In this study, nano-SiO2-filled polycarbonate (PC) composites were produced by direct melt compounding in a Brabender mixer and then compression molded. The mechanical properties were characterized using tensile test, compact tension test, and dynamic mechanical thermal analysis. The results indicate that both stiffness and fracture toughness of PC composites are increased at low particle contents compared to neat PC. However, particle loadings higher than 4 vol. % lead to a decrease in analyzed mechanical properties. The transparency of PC composites, characterized by light transmission, haze, and clarity, is decreased with increase in particle content due to increasing light loss and thermal degradation of PC matrix during kneading process.
Stankowski, M., Kropidlowska, A., Gazda, M. and Haponiuk, J.T. (2008). Properties of Polyamide 6 and Thermoplastic Polyurethane Blend Containing Modified Montmorillonites , J. Therm. Anal. Calorim., 94(3): 817-823.
2.
Fornes, T.D. , Yoon, P.J., Keskkula, H. and Paul, D.R. (2001). Nylon 6 Nanocomposites: the Effect of Matrix Molecular Weight, Polymer, 42: 9929-9940.
3.
Petrovicova, E., Knight, R., Schadler, L.S. and Twardowski , T.E. (2000). Nylon 11/Silica Nanocomposite Coatings Applied by the HVOF Process. II. Mechanical and Barrier Properties, J. Appl. Polym. Sci., 78: 2272-2289.
4.
Siengchin, S. , Karger-Kocsis, J. and Thomann, R. (2007). Polystyrene-Fluorohectorite Nanocomposites Prepared by Melt Mixing with Latex Precompounding: Structure and Mechanical Properties, J. Appl. Polym. Sci., 106: 248-254.
5.
Norman, D.A. and Robertson, R.E. (2003). Rigid-Particle Toughening of Glassy Polymers, Polymer, 44: 2351-2362.
6.
Zhang, M. and Singh, R.P. ( 2004). Mechanical Reinforcement of Unsaturated Polyester by Al2O3 Nanoparticles, Mater. Lett., 58: 408-412.
7.
Rong, M.Z., Zhang, M.Q., Zheng, Y.X., Zeng, H.M. and Friedrich, K. ( 2001). Improvement of Tensile Properties of Nano-SiO2/PP Composites in Relation to Percolation Mechanism, Polymer, 42: 3301-3304.
8.
Xie, X.L. , Liu, Q.X., Li, R.K.-Y., Zhou, X.P., Zhang, Q.X. and Yu, Z.Z. (2004). Rheological and Mechanical Properties of PVC/CaCO3 Nanocomposites Prepared by in Situ Polymerization , Polymer, 45: 6665-6673.
9.
Karger-Kocsis, J. and Zhang, Z. ( 2005). Structure-Property Relationships in Nanoparticle/ Semicrystalline Thermoplastic Composites, In: Michler G.H. and Balta-Calleja F.J. (eds), Mechanical Properties of Polymers Based on Nanostructure and Morphology, p. 559, CRC Press, Boca Raton.
10.
Siengchin, S. , Karger-Kocsis, J. and Thomann, R. (2008). Nanofilled and/or Toughened POM Composites Produced by Water-Mediated Melt Compounding: Structure and Mechanical Properties, eXPRESS Polym. Lett., 2(10): 746-756.
11.
Grigo, U., Kircher, K. and Müller, P.R. ( 1992). Polycarbonate, In: Becker, G.W. and Braun, D. (eds), Kunststoff Handbuch, 3rd edn, pp. 117-159, Hanser Verlag, München, Wien.
12.
Domininghaus, H. ( 1992). Synthetische Kunststoffe, In: Eyerer, P., Elsner, P. and Hirth, T. (eds), Die Kunststoffe und ihre Eigenschaften, 6th edn, pp. 1019-1053, VDI-Verlag, Düsseldorf.
13.
Kircher, K. ( 2006). Herstellung Der Wichtigsten Kunststoffe, In: Keim, W. (ed.), Kunststoffe: Synthese, Herstellungsverfahren, Apparaturen, pp. 181-185, Wiley-VCH, Weinheim.
14.
Bayer, A.G. ( 1992). Makrolon-Technische Kunststoffe von Bayern, Anwendungstechnische Information, Bayer AG, Nr. KU 46100 d, Leverkusen.
15.
Chanda, M. and Roy, S.K. ( 1998). Plastics Technology Handbook, 3rd edn, pp. 618-619, Marcel Dekker, New york, Basel.
16.
Maruhashi, Y. and Iida, S. (2001). Transparency of Polymer Blends, Polym. Eng. Sci., 41(11): 1987-1995.
17.
Raghu, H., Bose, S., Kulkurani, M.B. and Mahanwar, P.A. ( 2007). Effect of Talc and Synthetic Sodium Aluminum Silicate on Properties of Polycarbonate, J. Therm. Comp. Mater., 20: 345-356.
18.
Wu, L.C. , Chen, P., Chen, J., Zhang, J. and He, J.S. (2007). Noticeable Viscosity Reduction Caused Jointly by Nano-Silica Filling and TLCP Fibrillation, Polym . Eng. Sci., 6: 757-764.
19.
Zhang, H., Zhang, Z., Friedrich, K. and Eger, C. ( 2006). Property Improvements of In Situ Epoxy Nanocomposites with Reduced Interparticle Distance at High Nanosilica Content, Acta Mater., 54: 1833-1842.
20.
Pothan, L.A. , Oommen, Z. and Thomas, S. (2003). Dynamic Mechanical Analysis of Banana Fiber Reinforced Polyester Composites, Compos. Sci. Technol., 63: 283-293.
21.
Kery, J. and Friedrich, K. ( 1987). Fracture Toughness and Fatigue Crack Propagation of Single Fibre-Bundle Reinforced Model Composites, J. Mater. Sci. Lett. , 6: 851-856.
22.
Yang, J.L., Zhang, Z. and Zhang, H. ( 2005). The Essential Work of Fracture of Polyamide 66 Filled With TiO2 Nanoparticles, Compos. Sci. Technol., 65: 2374-2379.
23.
Zhang, H., Zhong, Z., Yang, J.L. and Friedrich, K. ( 2006). Temperature Dependence of Crack Initiation Fracture Toughness of Various Nanoparticles Filled Polyamide 66, Polymer, 47: 679-689.
24.
Yu, J.H. , Wang, G.Q., Chen, J.F., Zeng, X.F. and Wang, W.Y. (2007). Toughening of Polypropylene Combined with Nanosized CaCO3 and Styrene-Butadiene-Styrene, Polym. Eng. Sci., 47: 201-206.
25.
Nevalainen, K., Vuorinen, J., Villman, V., Suihkonen, R., Jarvela, P., Sundelin, J. and Lepisto, T. (2009). Characterization of Twin-Screw-Extruder-Compounded Polycarbonate Nanoclays Composites, Polym. Eng. Sci., 49: 631-640.
26.
Heieh, A.J. , Moy, P., Beyer, F.L., Madison, P. and Napadensky, G. (2004). Mechanical Response and Rheological Properties of Polycarbonate Layered-Silicate Nanocomposites, Polym . Eng. Sci., 44: 825-837.
27.
Ahn, S.H. , Kim, S.H. and Lee, S.G. (2004). Surface-Modified Silica Nanoparticle-Reinforced Poly(Ethylene 2,6-Naphthalate), J. Appl. Polym. Sci., 94: 812-818.
28.
Davis, A. and Golden, J.H. ( 1969). Stability of Polycarbonate, J. Marcromol. Sci. - Revs. Marcromol. Chem., C3: 49-68.
29.
Davis, A. and Golden, J.H. ( 1968). Thermal Degradation of Polycarbonate, J. Chem. Soc. Part B. Phy. Org., 1-7: 45-47.
