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Can we turn prawn shells into firefighter gear?

Publication Date: 
Tuesday, March 18, 2025 - 17:45

Green materials expert Prof. Suprakas Sinha Ray says one of the most promising applications for chitin derivatives is in fireproof fibres and plastics, which could be incorporated into firefighter gear and building materials. 

Chitin is a hardy biological molecule that fortifies the exoskeletons of crustaceans and insects.  

“South Africa’s seafood industry processes tons of shellfish every year, producing mounds of chitinous waste that could be absorbed into our circular economy and repurposed,” says Ray. 

Through chemical engineering, chitin can be converted into chitosan, a polymer that can be woven into other common synthetic polymers, such as those used to produce fabrics or PVC pipes. Read more...

Contact Person

Prof Suprakas Sinha Ray

rsuprakas@csir.co.za

 


Chitin (left) can be isolated from crustacean waste collected at seafood production facilities. It can be chemically converted into chitosan (right), a polymer that could potentially be used to create fireproof fibres and plastics. CSIR researchers have optimised a commercial method of chitosan production using less chemicals, with less waste and ten-fold less water. 

Chitin and chitason