Macroscopic-microscopic mechanical relaxation behavior of hybrid organic-inorganic materials

The mechanical properties of transparent hybrid organic–inorganic nanocomposites made from siloxane and zirconium oxopolymers are investigated at two different length scales. The complex interface that associates the two phases is made of covalent ZrOSi bonds and hydrogen bonding. The rubbery prop...

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Bibliographic Details
Published in:Journal of polymer science. Part B, Polymer physics Polymer physics, 2001-03, Vol.39 (6), p.645-650
Main Authors: Judeinstein, Patrick, Rault, Jacques, Alonso, Bruno, Sanchez, Clément
Format: Article
Language:English
Subjects:
Analytical chemistry
Applied sciences
Chemical Sciences
Composites
creep
deuterium NMR
Exact sciences and technology
Forms of application and semi-finished materials
nanocomposites
Polymer industry, paints, wood
Technology of polymers
viscoelasticity
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Summary:The mechanical properties of transparent hybrid organic–inorganic nanocomposites made from siloxane and zirconium oxopolymers are investigated at two different length scales. The complex interface that associates the two phases is made of covalent ZrOSi bonds and hydrogen bonding. The rubbery properties studied by creep and recovery present specific behaviors in comparison with model elastomers. This is a result of the complex crosslinking units. The stress relaxation phenomenon has been studied at the molecular scale by 2H quadrupolar NMR. During stress relaxation, the anisotropy of the molecular motion decreases slowly. This study demonstrates the straightforward relationship existing between the macroscopic and microscopic relaxation phenomena. © 2001 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 39: 645–650, 2001
ISSN:0887-6266
1099-0488
DOI:10.1002/1099-0488(20010315)39:6<645::AID-POLB1038>3.0.CO;2-U