Non-stoichiometric polyelectrolyte complexes of polyacrylic acid and cationic surfactantsстатья
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Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
Авторы:
Ibragimova Z.K. ,
Kasaikin V.A. ,
Zezin A.B. ,
Kabanov V.A.
Журнал:
Polymer Science U.S.S.R.
Том:
28
Номер:
8
Год издания:
1986
Издательство:
Elsevier B.V.
Местоположение издательства:
Netherlands
Первая страница:
1826
Последняя страница:
1833
Аннотация:
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. © 1987.
Добавил в систему:
Зезин Александр Борисович