Cellulose, being a biopolymer with superior properties, and its derivatives have earned its place in the spotlight during the past decades. A lot of research has been performed in an effort to compatibilize it with synthetic polymers. However, in order for compatibilization to be successful, modification of the cellulose surface may be necessary. One possible way to accomplish that is to utilize nanoparticles. Such nanoparticles, can be synthesized through RAFT-mediated surfactant free emulsion polymerization by employing the process of polymerization induced self-assembly (PISA) in water. Many synthetic monomers, such as methacrylates, acrylates and styrenes have been explored for this, resulting in nanosized latex particles with a variety of properties and shapes. For instance, latex nanoparticles with a cationic corona and PMMA core have been successfully employed in the stabilization of cellulose nanofibrils (CNFs). However, only a few cases of bio-based alternatives can be found that include hemicelluloses, fatty acids, etc. In the current study, monosaccharide-based monomers were used to synthesize bio-based macroRAFT agents with varying degrees of polymerization. Thereafter, the macroRAFTs were chain extended with a hydrophobic core in water and by using the PISA process, latex nanoparticles were formed. Finally, the resulting nanoparticles were characterized and their adsorption to nanocellulose surfaces was investigated.

Bio-based latex nanoparticles via RAFT emulsion polymerization for modification of biofibre surfaces

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.