Non-stoichiometric polyelectrolyte complexes of polyacrylic acid and cationic surfactants
- 31 December 1986
- journal article
- Published by Elsevier BV in Polymer Science U.S.S.R.
- Vol. 28 (8), 1826-1833
- https://doi.org/10.1016/0032-3950(86)90399-0
Abstract
The macromolecular reactions of cationic surfactants with polyacrylic acid have been studied. In acid media (pH 3) as a result of these reactions non-stoichiometric PECs of constant composition insoluble in aqueous media form. In neutral and weakly alkaline media (pH ⩾ 7) where the polyacid units are heavily ionized both water-soluble non-stoichiometric and stoichiometric insoluble PECs may form. The conditions for the formation of water-soluble non-stoichiometric PECs as a function of the length of the non-polar radical of the SA molecule have been studied. It is shown that increase in the length of the non-polar radical reduces the values of the composition of the mixture for which soluble non-stoichiometric PECs form. The influence of the content of a low molecular weight electrolyte on the formation of non-stoichiometric water-soluble PECs has been studied.Keywords
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