Biobased block copolymers (BCPs) are interesting candidates to replace traditional coil-coil BCP analogues with enhances self-assembly and effective downsizing of feature nanostructures for future sustainable materials. We introduce biosynthetically produced oligocellulose as a crystallizing rod-like block to act as highly immiscible block with small size to serve as high χ low N BCP with wanted properties. The BCPs are synthetizes from ready (end-functionalized) sub-blocks using copper alkyne azide cycloaddition witch creates a triazole ring at the interface between the different blocks. Triazole ring N-alkylation introduces single point charge to the ring and at the interface between blocks. Newly formed ionic moieties reorient formed structures utilizing electrostatic interactions effective long range.<br/>In this study, we demonstrate synthesis and full characterization of oligocellulose-elastomer -and oligopeptide rod-coil diblock copolymers. With highly crystallizing and hydrogen bond self-associating oligocellulose rod blocks, liquid crystalline BCP properties are expected and highly favorable for orienting self-assembled nanostructures. The concepts introduced in this work can be widely used among biopolymer advanced material processing towards future cellulose based BCP high-end applications.

Rod-coil oligocellulose-elastomer- and polypeptide diblock copolymers for advanced biobased nanomaterials

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.