The mixing effect of amine and carboxyl groups on electrorheological properties and its analysis by in situ FT-IR under an electric field

Title
The mixing effect of amine and carboxyl groups on electrorheological properties and its analysis by in situ FT-IR under an electric field
Authors
고영건이현정박용성우재완최웅수
Keywords
ER fluids; Chitosan; Alginic acid; ER properties; FT-IR
Issue Date
2013-10
Publisher
Physical chemistry chemical physics : PCCP
Citation
VOL 15, NO 39, 16527-16532
Abstract
Herein, the mixing effect of amine and carboxyl groups on electrorheological (ER) properties has been presented with the chitosan and alginic acid dispersed suspensions. Chitosan (for the amine group) and alginic acid (for the carboxyl group) are used to investigate the mixing effect of the amine and carboxyl groups on ER properties with the control of their mixing ratio in the silicone oil. The surface-chemical structure of the mixture of the chitosan and alginic acid particles in the silicone oil is demonstrated by in situ Fourier transform infrared (FT-IR) spectroscopy at various electric fields for the first time. This study focuses on whether the mixture of chemical groups in the ER fluid can promote ER properties or not, and in situ FT-IR analysis of the interface between ER particles in the silicone oil at various DC electric fields. The ER fluids exhibited the increase of the yield stress values with the increase of the counter group addition up to the weight ratio of 50: 50 (chitosan: alginic acid). A noteworthy result is that the mixing effect of the amine and carboxyl groups resulting in enhanced ER properties is clearly proved. In the in situ FT-IR study, the complex form of amine and carboxyl groups of particles in the ER fluid was confirmed under the electric field.
URI
http://pubs.kist.re.kr/handle/201004/45877
ISSN
14639076
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE