This paper deals with the effect of clay addition on improving the mechanical properties of epoxy polymer and glass fiber-reinforced epoxy-clay hybrid composites. The clays used in the present system were alkyl ammonium treated montmorillonite (MMT) based organoclay (OC) and unmodified MMT clay (UC). The OC and UC were added individually to epoxy polymer and glass fiber-reinforced epoxy composites. Structure and morphology of epoxy filled with OC and UC were examined by X-ray diffraction (XRD) and transmission electron microscope (TEM) techniques. It is observed that the clay nanolayer dispersion takes place in a polymer matrix filled with OC particles. However, the UC filled composites show the formation of micro-composites. The effects of clay addition (1—3%, 5% and 10% by weight) in epoxy polymer shows that OC filled composites possess enhanced tensile strength over UC filled composites. A similar result is observed in the OC filled glass fiber-reinforced epoxy composites. Dynamic mechanical analysis (DMA) and thermogravimetry analysis (TGA) of hybrids show that the addition of OC increases the thermal properties of epoxy-glass fiber more than that of UC filled hybrids.
Pinnavaia, T.J. (1983). Intercalated Clay Catalyst , Science, 4595: 365-371.
2.
Fukushima, Y. , Okada, A., Kawasumi, M., Kurachi, T. and Kamigaito, O. (1988) Swelling Behavior of Montmorillonite by Poly-6-amide, Clay Minerals, 23: 27-34.
3.
Usuki, A., Kojima, Y., Kawasumi, M., Okada, A., Fukushima, Y., Kurachi, T. and Kamaigaito, O. (1993). Synthesis of Nylon-6-clay Hybrid, Journal of Materials Research, 8: 1179-1183.
4.
Usuki, A., Kawasumi, M., Kojima, Y., Okada, A., Kurachi, T. and Kamigaito, O. (1993). Swelling Behaviour of Montmorillonite Cation Exchanged for ω-Amino Acid by ε-Caprolactum, Journal of Materials Research, 8: 1174-1148.
5.
Kojima, Y., Usuki, A., Kawasumi, M., Okada, A. and Kurauchi, T. (1993). Synthesis of Nylon-6-clay Hybrid by Montmorillonite Intercalated with ε-Caprolactum, Journal of Polymer Science Part A: Polymer Chemistry, 31: 983-986.
6.
Kojima, Y., Usuki, A., Kawasumi, M., Okada, A., Kurachi, T. and Kamigaito, O. (1993). One-Pot Synthesis of Nylon-6-clay Hybrid, Journal of Polymer Science Part A: Polymer Chemistry, 31: 1755-1758.
7.
Alaxandre, M. and Dubois, P. (2000). Polymer-Layered Silicate Nanocomposites: Preparation, Properties and Uses of a New Class of Materials , Materials Science and Engineering, 28: 1-63.
8.
Giannelis, E.P. , Krishnamurthy, R. and Manias, E. (1999). Polymer-Silica Nanocomposites: Model System for Confined Polymers and Polymer Brushes, Advances in Polymer Science, 118: 108-147.
9.
Vaia, R.A., Teukolsky, R.K. and Giannelis, E.P. (1994). Interlayer Structure and Molecular Environment of Alkylammonium Layered Silicates, Chemistry of Materials , 6: 1017-1022
10.
Lagaly, G. (1986). Interactions of Akylamines with Different Types of Layered Compounds, Solid State Ionics, 22: 43-51.
11.
Pinnavaia, T.J. and Beall, G.W. (2000). Polymer-Clay Nanocomposites , John Wiley and Sons, New York .
12.
Park, S.J., Seo, D. II. and Lee, J.R. (2002). Surface Modification of Montmorillonite on Surface Acid-Base Characteristics of Clay and Thermal Stability of Epoxy/Clay Nanocomposites, Journal of Colloid and Interface Science, 251: 160-165.
13.
Ray, S.S. and Okomato, M. (2003). Polymer/Layered Silicate Nanocomposites: A Review from Preparation to Processing, Progress in Polymer Science, 28: 1539-1641.
14.
Lee, H. and Neville, K. (1957). Epoxy Resins: Their Applications and Technology , McGraw-Hill Book Co., Inc., New York.
15.
Hughes, J.D.H. (1991). The Carbon Fibre/Epoxy Interface - A Review, Composites Science and Technology, 41: 13-45.
16.
Kornmann, X., Lindberg, H. and Berglundm, L.A. (2001). Synthesis of Epoxy-Clay Nanocomposites: Influence of the Nature of the Clay on Structure, Polymer, 42: 1303-1310.
17.
Kornmann, X., Lindberg, H. and Berglund, L.A. (2001). Synthesis of Epoxy-Clay Nanocomposites: Influence of the Nature of the Curing Agent on Structure, Polymer, 42: 4493-4499.
18.
Messersmith, P.B. and Giannelis , E.P. (1994). Synthesis and Characterization of Layered Silicate-Epoxy Nanocomposites, Chemistry of Materials, 6: 1719-1725.
19.
Becker, O., Varley, R.J. and Simon, G.P. (2004). Thermal Stability and Water Uptake of High Performance Epoxy Layered Silicate Nanocomposites, European Polymer Journal , 40: 187-195.
20.
Yasmin, A., Abot, J.L. and Daniel, I.M. (2001). Processing of Clay/Epoxy Nanocomposites by Shear Mixing, Scripta Materialia, 49: 81-86.
21.
Mark, J.E. (1996). Ceramic Reinforced Polymers and Polymer-Modified Ceramics, Polymer Engineering and Science, 36: 2905-2920.
22.
Martin Stenitzke (1997). Review: Structural Ceramic Nanocomposites. Journal of European Ceramic Society, 17: 1061-1082.
23.
Carrado, K.A. (2000). Synthetic Organo- and Polymer-Clays: Preparation, Characterization and Materials Applications, Applied Clay Science, 17: 1-23.
24.
Liu, X. and Wu, Q. (2001). PP/Clay Nanocomposites Prepared by Grafting-Melt Intercalation, Polymer, 10: 10013-10019.
25.
Isik, I., Yilmazer, U. and Bayram, G. (2003). Impact Modified Epoxy/Montmorillonite Nanocomposites: Synthesis and Characterization, Polymer, 44: 6371-6377.
26.
Vaia, R.A., Jandt, K.D., Kramer, E.J. and Giannelis, E.P. (1996). Microstructural Evolution of Melt Intercalated Polymer-Organically Modified Layered Silicates Nancompoistes, Chemistry of Materials, 8: 2628-2635.
27.
Kornmann, X. and Berglund, L.A. (1998). Nanocomposites Based on Un-Saturated Polyester, Polymer Engineering and Science , 38: 1351-56.
28.
Wetzel, B., Haupert, F. and Zhang, M.Q. (2003). Epoxy Nanocomposites with High Mechanical and Tribological Performance, Composites Science and Technology , 63: 2055-2067.
29.
Lee, J.Y. and Lee, H.K. (2004). Characterization of Organobentonite used for Polymer Nanocomposites, Materials Chemistry and Physics, 85: 410-415.
30.
Park, J.H. and Jana, S.C. (2003). The Relationship between Nano- and Micro-Structures and Mechanical Properties of PMMA-Epoxy-Nanoclay Composites, Polymer, 44: 2091-2100.
31.
Wetzel, B., Haupert, F., Friedrich, K., Zhang, M.Q. and Rong, M.Z. (2002). Impact and Wear Resistance of Polymer Nanocomposites at Low Filler Content, Polymer Engineering and Science, 42: 1919-1927.
32.
Wu, C.L. , Zhang, M.Q., Rong, M.Z. and Friedrich , K. (2002). Tensile Performance Improvement of Low Nanoparticle Filled Polypropylene Composites , Composites Science and Technology, 62: 1327-1340.
33.
Haque, A., Shamsuzzoha, M., Hussain, F. and Dean, D. (2003). S2-Glass/Epoxy Polymer Nanocomposites: Manufacturing, Structures, Thermal and Mechanical Properties, Journal of Composite Materials, 37: 1821-1837.
