Functional Polymer Coating in Specialty Textile Materials
| Dates: | 21 June 2017 |
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| Times: | 11:00 - 12:00 |
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| What is it: | Seminar |
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| Organiser: | Department of Materials |
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| How much: | Free |
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| Speaker: | Prof. Nikhil K. Singha |
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Abstract: During last few decades a significant amount of research work was conducted by the researchers to generate advanced coating materials that have multifunctional ability like
superhydrophobicity, antimicrobial activity, self-healing activity etc. By adopting the nanotechnology one can achieve all the above mentioned smart properties. This talk will focus on
methodology of superhydrophobic and antimicrobial coating materials utilizing functional polymers. In textile industries, cotton fibres are extensively used to prepare medical and health
care products, non-implantable surgical materials etc. due to its high sweat absorbing ability and comfort. But due to this high water absorbing capacity, the cotton fibre is very much
susceptible to microbial attack. To prevent this, cotton fibres were dipped in antimicrobial natural rubber latex (AMNRL) which was prepared by mixing NRL with modified chitosan
stabilized silver nanoparticles at pH = 7.4. After that the dip coated fibres were UV cured using thiol-ene chemistry. This technique allows us to prepare a pre-vulcanized hydrophobically
modified antimicrobial NRL coated cotton fibre which is free from toxic sensitising and allergic processing additives. Compared to conventional sulphur curing system it is a low energy
consuming process. AMNRL coated cotton fibre exhibits superior antimicrobial activity and it is non-toxic against fibroblast cell. We have also prepared functional block copolymers (BCPs)
based on fluoroacrylates and POSS via Reversible Addition-Fragmentation Chain Transfer Polymerization (RAFT) polymerization. This BCP was applied over the cotton fabric which showed
much improved hydrophobicity (water contact angle >130°).
Speaker
Prof. Nikhil K. Singha
Role: Rubber Technology Centre,
Organisation: Indian Institute of Technology Kharagpur, India.
Travel and Contact Information
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E-Floor Meeting Room, James Lighthill Building
