Current activities in measuring size distributions of Cellulose Nanomaterials Webinar

Current activities in measuring size distributions of Cellulose Nanomaterials Webinar

Webinar
Wednesday, August 19, 2020 to Wednesday, August 19, 2020

August 19th - 8AM - 10AM (ET)

This webinar will present current activities in measuring particle size and size distributions of cellulose nanocrystals (CNC) and cellulose nanofibrils (CNF), highlighting the successes, failures, challenges, and future efforts that are needed for the development of standardized methods.

Throughout the presentation the following topics will be highlighted:

  • The outcomes of a recent inter-laboratory comparison (ILC) on CNC particle size measurements (first half by Linda Johnston)
  • The difficulties of measuring CNF features (e.g., fibril width, branching) that could be used to define/describe CNFs as particles (second half by Robert Moon)
  • Recent efforts by the ISO/TC 6/TG 1 – “Cellulosic nanomaterials” working group to provide a framework for the characterization of CNF morphology 

In addition, a survey has been developed to assess standardization needs and priorities for particle size measurements of cellulose micro/nanomaterials including CNF, CMF, MFC, and other fibrillar "nanocellulose" products. The results of the survey will be used to drive CNF/CMF standards development, similar to a 2018 survey by ISO/TC 6/TG 1 on general cellulose nanomaterial characterization requirements that was subsequently used to provide direction of current standards development for both CNCs and CNFs.

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Johnston photo (2).jpg

Linda Johnston, Ph. D., is currently a Principal Research Officer in nanoscale measurement at the Metrology Research Centre (National Research Council Canada). Her research interests include the development and applications of multi-modal imaging and spectroscopy tools to study nanoscale materials and biological assemblies. Dr. Johnston's current projects focus on the characterization of cellulose nanocrystals (CNC), the development of CNC reference materials, and standards and quantification of nanomaterial surface functional groups. She is an adjunct professor from the Department of Chemistry and Biomolecular Sciences at the University of Ottawa and has co-authored over 160 refereed publications. Among her outreach activities include participation on ISO TC 229- Nanotechnologies, IUPAC Division V11, conference organization, and grant review panels.

rob moon.jpg

Robert Moon, PhD, is a Materials Research Engineer at the USDA Forest Service - Forest Products Laboratory, and is an Adjunct Professor in both the School of Materials Engineering (at Purdue University), and in the School of Materials Science and Engineering (at Georgia Institute of Technology). Since 2007 he has worked in the area of cellulose nanomaterials (CNMs), developing processing-structure-property relationships as they apply to various aspects of CNMs research, including CNM characterization and standards development. In the area of CNMs, he has 48 SCI ranked journal publications, 2 critical review, 2 patents, and a co-editor of 1 book. Dr. Moon’s current work in CNM characterization is in the development of semi-automatic image analysis tools for CNMs particle morphology measurement. Among his outreach activities in standards development he is the Convenor for the technical group ISO/TC 6/TG 1 – Cellulose nanomaterials, and is a member of ISO/TC 229-Nanotechnology.

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