A seminar on

Sericin and its applications in textilesat

All India Seminar"THE INDIAN TEXTILE INDUSTRYMODERNIZATION, MAKE IN INDIA ETHNIC HANDLOOMS, FASHION SKILL

DEVELOPMENT AND FUTURISTIC TEXTILES"

ByMd. Vaseem Chavhan

Assistant Professor,Department of Textile & Fashion Technology, University,

Guntur, A.P.

Introduction• India is the second largest producer silk in the world.

• Silk consists of two types of proteins, silk fibroin and Sericin.

• Each year estimated 50,000 tons of unutilized sericin was discarded

in degumming wastewater worldwide.

• It would be beneficial for economy and environment if this sericin can be fully utilized as a green material

Silk Composition• Silk consists of two main proteins, sericin and fibroin, fibroin being

the structural center of the silk, and serecin being the sticky material surrounding it.

Fig -Raw Silk Microscope ViewFig- Silk Composition

Silk CompositionDifferent amino acids present in fibroin (mulberry silk)

Different amino acids present in sericin

SERICIN EXTRACTIONSilk sericin is recovered by three different processes from

different sources

high temperature high pressure (HTHP)IR heated machinealkaline and soap plus alkali (SPA) using membrane filtration technology.enzymes like Alkylase

Woven fabric yield the best quality as well as quantity of sericin while silk waste yield the poorest.

SERICIN PROPERTIES• Moisturizer

• UV protection (220nm absorbed by amino acids)

• Anti- oxidant

• Anti- bacterial activity

• Easy bio degradable & Non Toxicity.

Applications

Fabric Treatment• Sericin has been found to improve moisture regain and water

retention, and reduce electrical resistivity of cotton fibers by using crosslinking agents .

• Sericin modified polyster is five times more hygroscopic than untreated polyester .

• wool-treated fabrics(without using cross linking agent); a percentage of sericin 5% (w/w) improved the touch of wool fabrics, as well as the absorption of water .

Medical Textiles • Scaffolding- As the sericin based hydrogel has the three

dimensional cross linking property.

• The modified cotton fibers treated with sericin useful for the development of gauze and pad dressing .

• Silk sericin has good wound healing properties. Its component also improves the attachment of cultured human skin fibroblast and corneal wound healing.

Diapers • Sericin has the property of gel formation. A blended hydrogel

made of sericin and fibroin and PVA is said to have excellent moisture absorbing and desorbing properties and elasticity.

• Serine is major component of sericin protein which play major role in wound healing process.

Filter media• The filtration property of fibrous filter can be enhanced by

coating with Sericin. • Filter media can be treated with an antioxidant coating for

example the cigarette filter having Thione Antioxidant Complex to reduce amount of free radical damage .

• Silk sericin could be coated onto nylon and polyster fibers and has a strong potential to be used for indoor air filters to reduce the amount of toxic free radicals, fungi and micrococcus type of bacteria.

• The PMA-SS (poly methyl acrylate-silk sericin) nanospheres are considered to have potential applications in wastewater treatment for the removal of heavy metal ions such as trivalent chromium species

Thank You!!