Studies were conducted on the effects of filler loading and 3-aminopropyltriethoxysilane (SCA) on the physical characteristics of epoxidized natural rubber (ENR)-alumina nanoparticles composites (ENRAN). The filler loading varied from 10, 20, 30, 40, 50, and 60 phr in the absence and presence of 2 phr SCA in every formulation. The alumina nanoparticles have a positive interaction with the ENR matrix since they increase the glass transition temperature of the composites [Mohamad, N., Muchtar, A., Ghazali, M.J., Dahlan, H.M. and Azhari, C.H. (2008). The Effect of Filler on Epoxidized Natural Rubber-Alumina Nanoparticles Composites, Eur. J. Sci. Res., 24: 538—547]. The addition of SCA decreased the maximum torque (MH) and the torque difference (MH-ML) of ENRANs compound as well as causing the curing process to occur at a very fast rate. The spherical alumina particles were dispersed in ENR matrix and a uniform particle distribution was observed under scanning electron microscope enabling the increase of the torque values in the composites.
Teh, P.L. , Mohd Ishak, Z.A., Hashim, A.S., Karger-Kocsis , J. and Ishiaku, U.S. (2004). Effects of Epoxidized Natural Rubber as a Compatibilizer in Melt Compounded Natural Rubber-Organoclay Nanocomposites, Eur. Polym. J., 40: 2513-2521.
2.
Shanmugharaj, A.M., Bae, J.H., Lee, K.Y., Noh, W.H., Lee, S.H. and Ryu, S.H. (2007). Physical and Chemical Characteristics of Multiwalled Carbon Nanotubes Functionalized with Aminosilane and its Influence on the Properties of Natural Rubber Composites, Comp. Sci. Technol., 67: 1813-1822.
3.
Siegel, R.W., Chang, S.K., Ash, B.J., Stone, J., Ajayan, P.M., Doremus, R.W. et al. (2001). Mechanical Behavior of Polymer and Ceramic Matrix Nanocomposites, Scripta Mater., 44: 2061-2064.
4.
Park, S.J., Jin, S.Y. and Kaang, S. ( 2005). Influence of Thermal Treatment of Nano-scaled Silica on Interfacial Adhesion Properties of the Silica/Rubber Compounding, Mater . Sci. Eng. A, 398: 137-141.
5.
Lopez-Manchado, M.A., Valentin, J.L., Carretero, J., Barroso, F. and Arroyo, M. (2007). Rubber Network in Elastomer Nanocomposites, Eur. Polym. J., 43: 4143-4150.
6.
Ajayan, P.M., Schadler, L.S. and Braun, P.V. ( 2003). Nanocomposite Science and Technology, Weinheim, Wiley-VCH Verlag GmbH & Co. KGaA.
7.
Peng, Z., Kong, L.X., Li, S.D., Chen, Y. and Huang, M.F. ( 2007). Self-assembled Natural Rubber/Silica Nanocomposites: Its Preparation and Characterization, Comp. Sci. Technol. , 67: 3130-3139.
8.
Vu, Y.T. , Mark, J.E., Pham, L.Y.H. and Engelhardt , M. (2001). Clay Nanolayer Reinforcement of cis-1,4-Polyisoprene and Epoxidized Natural Rubber, J. Appl. Polym. Sci., 82: 1391-1403.
9.
Varghese, S. , Karger-Kocsis, J. and Gatos, K.G. (2003). Melt Compounded Epoxidized Natural Rubber/Layered Silicate Nanocomposites: Structure-Properties Relationships , Polymer, 44: 3977-3983.
10.
Ahankari, S.S. and Kar, K.K. (2008). Processing of Styrene Butadiene Rubber-Carbon Black Nanocomposites with Gradation of Crosslink Density: Static and Dynamic Mechanical Characterization, Mater. Sci. Eng. A, 491: 454-460.
11.
Falco, A.D. , Goyanes, S., Rubiolo, G.H., Mondragon, I. and Marzocca, A. (2007). Carbon Nanotubes as Reinforcement of Styrene Butadiene Rubber, Appl. Surf. Sci., 254: 262-265.
12.
Das, A. , Costa, F.R., Wagenknecht, U. and Heinrich, G. (2008). Nanocomposites Based on Chloroprene Rubber: Effect of Chemical Nature and Organic Modification of Nanoclay on the Vulcanizate Properties, Eur. Polym. J. , 44: 3456-3465.
13.
Chang, Z.H. , Guo, F., Chen, J.F., Yu, J.H. and Wang, G.Q. (2007). Synergistic Flame Retardant Effects of Nano-kaolin and Nano-HAO on LDPE/EPDM Composites, Polym. Degrad. Stabil., 92: 1204-1212.
14.
Jose, M.V., Steinert, B.W., Thomas, V., Dean, D.R., Abdalla, M.A., Price, G. et al. (2007). Morphology and Mechanical Properties of Nylon 6/MWNT Nanofibers, Polymer, 48: 1096-1104.
15.
Kalaitzidou, K., Fukushima, H. and Drzal, L.T. (2007). A New Compounding Method for Exfoliated Graphite-Polypropylene Nanocomposites with Enhanced Flexural Properties and Lower Percolation Threshold, Comp. Sci. Technol. , 87: 2045-2051.
16.
Hasan, M.M., Zhou, Y. and Jeelani, S. ( 2007). Thermal and Tensile Properties of Aligned Carbon Nanofiber Reinforced Polypropylene, Mater. Lett., 61: 1134-1136.
17.
Bhimaraj, P., Burris, D.L., Action, J., Sawyer, W.G., Toney, C.G., Siegel, R.W. et al. (2005). Effect of Matrix Morphology on the Wear and Friction Behavior of Alumina Nanoparticle/Poly(ethylene terephthalate) Composites , Wear, 258: 1437-1443.
18.
Costache, M.C. , Wang, D., Heidecker, M.J., Manias, E. and Wilkie, C.A. (2006). The Thermal Degradation of Poly(Methyl Methacrylate) Nanocomposites with Montmorillonite, Layered Double Hydroxides and Carbon Nanotubes. Polym. Adv. Technol. , 17: 272-280.
19.
Chandra, A., Turng, L.S., Gopalan, P., Rowell, R.M. and Gong, S. ( 2008). Study of Utilizing Thin Polymer Surface Coating on the Nanoparticles for Melt Compounding of Polycarbonate/Alumina Nanocomposites and their Optical Properties, Comp. Sci. Technol., 68: 768-776.
20.
Eitan, A., Fisher, F.T., Andrews, R., Brinson, L.C. and Schadler, L.S. ( 2006). Reinforcement Mechanisms in MWCNT-filled Polycarbonate, Comp. Sci. Technol., 66: 1162-1173.
21.
Kontopoulou, M., Liu, Y., Austin, J.R. and Parent, J.S. (2007). The Dynamics of Montmorillonite Clay Dispersion and Morphology Development in Immiscible Ethyleneepropylene Rubber/Polypropylene Blends, Polymer, 48: 4520-4528.
22.
Arroyo, M., Lopez-Manchado, M.A. , Valentin, J.L. and Carretero, J. (2006). Morphology/Behaviour Relationship of Nanocomposites Based on Natural Rubber/Epoxidized Natural Rubber Blends, Comp. Sci. Technol., 67: 1330-1339.
23.
Ismail, H. and Chia, H.H. ( 1998). The Effects of Multifunctional Additive and Vulcanization Systems on Silica Filled Epoxidized Natural Rubber Compounds, Eur. Polym. J., 34: 1857-1863.
24.
Noboru, I. ( 1987). Introduction to Fine Ceramics (Application in Engineering) , New York, John Wiley & Sons Ltd.
25.
Gatos, K.G. , Martinez Alcazar , J.G., Psarras, G.C., Thomann, R. and Karger-Kocsis, J. (2007). Polyurethane Latex/Water Dispersible Boehmite Alumina Nanocomposites: Thermal, Mechanical and Dielectrical Properties. Comp. Sci. Technol. , 67: 157-167.
26.
Jung, C.H., Choi, J.H., Lim, Y.M., Jeun, J.P., Kang, P.H. and Nho, Y.C. ( 2006). Preparation and Characterization of Polypropylene Nanocomposites Containing Polystyrene-grafted Alumina Nanoparticles, J. Ind. Eng. Chem., 12: 900-904.
27.
Ash, B.J. , Schadler, L.S. and Siegel, R.W. (2002). Glass Transition Behaviour of Alumina Polymethylmethacrylate Nanocomposites, Mater. Lett., 55: 83-87.
28.
Ash, B.J. , Siegel, R.W. and Schadler, L.S. (2004). Mechanical Behavior of Alumina/Poly(Methyl Methacrylate) Nanocomposites, Macromolecules , 37: 1358-1369.
29.
Mohamad, N., Muchtar, A., Ghazali, M.J., Dahlan, H.M. and Azhari, C.H. ( 2008). The Effect of Filler on Epoxidized Natural Rubber-Alumina Nanoparticles Composites, Eur. J. Sci. Res., 24: 538-547.
30.
Jia, Q.X. , Wu, Y.P., Wang, Y.Q., Lu, M. and Zhang, L.Q. (2008). Enhanced Interfacial Interaction of Rubber/Clay Nanocomposites by a Novel Two-step Method, Comp . Sci. Technol., 68: 1050-1056.
31.
Zhao, S., Schadler, L.S., Duncan, R., Hillborg, H. and Auletta, T. ( 2008). Mechanisms Leading to Improved Mechanical Performance in Nanoscale Alumina Filled Epoxy, Comp. Sci. Technol., 68: 2965-2975.
32.
Dharmendra, K.S. , Subramanyam, V.K. and Venkitanarayanan , P. (2008). Epoxy Composites Using Functionalized Alumina Platelets as Reinforcements, Comp. Sci. Technol., 68: 3055-3063.
33.
Astm (2000). Annual Book of ASTM Standards, Vol. 09.01, West Conshohocken, PA, United States, American Society for Testing of Materials.
34.
Mohamad, N., Muchtar, A., Ghazali, M.J., Dahlan, H.M. and Azhari, C.H. ( 2009). Epoxidized Natural Rubber-Alumina Nanoparticle Composites: Optimisation of Mixer Parameters Via Response Surface Methodology (RSM), J. Appl. Polym. Sci., 115: 183-189.
35.
Ciprari, D.L. (2004). Mechanical Characterization of Polymer Nanocomposites and the Role of Interphase, Georgia, Georgia Institute of Technology.
36.
Manna, A.K. , De, P.P. and Tripathy, D.K. (2002). Dynamic Mechanical Properties and Hysteresis Loss of Epoxidized Natural Rubber Chemically Bonded to the Silica Surface, J. Appl. Polym. Sci., 84: 2171-2177.
37.
Li, H., Yan, Y., Liu, B., Chen, W. and Chen, S. ( 2007). Studies of Surface Functional Modification of Nanosized α-Alumina, Powder Technol., 178: 203-207.
38.
Ishak, Z.A.M. and Bakar, A.A. (1995). An Investigation on the Potential of Rice Husk Ash as Fillers for Epoxidized Natural Rubber (ENR), Eur. Polym. J., 31: 259-269.
39.
Sombatsompop, N., Thongsang, S., Markpin, T. and Wimolmala, E. (2004). Fly Ash Particles and Precipitated Silica as Fillers in Rubbers: Untreated Fillers in Natural Rubber and Styrene-Butadiene Rubber Compounds, J. Appl. Polym. Sci. , 93: 2119-2130.
40.
Ismail, H., Rozman, H.D., Jaffri, R.M. and Ishak, Z.A.M. ( 1997). Oil Palm Wood Flour Reinforced Epoxidized Natural Rubber Composites: The Effect of Filler Content and Size, Eur. Polym. J., 33: 1627-1632.
