Structure-Property Relationships of Ionic-Liquid-Functionalized Cellulosic Materials

Project Abstract

Cellulose is an underutilized, sustainable feedstock for the formation of electroactive materials. Recently, our research team has been able to successfully functionalize microcrystalline cellulose (MCC) with one (1,2,3-triazolium) or two (1,2,3-triazolium and imidazolium) ionic liquid groups with variable counteranion using an azide-alkyne ‘click’ cycloaddition strategy. Substitution of an ionic liquid group resulted in materials with amorphous behavior, improved flexibility, and conductivity values up to 10 -7 S/cm at 30 °C). In this presentation, we will show how changes in the nature of the substitutent on the ionic liquid(s) group changes thermal, mechanical and conductive properties. Substitutents vary from long chain alkyl to poly(ethylene glycol) to benzyl groups and more. In general, inclusion of a second ionic liquid (imidazolium) group lead to significant changes in thermal (T g < 0 °C) and mechanical (stress at break > 1 MPa) properties as the hydrogen bonding between glucose units was significantly disrupted.

Conference

National Meeting of the American Chemical Society

8/18/24-8/22/24

American Chemical Society

https://www.acs.org/meetings/acs-meetings/fall.html

Funding Type

Travel Grant

Academic College

Jesse D. Jones College of Science, Engineering and Technology

Area/Major/Minor

Chemistry/Biochemistry/Spanish

Degree

Bachelor of Science

Classification

Senior

Name

Kevin M. Miller, PhD.

Academic College

Jesse D. Jones College of Science, Engineering and Technology

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