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Ionic complexes of polyacids and cationic surfactants
Tolentino, Ainhoa; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; Alla Bedahnane, Abdelilah; Muñoz Guerra, Sebastián
Universitat Politècnica de Catalunya. Departament d'Enginyeria Química; Universitat Politècnica de Catalunya. POL - Polímers
Comb-like ionic complexes were prepared from polyuronic acids (pectinic and alginic acids) and alkyltrimethylammonium surfactants bearing linear alkyl chains with 18, 20 and 22 carbon atoms. In the condensed state, these complexes were able to self-assemble in ordered structures which were thermally stable up to ~200ºC. The complexes were analysed by DSC and WAXS/SAXS and compared to their analogous made from poly(γ-glutamic acid). They all adopt a biphasic layered structure in which the main chain and the alkyl side chain alternate with a nanometric periodicity. Alkyl side chains were partially crystallized in these complexes and they show reversible melting at temperatures within the 60-80ºC range depending on the length of the polymethylene segment.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
Alginic acid
Comb-like ionic complexes
Pectinic acid
Poly(gamma glutamic acid)
Polyelectrolyte surfactant complexes
Polygalacturonic acid
Polyuronic acid
Macromolècules
Polímers
info:eu-repo/semantics/publishedVersion
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