DURABILITY OF CELLULOSE NANOMATERIALS UNDER INDUSTRY RELEVANT SHEAR STRESSES

Bradley P. Sutliff, Arit Das, Jeffrey Youngblood, Michael J. Bortner

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The effects of high-shear flow on cellulose nanocrystals (CNCs) were studied to characterize potential impacts of industrial processing on these materials. A microcapillary rheometer was employed to study the rheological characteristics of aqueous CNC suspensions at concentrations ranging from 1.5 wt% to 12.1 wt%. Increased cellulose content in the suspensions produced increased viscosities. A Sisko model was successfully fit to the data which display high shear Newtonian plateaus. Shear rate sweeps at these concentrations failed to fully reduce to a master curve. Furthermore, repeated testing of the same sample volume at nearly 800000 s-1 led to a permanent decrease in viscosity for all samples. Atomic Force Microscopy (AFM) probed CNC morphology to observe any changes in the CNC dimensions which may have contributed to this phenomenon. AFM results indicate significant decreases in both height and length of the CNCs after repeated testing at high shear rates.

Original languageEnglish
Title of host publicationSPE ANTEC 2020
Subtitle of host publicationThe Annual Technical Conference for Plastic Professionals
PublisherSociety of Plastics Engineers
Pages593-596
Number of pages4
ISBN (Electronic)9781713821182
StatePublished - 2020
Externally publishedYes
EventSPE ANTEC 2020: Annual Technical Conference for Plastic Professionals - Virtual, Online
Duration: Mar 30 2020May 5 2020

Publication series

NameAnnual Technical Conference - ANTEC, Conference Proceedings
Volume2

Conference

ConferenceSPE ANTEC 2020: Annual Technical Conference for Plastic Professionals
CityVirtual, Online
Period03/30/2005/5/20

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