A kinetic study of the thermal and thermal oxidative degradations of new bridged POSS/PS nanocomposites

The thermal degradation of a series of three novel bridged polyhedral oligomeric silsesquioxanes (POSS)/polystyrene (PS) nanocomposites, at different POSS content (3%, 5% and 10%), was studied in both inert (flowing nitrogen) and oxidative (static air) atmospheres, in order to investigate the effect...

Full description

Saved in:
Bibliographic Details
Published in:Polymer degradation and stability 2013-12, Vol.98 (12), p.2564-2570
Main Authors: Blanco, Ignazio, Bottino, Francesco A., Cicala, Gianluca, Latteri, Alberta, Recca, Antonino
Format: Article
Language:English
Subjects:
Applied sciences
Bridged POSS
Composites
Degradation
Exact sciences and technology
Filler–polymer interactions
Forms of application and semi-finished materials
Nanocomposites
Polymer industry, paints, wood
Polymerization
Polystyrene resins
POSS/PS nanocomposites
Scanning electron microscopy
Styrenes
Technology of polymers
Thermal stability
Thermobalances
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:The thermal degradation of a series of three novel bridged polyhedral oligomeric silsesquioxanes (POSS)/polystyrene (PS) nanocomposites, at different POSS content (3%, 5% and 10%), was studied in both inert (flowing nitrogen) and oxidative (static air) atmospheres, in order to investigate the effects of this new dumbbell-shaped structure on the filler–polymer interaction and then on the thermal stability of the obtained materials. Nanocomposites were synthesized by in situ polymerization of styrene in the presence of POSS which has not polymerizable groups, aiming to obtain well dispersed POSS/PS systems. The actual filler concentration in the obtained nanocomposites was checked by 1H NMR spectroscopy. Scanning electron microscopy (SEM) and FTIR spectroscopy evidenced the presence of filler–polymer interactions. Degradations were carried out into a thermobalance, in the scanning mode, at various heating rates, and the characteristic parameters of thermal stability, namely temperature at 5% mass loss (T5%) and the activation energy (Ea) of degradation, of the various nanocomposites were determined. The results were discussed and interpreted.
ISSN:0141-3910
1873-2321
DOI:10.1016/j.polymdegradstab.2013.09.017