THE EFFECT OF NON-POLYMERIC COMPONENTS OF A RUBBER MIXTURE ON SURFACE PROPERTIES OF ELASTOMER COMPOSITIONS

The effect of non-polymeric components of a rubber mixture on the surface properties of butadienestyrene rubber obtained by solution polymerization was studied in the article. As non-polymeric components, ingredients widely used in the practice of the rubber industry were introduced into the rubber: fillers, surfactants of various types, and also sulfur - as a vulcanization agent. The surface free energy of the samples, a quantitative characteristic of the surface properties, was determined using the Owens-Wendt-Rabel-Kaelble method. It has been found that the surface properties of elastomeric compositions depend significantly on the solubility of the ingredients of the rubber composition and their adsorption properties. It has been shown that the most significant influence on the surface energy of butadiene-styrene rubber is exerted by the filler, on the surface of which rubber adsorption does not occur. The effect of surfactants on the surface energy of rubber compounds is different and depends on the nature of the surfactant. A partially soluble component - sulfur - in small quantities does not affect the surface energy of rubber samples. However, if it is present in the system in quantities greater than the solubility limit, it significantly reduces the surface free energy of the samples.

butadiene-styrene rubber, surface free energy, Owens, Wendt, Rabel and Kaelble method, surface properties, surfactants

1. Mark J.E., Erman B., Eirich F.R. Science and Technology of Rubber. London, UK: Elsevier, 2005.

2. Glazkov S.S., Kozlov V.A., Pozhidaeva A.E., Rudakov O.B. Surface energy characteristics of composites based on natural natural polymers. Sorbtsionnye i khromatograficheskie processy (Sorption and Chromatographic Processes). 2009; 9(1): 58-66. (in Russ.).

3. Kudrina G.V., Kalmyikov V.V., Shutilin Yu.F. The effect of metal salts of fatty acids on the physicochemical properties of rubbers and the parameters of the vulcanization grid. Kondensirovannye sredy i mezhfaznye granitsy (Condensed Matter and Interphases). 2010; 12(4): 369-374. (in Russ.).

4. Dick J.S. Rubber Technology: Compounding and Testing for Performance. Munich: Hanser Gardner Publication Inc., 2001. 567 p.

5. Dulina O.A., Abramova A.D., Sitnikova D.V., Bukanov A.M. The effect of stearic acid on surface properties of elastomeric compositions based on butadiene-styrene rubber. Vestnik MITHT (Fine Chem. Technol.). 2014; 9(3): 71-73. (in Russ.).

6. Zenkiewicz M. Methods for the calculation of surface free energy of solids. J. Achiev. in Mater. and Manufact. Eng. 2007; 24(1): 137-145.

7. Kłonica M., Kuczmaszewski J. Determining the value of surface free energy on the basis of the contact angle. Adv. in Sci. and Technol. Res. J. 2017; 11(1): 66-74.

8. Starostina I.A., Stoyanov O.V. Development of methods for assessing the surface acid-base properties of polymer materials. Vestnik Kazanskogo tekhnologicheskogo universiteta (Herald of Kazan Technological University). 2010; (4): 58-69. (in Russ.).

9. Mironyuk A.V., Pridatko A.V., Sivolapov P.V., Sviderskiy V.A. Features of evaluation of wetting of polymeric surfaces. Vostochno-Evropeyskiy zhurnal peredovykh tekhnologiy (Eastern European Journal of Enterprise Technologies). 2014; 1(6): 23-26. (in Russ.).

10. Domińczuk J., Krawczuk A. Comparison of surface free energy calculation methods. Appl. Mechanics and Materials. 2015; 791: 259-265.

11. Frolova M.A., Tutyugin A.S., Ayzenshtadt A.M., Lesovik V.S., Makhova T.A., Pospelova T.A. Criterion for estimating the energy properties of a surface. Nanosistemy: fizika, khimiya, matematika (Nanosystems: Physics, Chemistry, Mathematics). 2011; 2(4): 120-125. (in Russ.).

12. Rudawska A., Jacniacka E. Analysis for determining surface free energy uncertainly by the Owens–Wendt method. Int. J. Adhesion and Adhesives. 2009; 29(4): 451-457.

13. Dulina O.A., Sviridova E.A., Bukanov A.M. Some features of wetting rubber with water. Vestnik MITHT (Fine Chem. Technol.). 2009; 4(5): 85-86. (in Russ.).

14. Andrianov E.I. Methods for determining the structural and mechanical characteristics of powdered materials. Moscow: Khimiya Publ., 1982. 256 p. (in Russ.).

15. Jaycock M.J., Parfitt G. Chemistry of Interfaces. Moscow: Mir Publ., 1984. 269 p. (in Russ.)

16. Kovalenko A.N., Gurova A.V. The whole truth about chalk additives. Polimernye materialy (Polymer Materials). 2015; (8): 6-11. (in Russ.).

17. Grishin B.S. Solubility and diffusion of lowmolecular substances in rubbers and elastomeric composites. Kazan: KNITU Publ., 2012. 142 p. (in Russ.).