Title:Cellulose Nanofibril Characterisation
Speaker: Prof. Warren Batchelor
Time: May, 12, 10:00
Venue: Room 306, Papermaking Building D
[Abstract]
Nanocellulose has been a well-established area of research for several decades; however, progress in its production, application, and utilization has been hindered by the lack of measurement standards. Measurement techniques often involve significant trade-offs; for example, optical fiber analysers offer quick results but fail to detect most fibers in a nanocellulose sample. On the other hand, scanning electron microscopy (SEM) is slower due to sample preparation and image analysis requirements but is generally capable of imaging most fibrillar elements in a sample. This talk will report on the work of an ISO task group within the pulp and paper committee, TC6, working on developing nanocellulose measurement standards within ISO. The first part of the talk will focus on the group’s work and the process of identifying priorities for standard method development, with a particular focus on size measurement techniques. The second part of the talk will be focus on cellulose nanofibril size measurements using SEM. Finally, some of the recent work on characterisation within my own research group will be introduced. These include a new method combining mercury intrusion porosimetry (MIP) with X-ray micro-computed tomography (μCT) for CNF film structure characterization and cellulose nanofibril aspect ratio measurement using rheology.
Annouced by the School of Light Industry Science and Engineering
