Polyimide-silica nanocomposites: spectroscopic, morphological and mechanical investigations

Polyimide/silica hybrids were prepared by a sol–gel process and were evaluated in terms of curing behaviour, morphology and mechanical properties at different temperatures. The spectroscopic examinations showed that the presence of inorganic phase accelerates both the removal of the solvent and the...

Full description

Saved in:
Bibliographic Details
Published in:Polymer (Guilford) 2004-03, Vol.45 (5), p.1697-1706
Main Authors: Musto, Pellegrino, Ragosta, Giuseppe, Scarinzi, Gennaro, Mascia, Leno
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Exact sciences and technology
Forms of application and semi-finished materials
FTIR
Nanocomposites
Polyimide
Polymer industry, paints, wood
Technology of polymers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Polyimide/silica hybrids were prepared by a sol–gel process and were evaluated in terms of curing behaviour, morphology and mechanical properties at different temperatures. The spectroscopic examinations showed that the presence of inorganic phase accelerates both the removal of the solvent and the concomitant imidization reaction. Two types of morphology for the silica phase were obtained by tailoring the composition of the precursor solution mixture. The mechanical properties were found to be strongly dependent on the system morphology. The largest increase in rigidity and strength properties were achieved when the two phases were co-continuous. Furthermore, these nanocomposites exhibited better mechanical properties also at high temperatures, thus extending the possible service temperature range of the polyimides.
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2003.12.044