ON THE EFFECT OF THE COMPOSITION OF THE ELASTOMERIC BLOCK OF SBS AND SEBES BLOCK POLYMERS ON THE RHEOLOGICAL PROPERTIES OF MODIFIED APHALTS

  • R. Herrera-Najera Facultad de Química, Edif. E, Universidad Nacional Autónoma de México
  • G. García-Guzmán Facultad de Química, Edif. E, Universidad Nacional Autónoma de México
  • H. Xicotencalt-Serrano Facultad de Química, Edif. E, Universidad Nacional Autónoma de México
  • L. Medina-Torres Facultad de Química, Edif. E, Universidad Nacional Autónoma de México
Keywords: asphalt, poly(styrene-block-butadiene-block-styrene-block) (SBS), poly(styrene-block (butadiene)1−x- (ethylene-co-butylene)x -block-styrene-block) (SBEBS), viscoelastic materials, Maxwell multimodal model

Abstract

The behaviour of asphalt (PMA) modified with SBS (lot 416) and SBEBS was studied to elucidate the effect of the composition of the elastomeric block of these two types of polymers on the morphology and rheology of PMAs. The SBEBS polymers were produced by homogeneous hydrogenation of the SBS having different degree of saturation of poly-butadiene double bonds (0%, 7%, 29% and 49%). Asphalt modified samples (PMA) with 10 wt % of polymer were prepared by hot mixing process (180 C, 4 hours, 5000 rpm). Fluorescence microscopic analysis indicated that PMA are heterogeneous materials exhibiting a polymer-rich and asphalts-rich phases. Oscillatory flow rheology analysis for various temperatures (40-90oC) indicate that all PMA prepared with SBEBS with higher saturation degree undergo structural changes exhibiting a higher viscoelastic response, and higher elasticity (G’>G”). The Maxwell multimodal model was employed to reproduce G’ and G” master curves. It was observed that the number of relaxation modes required to fit the data of SBEBS modified asphalt increases with the degree of polybutadiene saturation, since 12 modes are need are for SBEBS with 49 % of saturation while 8 modes are enough to fit the data of SBEBS 7 % of saturation.

References

Airey G.D. (2004). Styrene butadiene styrene polymer modification of road bitumens. Journal of Materials Science 39, 951-959.

Becker Y., Müller A.J. y Rodríguez Y. (2003). Use of rheological compatibility criteria to study SBS modified asphalts. Journal of Applied Polymer Science 90, 1772-1782.

Carreau P.J., Bousmina M. y Bonniot F. (2000). The viscoelastic properties of polymer-modified asphalts. Canadian Journal of Chemical Engineering 78, 495-503.

Champion L., Gerard J.F., Planche J.P., Martin D. y Anderson D. (2001). Low temperature fracture properties of polymer-modified asphalts relationships with the morphology. Journal of Materials Science 36, 451-460.

Corbett L.W. (1976) U.S. Patent 3940281,

Corbett L.W. (1979). Dumbbell mix for better asphalt Hydrocarbon Processing 58, 173-177.

Escobar, V.A., Herrera, R., Petit, A. y Pla, F. (2000). Selective hydrogenation of butadiene-styrene copolymers using a Ziegler-Natta type catalyst 2. Thermal properties. European Polymer Journal 36, 18.

Fawcett A.H. y McNally T. (2000). Blends of bitumen with various polyolefins. Polymer 41, 5315-5326.

García-Guzmán G. (2008) . Caracterización de asfaltos modificados con copolímeros tipo SB y SBS puros y parcialmente hidrogenados mediante índice de penetración y morfología. Tesis Licenciatura, UNAM.

García-Morales M., Partal P., Navarro F.J., Martínez-Boza F., Gallegos C., González N. y Muñoz M.E. (2004). Viscous properties and microstructure of recycled EVA modified bitumens. Fuel 83, 31-38.

García-Morales M., Partal P., Navarro F.J., Martínez-Boza F.J. y Gallegos C. (2006). Topics of interest: rheology, high-pressure rheology, polymer modified asphalts, waste polymers, reactive polmers, oil heavy. Rheologica Acta 45, 513-524.

González-Aguirre P., Medina-Torres L., Schrauwen C., Fonteix C., Pla F. y Herrera-Nájera R. (2009). Morphology and rheological behavior of maltene-polymer blends. I. Effect of partial hydrogenation of poly(styrene-block-butadieneblock-styrene-block)-type copolymers. Journal of Applied Polymer Science 112, 1330-1344.

González O., Muñoz M.E. y Santamaría A. (2006). Bitumen/polyethylene blends: using mLLDPEs to improve stability and viscoelastic properties. Rheologica Acta 45, 603-610.

Graeling D., Muller R. y Palierne J.F. (1993). Linear viscoelastic behavior of some incompatible polymer blends in the melt. Interpretation of date with a model of emulsion of viscoelastic liquids. Macromolecules 26, 320-329.

Ho, R.M., Adedeji, A., Giles, D.W., Hajduk, D.A., Macosko, C.W. y Bates, F.S. (1997). Microstructure of triblock copolymers in asphalt oligomers. Journal of Polymer Science Part B: Polymer Physics 35, 2857-2877.

Hsieh H.L. y Quirk R.P. (1996). Hydrogenated copolymers of unsubstituted and substituted conjugated dienes. Anionic polymerization - Principles and practical applications. Marcel Dekker: New York.

Hyong-Jun K. y Yongsok S. (2003). Effect of surface modification on the interfacial tension between the melts of high-density polyethylene and nylon 66: Correlation between rheology and morphology. Langmuir 19, 2696-2704.

Lacroix C., Bousmina M., Carreau P.J. y Favis D. (1996). Properties of PETG/EVA blends: 2. Study of reactive compatibilization by n.m.r. spectroscopy and linear viscoelastic properties. Polymer 37, 2939-2956.

Lesueur, D.; Gerard, J. F., Claudy, P., Letoffe, J. M., Planche, J.P. y Martin, D. (1998). Polymer modified asphalts as viscoelastic emulsions. Journal of Rheology 42, 1059-1974.

Lu X. e Isacsson U. (1997). Rheological Characterization of Styrene-Butadiene-Styrene Copolymer Modified Bitumens, Construction and Building Materials. Construction and Building Materials 11, 23-32.

Lu X. e Isacsson U. (1997). Rheological Characterization of Styrene-Butadiene-Styrene Copolymer Modified Bitumens, Construction and Building Materials. Construction and Building Materials 11, 23-32.

Masson J.F., Pelletier L. y Collins P. (2001). Rapid FTIR method for quantification of styrenebutadiene type copolymers in bitumen. Journal of Applied Polymer Science 79, 1034-1041.

McKay K.W., Gros W.A. y Diehl C.F. (1995). The influence of styrene-butadiene diblock copolymer on styrene-butadiene-styrene triblock copolymer viscoelastic properties and product performance. Journal of Applied Polymer Science 56, 947-958.

Pérez-Lepe A., Martínez-Boza F.J., Attané P. y Gallegos C. (2006). Destabilization mechanism of polyethylene-modified bitumen. Journal of Applied Polymer Science 100, 260-267.

Polacco G., Biondi D., Stastna J., Vlachovicova Z. y Zanzotto L. (2004).Effect of SBS on rheological properties of different base asphalts. Macromolecular Symposia 218, 333-342.

Polacco, G., Muscente, A., Biondi, D. y Santini, S. (2006). Effect of composition on the properties of SEBS modified asphalts. European Polymer Journal 42, 1113-1121.

Polacco G., Stastna J., Vlachovicova Z., Biondi D. y Zanzotto L. (2004). Temporary networks in polymer modified asphalts. Polymer Engineering Science 44, 2185

Rojas-García J.M. (1998) Estudio del efecto de la estructura de SBR’s aniónicos en la mitificación de las propiedades de poliestireno; y de la inserción de anhídrido maleico en SBR´s aniónicos vía extracción reactiva. Tesis Maestría. UNAM.

Stastna J., Zanzotto L. y Vacin O.J. (2003). Viscosity function in polymer-modified asphalts. Journal of Colloid and Interface Science 259, 200-207

Vargas, M. A., Chavez, A. E., Herrera, R. y Manero, O. (2005). Asphalt modified by partially hydrogenated SBS tri-block copolymers. Rubber Chemistry & Technology 78, 620-644.

Wen G., Zhang Y., Zhang Y., Sun K. y Fan Y. (2002). Rheological characterization of storagestable SBS-modified asphalts. Polymer Testing 21, 295-302.

Xicohtencatl Serrano H. (2007). Polymerization of butadiene and isoprene and in-situ hydrogenation of the polymers. Master Thesis, UNAM.
Published
2020-04-07
How to Cite
Herrera-Najera, R., García-Guzmán, G., Xicotencalt-Serrano, H., & Medina-Torres, L. (2020). ON THE EFFECT OF THE COMPOSITION OF THE ELASTOMERIC BLOCK OF SBS AND SEBES BLOCK POLYMERS ON THE RHEOLOGICAL PROPERTIES OF MODIFIED APHALTS. Revista Mexicana De Ingeniería Química, 11(1), 133-144. Retrieved from http://www.rmiq.org/ojs311/index.php/rmiq/article/view/1533