Photo-stabilization of EPDM-clay nanocomposites: effect of antioxidant on the preparation and durability

Lonkar, S.P., Kumar, A.P. and Singh, R.P. (2007) Photo-stabilization of EPDM-clay nanocomposites: effect of antioxidant on the preparation and durability. Polymers For Advanced Technologies, 18 11: 891-900. doi:10.1002/pat.925

Author Lonkar, S.P.
Kumar, A.P.
Singh, R.P.
Title Photo-stabilization of EPDM-clay nanocomposites: effect of antioxidant on the preparation and durability
Journal name Polymers For Advanced Technologies   Check publisher's open access policy
ISSN 1042-7147
Publication date 2007-11
Year available 2007
Sub-type Article (original research)
DOI 10.1002/pat.925
Volume 18
Issue 11
Start page 891
End page 900
Total pages 10
Place of publication West Sussex, United Kingdom
Publisher John Wiley and Sons
Collection year 2008
Language eng
Formatted abstract
The present study is to examine the photo-stabilization effect of an antioxidant on the photo-oxidation of ethylene-propylene-diene monomer (EPDM)-clay nanocomposites. During the preparation of EPDM-clay nanocomposites via melt processing antioxidants are usually incorporated along with clay, which allows phenolic antioxidant molecules to get adsorbed onto acidic clay platelets and their interaction with metallic impurities reduces the stabilizing efficiency of the antioxidant. The nanocomposites were obtained by solution dispersion followed by melt compounding of EPDM and organophilic montmorillonite (OMMT). The samples were characterized by conventional tools such as X-ray diffraction (XRD), Fourier Transform Infra Red (FT-IR) spectroscopy, and thermo-gravimetric analysis (TGA). It was found, upon photo-irradiation (λ > 290 nm) studies by following the changes in functional groups and surface morphology, that photo-degradation was lowered by the antioxidant and the efficiency of the antioxidant could be improved by initial incorporation of antioxidant in the EPDM matrix. In EPDM-clay nanocomposites, a stabilizing activity of the antioxidant was observed above some threshold concentration of the antioxidant. The relationship between the nanoclay reinforcement and stabilizing efficiency in terms of photo-oxidation and surface morphology for their applicability are discussed. The methodology adopted for this study is also justified through our observation.
Keyword Ethylene propylene diene monomer
Nanocomposites photo degradation
Antioxidant and stabilization
Ethylene-propylene-diene monomer; Nanocomposites photo-degradation antioxidant and stabilization
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
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Created: Tue, 09 Apr 2013, 16:24:31 EST by Pratheep Kumar Annamalai on behalf of Aust Institute for Bioengineering & Nanotechnology