As interest in ionic liquids has grown over the past few decades, so has the number of potential applications. Among these is Natural Fiber Welding (NFW), where the biopolymer matrix of natural fibers, such as cellulose, is disrupted by interactions with the ionic liquid. The degree of disruption (welding) can be altered through the manipulation of treatment factors such as time and temperature. The degree of welding has also been shown to significantly affect the material properties. While many studies have been dedicated towards the effect of variable NFW treatment on the material properties, the reported data is characteristic of the bulk material. The kinetic mechanisms and subsequent material property changes dominating at the dynamic solid/liquid interface has proven difficult to understand quantitatively. In this study we use Peak Force Quantitative Nanomechanical Mapping (PFQNM) atomic force microscopy (AFM) to analyze the unique interfaces produced during NFW. Through variation of parameters affecting the degree of welding, the post-mortem modulus and adhesion interfacial data are used to elucidate some of the micro-scale dissolution processes during NFW.

Post-mortem nanomechanical property mapping of natural fiber welded interfaces

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.