Thermal and Structural Study of Mesomorphic Dodecylammonium Carrageenates (CROSBI ID 151464)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Vinceković, Marko ; Pustak, Anđela ; Liu, F. ; Ungar, Goran ; Tušek-Božić, Ljerka ; Bujan, Marija ; Šmit, Ivan ; Filipović-Vinceković, Nada
engleski
Thermal and Structural Study of Mesomorphic Dodecylammonium Carrageenates
Structural characteristics and thermal stability of a series of dodecylammonium carrageenates formed by stoichiometric complexation of dodecylammonium chloride and differently charged carrageenans (k-, i- and λ -carrageenan, respectively) were investigated. IR spectral analysis confirmed the electrostatic and hydrogen bond interactions between the dodecylammonium and carrageenan species. X-ray diffraction experiments show increased ordering in the complexes compared to that in the parent carrageenans. Dodecylammonium carrageenates have a layer structure, in which a polar sublayer contains two layers of carrageenan chains and a nonpolar sublayer consists of fully interdigitated conformationally disordered dodecylammonium chains electrostatically attached to the carrageenan backbone. The major factor that determines the dodecylammonium carrageenate structure is cationic surfactant, while the carrageenans moiety plays a major role in determining thermal properties.
carrageenan ; dodecylammonium chloride ; complexation ; thermal analysis ; SAXS
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Podaci o izdanju
341 (1)
2010.
117-123
objavljeno
0021-9797
10.1016/j.jcis.2009.09.021
Povezanost rada
Kemija, Poljoprivreda (agronomija)