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Interphases, gelation, vitrication, porous glasses and the generalized Cauchy relation: epoxy/silica nanocomposites
- Source :
- New Journal of Physics, 11(2), 023015. Bristol, United Kingdom: Institute of Physics (2009).
- Publication Year :
- 2009
-
Abstract
- The generalized Cauchy relation (gCR) of epoxy/silica nanocomposites does not show either the chemically induced sol–gel transition or the chemically induced glass transition in the course of polymerization. Astonishingly, by varying the silica nanoparticles’ concentration between 0 and 25 vol%in the composites, the Cauchy parameter A of the gCR remains universal and can be determined from the pure epoxy’s elastic moduli. Air-filled porous silica glasses are considered as models for percolated silica particles. A longitudinal modulus versus density representation evidences the aforementioned transition phenomena during polymerization of the epoxy/silica nanocomposites. The existence of optically and mechanically relevant interphases is discussed.
- Subjects :
- Condensed Matter::Soft Condensed Matter
Science des matériaux & ingénierie [C09] [Ingénierie, informatique & technologie]
Physique [G04] [Physique, chimie, mathématiques & sciences de la terre]
Materials science & engineering [C09] [Engineering, computing & technology]
Physics [G04] [Physical, chemical, mathematical & earth Sciences]
Physics::Optics
Astrophysics::Earth and Planetary Astrophysics
Condensed Matter::Disordered Systems and Neural Networks
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- New Journal of Physics, 11(2), 023015. Bristol, United Kingdom: Institute of Physics (2009).
- Accession number :
- edsair.od......2658..d89c268acbb0b2c9d2beab27319bc524