The Effect of Processing Parameters of the Vinyl Ester Matrix Nanocomposites Based On Layered Silicate on the Level of Exfoliation

Authors: A. I. Alateyah, H. N. Dhakal, Z. Y. Zhang

Abstract:

The study of the effect of the processing parameters on the level of intercalation between the layered silicate and polymer of two different methodology took place. X-ray diffraction, Scanning Electron Microscopy, Energy Dispersive X-ray Spectrometry, and Transmission Electron Microscopy were utilized in order to examine the intercalation level of nanocomposites of both methodologies. It was found that drying the clay prior to mixing with the polymer, mixing time and speed, degassing time, and the curing method had major changes to the level of distribution of the nanocomposites structure. In methodology 1, the presence of aggregation layers was observed at only 2.5 wt.% clay loading whereas in methodology 2 the presence of aggregation layers was found at higher clay loading (i.e. 5 wt.%).

Keywords: Vinyl ester, nanocomposites, layered silicate, characterisations, aggregation layers, intercalation, exfoliation.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1089323

References:

[1] T. Yu, Y. Li, and J. Ren, "Preparation and properties of short natural fiber reinforced poly(lactic acid) composites," Transactions of Nonferrous Metals Society of China, vol. 19, Supplement 3, pp. s651-s655, 12// 2009.
[2] A. I. Alateyah, H. N. Dhakal, and Z. Y. Zhang, "Processing, Properties, and Applications of Polymer Nanocomposites Based on Layer Silicates: A Review " Advances in Polymer Technology, vol. 32, 2013.
[3] J. Z. Liang and C. B. Wu, "Fractal characterization of impact fracture surface of polypropylene nanocomposites," Advances in Polymer Technology, 2012.
[4] S. Wang, Y. Huang, M. Zheng, Y. Wei, S. Huang, and Y. Gu, "Synthesis of MS (M= Zn, Cd, and Pb)–chitosan nanocomposite film via a simulating biomineralization method," Advances in Polymer Technology, vol. 30, pp. 269-275, 2011.
[5] A. B. Morgan and J. W. Gilman, "Characterization of polymer-layered silicate (clay) nanocomposites by transmission electron microscopy and X-ray diffraction: A comparative study," Journal of Applied Polymer Science, vol. 87, pp. 1329-1338, 2003.
[6] H. Chen, M. Zheng, H. Sun, and Q. Jia, "Characterization and properties of sepiolite/polyurethane nanocomposites," Materials Science and Engineering: A, vol. 445–446, pp. 725-730, 2007.
[7] J. L. Feijoo, L. Cabedo, J. Gimenez, M. Lagaron, and J. J. Saura, "Development of amorphous PLA-montmorillonite nanocomposites," Journal of Materials Science, vol. 40, pp. 1785-1788, 2005.
[8] M. Okamoto, Polymer/layered silicate nanocomposites. Shrewsbury: Rapra Technology Limited, 2003.
[9] R. Suprakas Sinha and O. Masami, "Polymer/layered silicate nanocomposites: a review from preparation to processing," Prog. Polym. Sci, vol. 28, pp. 1539–1641, 2003.
[10] H. W. Cui and G. B. Du, "Preparation and characterization of exfoliated nanocomposite of polyvinyl acetate and organic montmorillonite," Advances in Polymer Technology, 2012.
[11] G. M. Kim, D. H. Lee, B. Hoffmann, J. Kressler, and G. Stöppelmann, "Influence of nanofillers on the deformation process in layered silicate/polyamide-12 nanocomposites," Polymer, vol. 42, pp. 1095-1100, 2001.
[12] I.-J. Chin, T. Thurn-Albrecht, H.-C. Kim, T. P. Russell, and J. Wang, "On exfoliation of montmorillonite in epoxy," Polymer, vol. 42, pp. 5947-5952, 2001.
[13] M. Alexandre and P. Dubois, "Polymer-layered silicate nanocomposites: preparation, properties and uses of a new class of materials," Materials Science and Engineering: R: Reports, vol. 28, pp. 1-63, 2000.
[14] E. P. Giannelis, "Polymer Layered Silicate Nanocomposites," Advanced Materials, vol. 8, pp. 29-35, 1996.
[15] A. I. Alateyah, H. N. Dhakal, and Z. Y. Zhang, "Mechanical and thermal properties characterisation of vinyl ester matrix nanocomposites based on layered silicate," World Academy of Science, Engineering and Technology, vol. 81, pp. 1-8, 2013.
[16] A. I. Alateyah, H. N. Dhakal, and Z. Y. Zhang, "Water absorption behaviour, mechanical and thermal properties of vinyl ester matrix nanocomposites based on layered silicate," Polymer-Plastics Technology and Engineering, vol. Accepted, 2013.
[17] C. A. Ittner Mazali and M. I. Felisberti, "Vinyl ester resin modified with silicone-based additives: III. Curing kinetics," vol. 45, pp. 2222-2233, 2009.
[18] I. Southern Clay Products. (11). Cloisite® 10A. Available: http://www.scprod.com/product_bulletins/PB%20Cloisite%2010A.pdf
[19] S. Sinha Ray, K. Yamada, M. Okamoto, and K. Ueda, "New polylactide-layered silicate nanocomposites. 2. Concurrent improvements of material properties, biodegradability and melt rheology," Polymer, vol. 44, pp. 857-866, 2003.
[20] J.-H. Chang, Y. U. An, D. Cho, and E. P. Giannelis, "Poly (lactic acid) nanocomposites: comparison of their properties with montmorillonite and synthetic mica (II)," Polymer, vol. 44, pp. 3715-3720, 2003.
[21] J. H. Chang and Y. U. An, "Nanocomposites of polyurethane with various organoclays: Thermomechanical properties, morphology, and gas permeability*," Journal of Polymer Science Part B: Polymer Physics, vol. 40, pp. 670-677, 2002.