Synthesis and Solution Properties of Ampholytic Acrylamide Ionomers
作者:
J.C. Salamone,
I. Ahmed,
E.L. Rodriguez,
L. Quach,
A.C. Watterson,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1988)
卷期:
Volume 25,
issue 5-7
页码: 811-837
ISSN:0022-233X
年代: 1988
DOI:10.1080/00222338808053400
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The synthesis and semiconcentrated and dilute solution properties of two series of ampholytic acrylamide ionomers, poly(acrylamide MPTMA/AMPS) and poly(acrylamide METMA/MES), are reported as a function of the ionic content and added salt concentration. The viscosity dependence on shear rate was measured with a cone/plate Brookfield viscometer for sermiconcentrated solution and with a Cannon-Ubbelohde four-bulb shear dilution capillary viscometer for dilute solution at 25 ± 0.1°C. The two series of ampholytic acrylamide ionomers showed a characteristic pseudoplastic shear-thinning behavior under both conditions. The semiconcentrated solution viscosity parametersmandnin the power-law model, η =mγn-1, were determined and found to be functions of the ionic content. The viscosity at selected shear rates was found to be a complex function of the salt concentration. The intrinsic viscosity [η] was determined and compared with molecular parameters determined by light scattering under identical conditions. The dilute-solution properties of the ampholytic ionomers were found to resemble the properties of neutral polyacrylamide previously reported in the literature.
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