Photo-stabilization of EPDM-clay nanocomposites: effect of antioxidant on the preparation and durability
Article
Lonkar, Sunil P., Annamalai, A. Pratheep and Singh, Raj Pal. 2007. "Photo-stabilization of EPDM-clay nanocomposites: effect of antioxidant on the preparation and durability." Polymers for Advanced Technologies. 18 (11), pp. 891-900. https://doi.org/10.1002/pat.925
Article Title | Photo-stabilization of EPDM-clay nanocomposites: effect of antioxidant on the preparation and durability |
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ERA Journal ID | 1700 |
Article Category | Article |
Authors | Lonkar, Sunil P., Annamalai, A. Pratheep and Singh, Raj Pal |
Journal Title | Polymers for Advanced Technologies |
Journal Citation | 18 (11), pp. 891-900 |
Number of Pages | 10 |
Year | 2007 |
Publisher | John Wiley & Sons |
Place of Publication | United Kingdom |
ISSN | 1042-7147 |
1099-1581 | |
Digital Object Identifier (DOI) | https://doi.org/10.1002/pat.925 |
Web Address (URL) | https://onlinelibrary.wiley.com/doi/10.1002/pat.925 |
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. |
Keywords | ethylene-propylene-diene monomer; nanocomposites photo-degradation antioxidant and stabilization |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 340305. Physical properties of materials |
401609. Polymers and plastics | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | National Chemical Laboratory, India |
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