Skip to main content Accessibility help
×
Home

Effect of Functionalization on the Crystallization Behavior of MWNT-PBT Nanocomposites

  • Gaurav Mago (a1), Carlos Velasco-Santos (a2), Ana L. Martinez-Hernandez (a2), Dilhan M. Kalyon (a3) and Frank T. Fisher (a4)...

Abstract

There is tremendous interest in using low loadings of multiwalled carbon nanotubes (MWNTs) to enhance the multifunctional properties of polymers, with functionalization often pursued to increase the dispersion and effective reinforcement of MWNTs within the polymer. In our interest to understand the effect of MWNT functionalization on Poly (butylene terephthalate) (PBT) crystallization kinetics, morphology and mechanical properties, nanocomposites were fabricated with both as-received and carboxyl group (-COOH) functionalized MWNTs. Initial results indicate as-received and functionalized nanotubes alter the crystallization temperature and crystal size for quiescent samples. In addition, isothermal crystallization studies using an Advanced Rheometric Expansion System (ARES) show that the addition of MWNTs increases the rate of PBT crystallization. However, functionalization was found to decrease the rate of nanocomposite crystallization as compared to nanocomposites samples prepared using pristine MWNTs, suggesting that nanotube functionalization weakens the nucleation effect observed in the nanocomposite samples. These results suggest that semicrystalline polymer nanocomposite crystallization kinetics and morphology can be significantly influenced by nanoparticle functionalization and chemistry. Further study of how these changes impact the rheological and multifunctional properties of semicrystalline nanocomposite systems are ongoing.

Copyright

References

Hide All
1 Gojny, F.H., Nastalczyk, J., Roslaniec, Z. and Schulte, K., Chem. Phys. Lett. 370, 820 (2003)
2 Liu, L. and Wagner, H.D., Compos. Sci. Technol. 65, 1861 (2005)
3 Velasco-Santos, C., Martínez-Hernández, A.L., Fisher, F.T., Ruoff, R. and Castaño, V.M., Chem. Mater. 15, 4470 (2003)
4 Paiva, M.C., Zhou, B., Fernando, K.A.S., Lin, Y., Kennedy, J.M. and Sun, Y.-P., Carbon 42, 2849 (2004)
5 Coleman, J.N., Khan, U., and Gun'ko, Y.K., Adv. Mat. 18, 689 (2006)
6 Sinnott, S.B., J. Nanoscience Nanotechnol. 2, 113 (2002)
7 Illers, K.-H., Colloid and Polymer Science 258, 117 (1980)
8 Pedroi-Cross, A., Rees, R.M. and Johns, J.W.C., J. Mol. Spectrosc. 191, 348 (1998).
9 Velasco-Santos, C., Martínez-Hernández, A.L., Lozada-Cassou, M., Alvarez-Castillo, A. and Castaño, V.M., Nanotechnology 13, 495 (2002).
10 Coates, J., “Interpretation of Infrared Spectra - A Practical Approach,” Encycl. of Analytical Chemistry, ed by Meyers, R.A., John Wiley & Sons Ltd, Chichester, 2000. pp. 1081510837.
11 Chen, J., Rao, A.M., Lyuksyutov, S., Itkis, M.E., Hamon, M.A., Hu, H., Cohn, R.W., Eklund, P.C., Colbert, D.T., Smalley, R.E. and Haddon, R.C., J. Phys Chem. B. 105, 2525 (2001).
12 Li, J., Fang, Z., Tong, L., Gu, A. and Liu, F., J. of Polym. Sci. B: Polym. Phys. 44, 1499 (2006)
13 Jin, J., Song, M. and Pan, F., Thermochimica Acta, 456, 25 (2007)

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed