Dual-ionic liquid functionalized cellulosic materials: Thermal, mechanical and conductive properties

Project Abstract

Cellulose, an inexpensive and renewable biomacromolecule, represents an intriguing synthetic foundation for new materials with task-specific properties. Here, we wish to report a synthetic route for functionalizing cellulose with a side chain containing two ionic liquid functional groups using azide-alkyne ‘click’ cyclization strategy, followed by quaternization of the two resulting heterocycles (1,2,3-triazole and imidazole). Through this functionalization strategy, the resulting cellulosic materials exhibited significant softening, with several glass transition (Tg) values observed below room temperature, indicating the amorphous nature of the materials, with the Tg dependent on both the length of the side chain and the counteranion used. Stress and strain at break of the materials were found by dynamic mechanical analysis to generally be in excess of 2 MPa and 250 %, respectively, indicating not only a high degree of mechanical robustness, but also elasticity. Enhancements in conductivity as high as 6-orders of magnitude were found when compared to native cellulose. In the end, cellulose can be utilized as a sustainable, foundational biopolymer in the preparation of new conductive materials.

Conference

Southeastern Regional Meeting of the American Chemical Society

October 19-22, 2022 (San Juan, Puerto Rico)

American Chemical Society

www.sermacs2022.org

Funding Type

Travel Grant

Academic College

Jesse D. Jones College of Science, Engineering and Technology

Area/Major/Minor

Biochemistry

Degree

Biochemistry

Classification

Senior

Name

Dr. Kevin Miller

Academic College

Jesse D. Jones College of Science, Engineering and Technology

This document is currently not available here.

Share

COinS