Relationship between Composition and Structure in Chitosan-based Hybrid Films
Author
dc.contributor.author
Fuentes, S.
Author
dc.contributor.author
Retuert de la Torre, Pedro Jaime
es_CL
Author
dc.contributor.author
Ubilla, A.
es_CL
Author
dc.contributor.author
Fernández Hidalgo, Juan
es_CL
Author
dc.contributor.author
González Moraga, Guillermo
es_CL
Admission date
dc.date.accessioned
2014-06-03T16:10:28Z
Available date
dc.date.available
2014-06-03T16:10:28Z
Publication date
dc.date.issued
2000
Cita de ítem
dc.identifier.citation
Biomacromolecules 2000, 1, 239-243
en_US
Identifier
dc.identifier.issn
1525-7797
Identifier
dc.identifier.other
DOI: 10.1021/bm0055091
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/119795
General note
dc.description
Artículo de publicación ISI
en_US
Abstract
dc.description.abstract
Chitosan/poly(aminopropylsiloxane) hybrid films were obtained by blending 3-(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.
Comparison of the thermal stabilities and X-ray diffraction patterns as well as FT-IR spectra 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 lithium ions
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.
en_US
Patrocinador
dc.description.sponsorship
Fondecyt (Grants 197-0730, 297-0004, and 1991006), Fundacio
´n Andes (Grant C12510), and the University of Chile
(DID-CSIC, Spain joined project).