Effect of Nanofillers on Phase Separation Behaviour of Diblock Copolymer: A Molecular Dynamic Study

Abstract:

Polymer nanocomposites are recognized as the next generation of polymer composites due to their exceptional properties. Understanding the molecular origin of the reinforcement mechanism is crucial to the development of such promising materials. This paper reports our recent molecular dynamic study on clay-based polyurethane nanocomposites. The effect of clay platelets on phase separation behavior of polyurethane, at the clay-polyurethane interface, is quantified in terms of molecular interactions, structure and dynamics. The results show that the nanoconfinement of polyurethane chains in clay gallery impedes the development of phase separation commonly observed in bulk polyurethane. The absence of phase separation of intercalated polyurethane is believed to be related to the competitive interactions among clay platelet, polyurethane and surfactant.

• Periodical: Key Engineering Materials (Volumes 334-335)
• Pages: 753-756
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.334-335.753
• Online since: March 2007
• Authors: Qing Hua Zeng, Ai Bing Yu, Gao Qing Max Lu
• Keywords: Interfacial Interaction, Molecular Dynamic Simulation, Molecular Structure, Phase Separation, Polymer Nanocomposite

References

[1] T. J. Pinnavaia, G. W. Beall, Polymer-clay Nanocomposites, Wiley, London (2000).

[2] R. Krishnamoorti, R. A. Vaia, Polymer nanocomposites, synthesis, characterization, and modeling, Oxford University Press, Oxford (2002).

[3] Q. H. Zeng, A. B. Yu, G. Q. Lu, D. R. Paul, J. of Nanosci. Nanotechnol. 5 (2005), 1574.

[4] Z. Wang, T. J. Pinnavaia, Chem. Mater. 10 (1998) 3769.

[5] Y. I. Tien, K. H. Wei, Polymer 42 (2001) 3213.

[6] W. J. Wang, W. K. Chin, J. Polym. Sci. Part B-Polym. Phys. 40 (2002) 1690.

[7] J. K. Mishra, I. Kim, C. S. Ha, Macromolecular Rapid Comm. 24 (2003) 671.

[8] M. Song, D. J. Hourston, K. J. Yao, J. K. H. Tay, M. A. Ansarifar, J. Appl. Polym. Sci. 90 (2003) 3239.

[9] B. Finnigan, D. Martin, P. Halley, R. Truss, K. Campbell, Polymer 45 (2004) 2249.

[10] J. R. Zheng, R. Ozisik, R. W. Siegel, (2006), personal communication.

[11] A. C. Balazs, V. V. Ginzburg, F. Qiu, G. W. Peng, D. Jasnow, J. Phys. Chem. B 104 (2001) 3411.

[12] Q. H. Zeng, A. B. Yu, G. Q. Lu, R. K. Standish, Chem. Mater. 15 (2003) 4732.

[13] Q. H. Zeng, A. B. Yu, G. Q. Lu, R. K. Standish, J. Phys. Chem. B 108 (2004) 10025.

[14] H. Z. Shi, T. Lan, T. J. Pinnavaia, Chem. Mater. 8, 1584 (1996).