Beta Phase Formation of Polypropylene with Bentonite Filler
DOI:
https://doi.org/10.29105/qh2.2-139Palabras clave:
Composites, polypropylene,, beta phase, bentonite, treated filler, dispersion stateResumen
In this paper, a study on Polypropylene (PP)/bentonite composites is presented. PP/bentonite composites were prepared using 5%, 10% and 25% of concentration in weight of unmodified and modified bentonite filler. The relative leve! of the beta phase of the samples was calculated using Wide Angle X-ray Diffraction (WAXD). Differential scanning calorimeter (DSC) was used to observe the melting and crystallization behaviour of the samples. The dispersion state of the composites was observed using optical rnicroscopy. The obtained results show the possibility of inducing the beta phase in PP material using bentonite as filler. However, only the composites of polypropylene with modified bentonite showed the beta signa! and higher content was at 10% of filler. Although at 10% of modified bentonite the dispersion is worse than in 5%, at 10% there are more nucleating sites for beta phase formation and consequently more beta content. However, as concentration ofthe filler increases to 25%, the nucleating sites also increase but its dispersion into the compound becomes worse which strongly decreases the beta phase formation.
Descargas
Citas
-[1] Jarvela P. A., and Jarvela P. K .. (1996), Journal of Materials Science, 31, 3853.
-[2] Tjong S. C., Li R. K. Y., and Cheung T. (1997) Polymer Engineering and Science, 37, 166. DOI: https://doi.org/10.1002/pen.11657
-[3] Lozano T., Lafleur P. G., Grmela M., Thibodeau C. (2004) Polymer Engineering and Science, 44,880. DOI: https://doi.org/10.1002/pen.20079
-[4] McGenity P. M., Hooper J. J., Paynter C. D., Riley A. M., Nutbeem C., Elton N. J., Adams J. M., Polymer, 33, 5215 (1992). DOI: https://doi.org/10.1016/0032-3861(92)90804-6
-[5] Rybnikar F. (1989) Journal of Applied Polymer Science, 38, 1479. DOI: https://doi.org/10.1002/app.1989.070380806
-[6] Liu J., Wei X. and Guo Q (1990) Journal of Applied Polymer Science, 41, 2829. DOI: https://doi.org/10.1002/app.1990.070411125
-[7] Jacoby P., Bersted B. H., Kissel W. J., and Smith C. E. (1986) J. Polym. Sci. Polym. Phys. Ed., 24,461. DOI: https://doi.org/10.1002/polb.1986.090240301
-[8] Keith H.D,Padden F. J., WalterN. M. andWycofIM. W. (1959) J.Appl.Phys.,30, 1485. DOI: https://doi.org/10.1063/1.1734986
-[9] Turner J. A., Aizlewood J. M., and Beckett D. A. (1964) Macromol. Chem., 75, 134. DOI: https://doi.org/10.1002/macp.1964.020750113
-[10] Meille S.V, Briickner S., Porzio W. (1990) Macromolecules, 23, 4114. DOI: https://doi.org/10.1021/ma00220a014
-[11] Briickner S, Meille S. V. (1989) Nature, 340,455. DOI: https://doi.org/10.1038/340455a0
-[12] Smit l., Musil V. and Svab l. (2004) J. Appl. Polym. Sci. Vol. 91, 4072-4081. DOI: https://doi.org/10.1002/app.13626
-[13] Meng M. R. and Dou Q. (2008) Materials Science and Engineering A, 492, 177-184. DOI: https://doi.org/10.1016/j.msea.2008.03.048
-[14] Crissman J.M, J.Polym.Sci., A-2,7, 389(1969). DOI: https://doi.org/10.1002/pol.1969.160070210
-[15] Dragaun H., Hubeny H., Muschik H., J. Polym. Sci. Polym. Phys. Ed., 15, 1779 (1977). DOI: https://doi.org/10.1002/pol.1977.180151008
-[16] Samuels R. and Yee R. Y., J. Polym. Sci., A-2, 10, 385 (1972). DOI: https://doi.org/10.1002/pol.1972.160100301
-[17] Labour T, G. Vigier, R. Seguela, C. Gauthier, G. Orange, Y. Bomal, J. Polym. Sci. Part B: Polym. Phys.40, 31 (2002). DOI: https://doi.org/10.1002/polb.10068
-[18] Tabtiang A., R. Venables, Composite Interfaces, 6(1 )65, (1999). DOI: https://doi.org/10.1163/156855499X00305
-[19] Tjong S. C., Shen J. S., Li R. K. Y.Polymer, 37, 2309 (1996b). DOI: https://doi.org/10.1016/0032-3861(96)85340-7
-[20] Tjong S. C., Shen J. S., Li R. K. Y., Polym. Eng. Sci., 36, 100 (1996a). DOI: https://doi.org/10.1002/pen.10390
Descargas
Publicado
Cómo citar
Número
Sección
Licencia
Derechos de autor 2012 Tomás Lozano, Ana Beatriz Morales, Pierre G. Lafleur , Felipe Cerino, Julio Laria, Homero Salas, Rodolfo Barragan , Roberto Pichardo
Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.
