Abstract
With the use of methods of X-ray diffraction analysis and differential scanning calorimetry, the structure and melting and crystallization of isotactic polypropylene are studied in the presence of components of a sulfur-containing vulcanizing system composed of sulfur, zinc oxide, stearic acid, Altax, and thiuram, which is used for synthesis of thermoplastic vulcanizates. It is found that the addition of zinc oxide results in the formation of the β phase of polypropylene, and the content of this product depends on the concentration of a nucleating agent. The heat pretreatment of samples has a strong effect on the formation of β -polypropylene. The addition of residual compounds to polypropylene at the studied concentrations has practically no effect on its structure. With an increase in the content of the β phase, the elastic modulus and elongation at neck formation of polypropylene increase, whereas its tensile strength, elongation at yield, and elongation at break decrease.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
S. Abdou-Sabet and S. Datta, in Polymer Blends, Ed. by D. R. Paul and C. B. Bucknall (Wiley, New York, 2000).
Polypropylene, Ed. by J. Karger-Kocsis (Kluwer Academic, Dordrecht, 1999).
T. I. Medintseva, S. A. Kuptsov, A. I. Sergeev, and E.V. Prut, Polymer Science, Ser. A 48, 941 (2006) [Vysokomol. Soedin., Ser. A 48, 1616 (2006)].
J. A. Turner, J. M. Aizlewood, and D. R. Beckett, Makromol. Chem. 128, 134 (1969).
L. I. Mirkin, in Handbook on X-Ray Diffraction Analysis of Polycrystals, Ed. by Ya. S. Umanskii (Fizmatlit, Moscow, 1961) [in Russian].
Yu. K. Godovsky, Thermal Physics of Polymers (Khimiya, Moscow, 1982) [in Russian].
B. Wunderlich, Macromolecular Physics (Academic, New York, 1976; Mir, Moscow, 1979).
V. A. Bershtein and V. M. Egorov, Differential Scanning Calorimetry in Physical Chemistry of Polymers (Khimiya, Leningrad, 1990) [in Russian].
P. Jacoby, B. H. Bersted, W. J. Kissel, and C. E. Smith, J. Polym. Sci., Part B: Polym. Phys. 24, 461 (1986).
J. X. Li and W. L. Cheung, Polymer 39, 6935 (1998).
J. Kotek, M. Raab, J. Baldrian, and W. Grellmann, J. Appl. Polym. Sci. 85, 1174 (2002).
M. Raab, J. Scudla, and J. Kolarik, Eur. Polym. J. 40, 1317 (2004).
J. Karger-Kocsis and J. Varga, J. Appl. Polym. Sci. 62, 291 (1996).
G. Shi, F. Chu, G. Zhou, and Z. Han, Makromol. Chem. 190, 907 (1989).
Author information
Authors and Affiliations
Corresponding author
Additional information
This work was supported by the Russian Foundation for Basic Research (project no. 07-03-12048-ofi).
Original Russian Text © E.V. Prut, D.V. Petrushenko, T.I. Medintseva, D.P. Shashkin, 2010, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2010, Vol. 52, No. 2, pp. 223–227.
Rights and permissions
About this article
Cite this article
Prut, E.V., Petrushenko, D.V., Medintseva, T.I. et al. Effect of components of a sulfur-containing vulcanizing system on the structure and properties of isotactic polypropylene. Polym. Sci. Ser. A 52, 139–143 (2010). https://doi.org/10.1134/S0965545X10020057
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0965545X10020057