Photodegradation of some low-density polyethylene-montmorillonite nanocomposites containing an oligomeric compatibilizer

Al Abdulla, Wael A., Hill, David J. T. and Whittaker, Andrew K. (2014) Photodegradation of some low-density polyethylene-montmorillonite nanocomposites containing an oligomeric compatibilizer. Journal of Applied Polymer Science, 131 18: 9423-9431. doi:10.1002/app.40788


Author Al Abdulla, Wael A.
Hill, David J. T.
Whittaker, Andrew K.
Title Photodegradation of some low-density polyethylene-montmorillonite nanocomposites containing an oligomeric compatibilizer
Journal name Journal of Applied Polymer Science   Check publisher's open access policy
ISSN 0021-8995
1097-4628
Publication date 2014-04-17
Sub-type Article (original research)
DOI 10.1002/app.40788
Open Access Status
Volume 131
Issue 18
Start page 9423
End page 9431
Total pages 9
Place of publication Hoboken, NJ, United States
Publisher John Wiley & Sons
Collection year 2015
Language eng
Abstract The photo-oxidation behavior at the exposed surfaces of maleated low-density polyethylene [LDPE poly(ethylene-co-butylacrylate-co-maleic anhydride) (PEBAMA)] and montmorillonite (MMT) composites was studied using attenuated total reflection Fourier transform infrared spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), and mechanical testing. Two different MMT clays were used with the maleated polyethylene, an unmodified clay, MMT, and an organically modified montmorillonite (OMMT) clay which was significantly exfoliated in the composite. The morphologies of sample films were examined by XRD and TEM. The results were explained in terms of the effect of the compatibilizing agent PEBAMA on the clay dispersion. It was found that the OMMT particles were exfoliated in the polymer matrix in the presence of the PEBAMA, whereas the MMT clay particles were agglomerated in this matrix. Both mechanical and spectroscopic analyses showed that the rates of photo oxidative degradation of the LDPE-PEBAMA-OMMT were higher than those for LDPE and LDPE-PEBAMA-MMT. The acceleration of the photo-oxidative degradation for LDPE-PEBAMA-OMMT is attributed to the effects of the compatibilizer and the organic modifier in the composite.
Keyword Clay
Compatibilization
Composites
Degradation
Polyolefins
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Wed, 07 May 2014, 08:27:00 EST by Mrs Louise Nimwegen on behalf of School of Chemistry & Molecular Biosciences