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Multifunctional materials from nanochitin

Grant number: 19/00370-9
Support type:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): May 01, 2019
Effective date (End): September 12, 2019
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Principal Investigator:Watson Loh
Grantee:Caio Gomide Otoni
Supervisor abroad: Orlando Jose Rojas Gaona
Home Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Local de pesquisa : Aalto University, Finland  
Associated to the scholarship:17/07013-1 - Surface modifications and polyelectrolyte adsorption via layer-by-layer onto cellulose nanofibers for the production of antimicrobial aerogels, BP.PD

Abstract

This research falls within the current scenario involving sustainable and multifunctional materials. Overall, it deals with the controlled deconstruction of the hierarchical architecture of chitin into nanochitin (NCh), which merges the inherent features of pristine chitin (renewability, biodegradability, biocompatibility, and biological activity, to mention a few) and the peculiarities of anisotropic nano-objects, such as high aspect ratio and high specific surface area. This will be allowed by the partial deacetylation and TEMPO-mediated oxidation followed by mechanical disintegration of never-dried chitin from marine-originated waste. Dispersions of cationic and anionic NCh in water will be studied and used as precursors for the production of ultralight aerogels intended for antimicrobial purposes. The potential of TEMPO-oxidized NCh to serve as ionic crosslinking points to partially deacetylated NCh in order to provide the all-chitin aerogels with wet resilience will be investigated. The research paves the route for broadening the range of applications of NCh as building blocks of novel multifunctional materials.

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