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X-ray studies on the morphology of zwitterionic polymers

Published online by Cambridge University Press:  03 March 2011

R. Montiel ,
J. Cardoso  and
O. Manero
R. Montiel
Affiliation:
Departamento de Física, UAM-1, A.P. 55-534, Iztapalapa 09340, México, D.F., Mexico
J. Cardoso
Affiliation:
Departamento de Física, UAM-1, A.P. 55-534, Iztapalapa 09340, México, D.F., Mexico
O. Manero
Affiliation:
Instituto de Investigaciones en Materiales, UNAM. A.P. 70-360, Coyoacán 04510, México, D.F., Mexico
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Abstract

Wide Angle X-ray Scattering (WAXS) and Small Angle X-ray Scattering (SAXS) were applied to elucidate the microstructure and morphology of two zwitterionic copolymers. The first system is a sulfobetaine derivative of poly(4-vinyl pyridine) with an ionic content of 10% (10% of the degree of quaternization). The copolymer is almost amorphous, with a small degree of crystallinity (10%). The second copolymer is a N-oxide derivative of the poly(N,N dimethyl aminoethyl methacrylate) highly crystalline (90%). The latter forms superstructures of globular shape with crystalline domains of coordinated polymer-salt systems. X-ray data are in accordance with those published by Castaño et al. [J. Mater. Res. 5, 654 (1990)]. These authors reported TEM micrographs of zwittcrionic systems, where clusters with grainy appearance were observed within the length of scale range found in this work. Models for the morphology of these copolymers are proposed for each use.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 8 , August 1995 , pp. 2106 - 2113
Copyright
Copyright © Materials Research Society 1995

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References

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