl peroxide)

Report

After 8 hrs.

Yellow 5GF

4-5 (On Tone)

Pass

Yellow 4GL

4-5 (On Tone)

Pass

Yellow 3R

4-5 (On Tone)

Pass

Brill. Red 3B

4-5 (On Tone)

Pass

Brown BR

4-5 (On Tone)

Pass

Brown R

4-5 (On Tone)

Pass

Olive TN

4 (On Tone)

Pass

Black DB

4-5 (On Tone)

Pass

Direct Black AC

4 (On Tone)

Pass


The above dyestuffs can be used in recipes, where critical Benzoyl peroxide fastness is demanded by the buyers. However, it is recommended that the dyed swatches should be tested for Benzoyl peroxide fastness (following desired method at laboratory level), before embarking on bulk production.


Need for innovation across entire supply chain of textiles has been identified as key area for sustainability. Textile wet processing segment is facing challenges in the area of substrate, machinery, dyestuff, chemical, process, fastness, statutory norms, etc. Home textiles have emerged as one of the most dynamic and promising segments in the global textile industry. The NOVATIC MD range of Vat dyes offers solution to satisfy stringent Benzoyl peroxide fastness demand in home textiles.


References:


1.      Chemicalland21.com

2.      En.wikipedia.org/wiki/Benzoyl_peroxide

3.      Indian Textile and Apparel Compendium, 2012 by Technopak Advisors Pvt. Ltd.

 

 

Image courtesy:

        chem.ucla.edu


Dr. Ashok Athalye is working as a General Manager, Technical Service in Atul Ltd. (Colors Division) Gujarat. Arindham Chakrabarti and Kaushik Bhatia are also working with Technical Service, Atul Ltd (Colors Division).