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Abstract

Structure-processing-property relationships for polymers are well established for thin film samples, but there is still a significant knowledge gap to fill in order to understand them in the context of 3D printed polymer samples. Yet, this knowledge related to the impact of the processing on the molecular organization is essential to enable its control, and eventually its modulation to reach targeted properties. Our research group is currently tackling this challenge by developing strategies to investigate the structure-processing-property relationships at play upon the additive manufacturing of polymeric materials, more specifically via direct-ink writing and hot-melt extrusion. Our efforts are focused on the development of a fundamental understanding of the phenomena occurring at a molecular level in 3D printed thermoplastic materials. To do so, we developed a streamlined experimental process where correlations between the rheological behavior of the materials to be printed, printing parameters, and resulting 3D printed samples properties (phases in presence via differential scanning calorimetry analyses and vibrational spectroscopy) are established. Such relationships enable us to better understand, and ultimately, to control the molecular organization of the polymers by deconvoluting the impact of the chemical structure of the materials from the processing parameters on the resulting properties of the 3D printed materials.

Biography

Audrey Laventure is an assistant professor and Canada Research Chair in Functional Polymer Materials in the Department of Chemistry at the University of Montreal (UdeM). She is also the Molecular Developments and New Processes Research Axe Leader of the new Institut Courtois at UdeM and one of the co-leaders of the Regroupement 6 – Molecules and Materials at IVADO. Audrey received her Ph.D. in 2017 from UdeM and completed her NSERC postdoctoral fellowship at the University of Calgary in 2020. Her research group focuses on establishing structure-processing-property relationships for functional polymer to propose rational design guidelines to integrate them in a variety of applications, including optoelectronic and energy conversion/storage devices.

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