Soy-based nanocomposites were synthesized using soy resin and montmorillonite clay. Two types of dispersion techniques, pneumatic and sonication, were carried out to disperse the nanoclay into the soy-based epoxy resin. Tensile testing of the nanocomposites showed that the nanoclay improved the modulus and the strength by 625% and 340%, respectively. Exfoliation of the nanoclay was investigated by X-ray diffraction. The curing mechanism of soy epoxy resin with different amounts of montmorillonite was studied using differential scanning calorimetry and Fourier transform infrared spectroscopy. Rheological measurements were also conducted to find the suitability of using the soy-based epoxy clay nanocomposites toward composite manufacturing applications. The dielectric constant and the loss factor were also investigated. These soy-based nanocomposites hold great promise as environmentally friendly and low cost materials for structural applications.
Pinnavaia, T.J. and Beall, G.W. (2000). Polymer—Clay Nanocomposites, Wiley, London.
2.
Akelah, A. and Moet, A. (1996). Polymer—Clay Nanocomposites: Free Radical Grafting of Polystyrene on to Organophilic Montmorillonite Interlayers, Journal of Materials Science, 31(13): 3589—3596.
3.
Koo, C.M., Kim, J.M., Choi, M.H., Kim, S.O. and Chung, I.J. (2003). Mechanical and Rheological Properties of the Maleated Polypropylene-layered Silicate Nanocomposites with Different Morphology, Journal of AppliedPolymer Science, 88(6): 1526—1535.
4.
Lan, T., Kaviratna, P.D. and Pinnavaia, T.J. (1995). Mechanism of Clay Tactoid Exfoliation in Epoxy—Clay Nanocomposites, Chemistry of Materials, 7(11): 2144—2150.
5.
Zeng, Q.H., Yu, A.B., Lu, G.Q. and Paul, D.R. (2005). Clay-based Polymer Nanocomposites: Research and Commercial Development, Journal of Nanoscience and Nanotechnology , 5(10): 1574—1592.
6.
Blumstein, A. (1965). Polymerization of Adsorbed Monolayers. 1. Preparation of the Clay-Polymer Complex, Journal of Polymer Science: Part A, 3(7): 2653—2664.
7.
El Harrak, A. , Carrot, G., Oberdisse, J., Eychenne-Baron , Ch. and Boue, F. (2004). Surface— Atom Transfer Radical Polymerization from Silica Nanoparticle with Controlled Colloidal Stability, Macromolecules, 37(17): 6376—6384.
8.
Kaempfer, D. , Thomann, R. and Mulhaupt, R. (2002). Melt Compounding of Syndiotactic Polypropylene Nanocomposites Containing Organophilic Layered Silicates and in situ Formed Core/Shell Nanoparticles, Polymer, 43(10): 2909—2916.
9.
Usuki, A., Kojima, Y., Kawasumi, M., Okada, A., Fukushima, Y., Kurauchi, T. and Kamigaito, O. (1993). Synthesis of Nylon 6-clay Hybrid, Journal of Materials Research, 8(5): 1179—1184.
10.
Kornmann, X., Lindberg, H. and Berglund, L.A. (2001). Synthesis of Epoxy—Clay Nanocomposites: Influence of the Nature of the Clay on Structure, Polymer , 42(4): 1303—1310.
11.
Ke, Y., Long, C. and Qi, Z. (1999). Crystallization, Properties and Crystal and Nanocrystal Morphology of PET-clay Nanocomposites, Journal of Applied Polymer Science, 71(7): 1139—11464.
12.
Wang, Z. and Pinnavaia, T.J. (1998). Nanolayer Reinforcement of Elastomeric Polyurethane , Chemistry of Materials, 10(12): 3769—3771.
13.
Rong, M.Z., Zhang, M.Q., Liu, H. and Zeng, H. (1999). Synthesis of Silver Nanoparticles and their Self-organization Behavior in Epoxy Resin, Polymer, 40(22): 6169—6168.
14.
Chen, C. and Curliss, D. (2003). The Role of Preconditioning on Morphology Development in Layered Silicate Thermoset Nanocomposites, Journal of AppliedPolymer Science, 90(8): 2276—2287.
15.
Wang, Z. and Pinnavaia, T.J. (1998). Hybrid Organic—Inorganic Nanocomposites: Exfoliation of Nanolayers in an Elastomeric Epoxy Polymer, Chemistry of Materials, 10(7): 1820—1826.
16.
Nigam, V., Setua, D.K., Mathur, G.N. and Kar, K.K. (2004). Epoxy—Montmorillonite Clay Nanocomposites: Synthesis and Characterization, Journal of AppliedPolymer Science, 93(5): 2201—2210.
17.
Kornmann, X. , Thomann, R., Mulhaupt, R., Finter, J. and Berglund, L. (2002). Synthesis of Amine-cured, Epoxy-layered Silicate Nanocomposites: The Influence of the Silicate Surface Modification on the Properties, Journal of Applied Polymer Science, 86(4): 2643—2652.
18.
Tolle, T.B. and Anderson, D.P. (2004). The Role of Preconditioning on Morphology Development in Layered Silicate Thermoset Nanocomposites, Journal of AppliedPolymer Science, 91(1): 89—100.
19.
Zerda, A.S. and Lesser, A.J. (2001). Intercalated Clay Nanocomposites: Morphology, Mechanics and Fracture Behavior, Journal of Polymer Science: Part B: Polymer Physics, 39(80): 1137—1146.
Kaplan, D.L. (1998). Biopolymers from Renewable Resources, Springer, New York.
22.
Li, F. and Larock, R.C. (2000). Thermosetting Polymers from Cationic Copolymerization of Tung Oil: Synthesis and Characterization, Journal of AppliedPolymer Science, 78(5): 1044—1056.
23.
Zhu, J., Chandrashekhara, K., Flanigan, V. and Kapila, S. (2004). Curing and Mechanical Characterization of a Soy-based Epoxy Resin System, Journal of AppliedPolymer Science, 91(6): 3513—3518.
24.
Shabeer, A. , Garg, A., Sundararaman, S., Chandrashekhara , K., Flanigan, V. and Kapila, S. (2005). Dynamic Mechanical Characterization of a Soy-based Epoxy Resin System, Journal of Applied Polymer Science, 98(4): 1772—1780.
25.
Santosh, D.W. and Jog, J.P. (2003). Effect of Modified Layered Silicate and Compatibilizers on the Properties of PMP/Clay Nanocomposites, Journal of AppliedPolymer Science, 90(12): 3233—3238.
26.
Chen, B. and Evans, J.R.G. (2006). Nominal and Effective Volume Fractions in Polymer—Clay Nanocomposites, Macromolecules, 39(5): 1790—1796.
27.
Juangvanich, N. and Stoffer, J. (2002). Reactions of Amines with Epoxidized Soybean Oil, Polymer Preprints, 43(2): 922—923.
