Please use this identifier to cite or link to this item: https://doi.org/10.1016/0032-3861(96)87636-1
Title: Surface characterization of colloidal polypyrrole particles synthesized with reactive steric stabilizers using X-ray photoelectron spectroscopy
Authors: Simmons, M.R.
Chaloner, P.A.
Armes, S.P.
Kang, E.T. 
Tan, K.L. 
Loh, F.C. 
Keywords: Polypyrrole
Steric stabilization
X-ray photoelectron spectroscopy
Issue Date: Jun-1996
Citation: Simmons, M.R., Chaloner, P.A., Armes, S.P., Kang, E.T., Tan, K.L., Loh, F.C. (1996-06). Surface characterization of colloidal polypyrrole particles synthesized with reactive steric stabilizers using X-ray photoelectron spectroscopy. Polymer 37 (13) : 2743-2749. ScholarBank@NUS Repository. https://doi.org/10.1016/0032-3861(96)87636-1
Abstract: X-ray photoelectron spectroscopy has been used to characterize the surfaces of polypyrrole colloids synthesized using reactive steric stabilizers based on statistical copolymers of 2-(dimethylamino)ethyl methacrylate. Three different copolymer stabilizers, containing 2-vinylpyrrole, 3-vinylthiophene and 2,2′-bithiophene-5-methyl methacrylate graft sites respectively, were examined. In each case, the grafted copolymer stabilizer was detected at the surface of the polypyrrole particles, which is consistent with the accepted steric stabilization mechanism of colloid stability. With the bithiophene-based copolymer stabilizer, the sulfur atoms in the bithiophene groups acted as unique elemental markers, and thus aided the detection and quantification of the stabilizer component. The atomic ratio of nitrogen to sulfur as determined by X.p.s. for this polypyrrole colloid was significantly higher than that observed for the corresponding copolymer stabilizer. This excess surface nitrogen was attributed to the polypyrrole component and is consistent with the relatively high solid-state conductivity (ca. 10-1 to 1O0 S cm-1) measured on compressed pellets of this dried colloid. The presence of the other two copolymer stabilizers at the surface of the polypyrrole particles is less obvious but can be verified from close inspection and comparison of the C1s and N1s core-line spectra of the two polypyrrole colloids, their corresponding copolymer stabilizers and a polypyrrole 'bulk powder' control sample respectively. Crown copyright © 1996 Published by Elsevier Science Ltd.
Source Title: Polymer
URI: http://scholarbank.nus.edu.sg/handle/10635/91724
ISSN: 00323861
DOI: 10.1016/0032-3861(96)87636-1
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

8
checked on Sep 19, 2018

WEB OF SCIENCETM
Citations

8
checked on Sep 3, 2018

Page view(s)

47
checked on Aug 24, 2018

Google ScholarTM

Check

Altmetric


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