Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session S21: Nanostructures and Metamaterials -- Functional Systems
11:15 AM–2:15 PM,
Thursday, March 7, 2019
BCEC
Room: 157B
Sponsoring
Unit:
DMP
Chair: Pankaj Jha, Caltech
Abstract: S21.00011 : Concentration Induced Dimensional Crossover in Nanocellulose Aerogel Morphology
1:15 PM–1:27 PM
Presenter:
Tim Kidd
(University of Northern Iowa)
Authors:
Tim Kidd
(University of Northern Iowa)
Byron Fritch
(University of Northern Iowa)
Deter Cox
(University of Northern Iowa)
Nanocellulose is an environmentally benign material with an array of potential applications. Using the freeze-drying technique, nanocellulose suspensions can easily be converted into ultra-light aerogels. These highly inert materials have a very high surface area to volume ratio, making them excellent templates for use as catalyst templates. The nanocellulose aerogels can be formed at various densities, and we have achieved materials that are more than 99.8% air in their final composition relying only on physical processing of microcellulose. The structure of these aerogels is highly dependent upon their composition. Up to 98% air concentration, the aerogels are formed by interlocking sheets that are highly two dimensional in character. At lower densities, these sheets become less common and the structure assumes more of a spiderweb consistency. At densities below 99% air concentration, the aerogels are made up almost entirely of one-dimensional strands. These changes in morphology are accompanied by new bonding characteristics including increased tensile strength and an inherent “stickiness” consistent with can der Waals coupling arising from the large number of nanoscale fibers.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700