www.uhasselt.be
DSpace

Document Server@UHasselt >
Research >
Research publications >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/26215

Title: Rheo-optical Analysis of Functionalized Graphene Suspensions
Authors: Reddy, Naveen K.
Natale, Giovanniantonio
Prud'homme, Robert
Vermant, Jan
Issue Date: 2018
Citation: Langmuir, 3(6)
Status: In Press
Abstract: Wet processing of graphene sheets is a potentially interesting route for economically viable creation of graphene based composites. In the present work flow dichroism and small angle light scattering are used to investigate the dispersion of functionalized graphene sheets in suspension and their response to shear flow. In line with expectations from scaling theory at rest, the functionalized graphene sheets are present as Brownian, flat sheets, and there is no evidence of significant crumpling. More surprisingly, we find that the rate dependent orientation of these molecularly thin sheets can be described by numerical predictions for hard spheroidal sheets making quantitative predictions of the flow induced orientation possible. Further comparing the flow induced orientation of thick gold decahedra with the thin graphene sheets shows that, except for effects of polydispersity, the flow induced orientation is predicted well quantitatively. Adequate prediction of the effects of flow on orientation of graphene sheets makes it possible to design wet processed graphene based composite materials.
URI: http://hdl.handle.net/1942/26215
DOI: 10.1021/acs.langmuir.8b01574
ISSN: 0743-7463
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

Files in This Item:

Description SizeFormat
Published version - Version in Press1.4 MBAdobe PDF
Peer-reviewed author version1.09 MBAdobe PDF

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.