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Titolo:
Relationship between composition and structure in chitosan-based hybrid films
Autore:
Fuentes, S; Retuert, PJ; Ubilla, A; Fernandez, J; Gonzalez, G;
Indirizzi:
Univ Chile, Fac Sci, Dept Chem, Santiago, Chile Univ Chile Santiago Chile iv Chile, Fac Sci, Dept Chem, Santiago, Chile Univ Chile, Fac Sci, Dept Biol, Lab Dev & Cell Biol, Santiago, Chile Univ Chile Santiago Chile pt Biol, Lab Dev & Cell Biol, Santiago, Chile Univ Chile, Fac Phys & Math Sci, Dept Chem, Santiago, Chile Univ Chile Santiago Chile c Phys & Math Sci, Dept Chem, Santiago, Chile
Titolo Testata:
BIOMACROMOLECULES
fascicolo: 2, volume: 1, anno: 2000,
pagine: 239 - 243
SICI:
1525-7797(200022)1:2<239:RBCASI>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
GEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Gonzalez, G Univ Chile, Fac Sci, Dept Chem, Casilla 653, Santiago, Chile Univ Chile Casilla 653 Santiago Chile a 653, Santiago, Chile
Citazione:
S. Fuentes et al., "Relationship between composition and structure in chitosan-based hybrid films", BIOMACROMOL, 1(2), 2000, pp. 239-243

Abstract

Chitosan/poly (aminopropylsiloxane) hybrid films were obtained by blending3-(aminopropyl)siloxane oligomers (pAPS) with chitosan (CHI). The pAPS oligomers were prepared by the sol-gel method starting from 3-(aminopropyl)triethoxysilane. These hybrids were characterized by chemical, spectroscopic and morphological methods. Scanning electron micrographs of hybrid films of different composition revealed an organized microscopic pattern suggesting the existence of systematic interactions among their components. Comparisonof the thermal stabilities and X-ray diffraction patterns as well as FT-IRspectra of the films with those of the pure components revealed that nanocomposites were formed. Similar studies of films including lithium perchlorate, as a third component, showed that addition of certain amount of lithiumions affected the structure of the CHI/pAPS films. When addition of the lithium salt exceeded the homogeneous incorporation limit, a little excess generated anisotropically oriented patterns in the hybrid films.

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Documento generato il 25/11/20 alle ore 04:45:36