Properties of Vulcanized Polyisoprene Rubber Composites Filled with Opalized White Tuff and Precipitated Silica
2014
Authors
Samaržija-Jovanović, SuzanaJovanović, Vojislav
Marković, Gordana
Zeković, Ivana Lj.
Marinović-Cincović, Milena
Article
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Opalized white tuff (OWT) with 40 mu m average particle size and 39.3m(2)/g specific surface area has been introduced into polyisoprene rubber (NR). Their reinforcing effects were evaluated by comparisons with those from precipitated silica (PSi). The cure characteristic, apparent activation energy of cross-link (E-ac) and reversion (E-ar), and mechanical properties of a variety of composites based on these rubbers were studied. This was done using vulcanization techniques, mechanical testing, and scanning electron microscopy (SEM). The results showed that OWT can greatly improve the vulcanizing process by shortening the time of optimum cure (t(c90)) and the scorch time (t(s2)) of cross-linked rubber composites, which improves production efficiency and operational security. The rubber composites filled with 50 phr of OWT were found to have good mechanical and elastomeric properties. The tensile strengths of the NR/OWT composites are close to those of NR/PSi composites, but the tear str...ength and modulus are not as good as the corresponding properties of those containing precipitated silica. Morphology results revealed that theOWT is poorly dispersed in the rubber matrix. According to that, the lower interactions betweenOWT and polyisoprene rubber macromolecules are obtained, but similar mechanical properties of NR/OWT (100/50) rubber composites compared with NR/PSi (100/50) rubber composites are resulted.
Source:
Scientific World Journal, 2014Funding / projects:
- Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
- Multiscale structuring of polymer nanocomposites and functional materials based on different precursors (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45022)
DOI: 10.1155/2014/913197
ISSN: 1537-744X
WoS: 000331307900001
Scopus: 2-s2.0-84896813375
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VinčaTY - JOUR AU - Samaržija-Jovanović, Suzana AU - Jovanović, Vojislav AU - Marković, Gordana AU - Zeković, Ivana Lj. AU - Marinović-Cincović, Milena PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5878 AB - Opalized white tuff (OWT) with 40 mu m average particle size and 39.3m(2)/g specific surface area has been introduced into polyisoprene rubber (NR). Their reinforcing effects were evaluated by comparisons with those from precipitated silica (PSi). The cure characteristic, apparent activation energy of cross-link (E-ac) and reversion (E-ar), and mechanical properties of a variety of composites based on these rubbers were studied. This was done using vulcanization techniques, mechanical testing, and scanning electron microscopy (SEM). The results showed that OWT can greatly improve the vulcanizing process by shortening the time of optimum cure (t(c90)) and the scorch time (t(s2)) of cross-linked rubber composites, which improves production efficiency and operational security. The rubber composites filled with 50 phr of OWT were found to have good mechanical and elastomeric properties. The tensile strengths of the NR/OWT composites are close to those of NR/PSi composites, but the tear strength and modulus are not as good as the corresponding properties of those containing precipitated silica. Morphology results revealed that theOWT is poorly dispersed in the rubber matrix. According to that, the lower interactions betweenOWT and polyisoprene rubber macromolecules are obtained, but similar mechanical properties of NR/OWT (100/50) rubber composites compared with NR/PSi (100/50) rubber composites are resulted. T2 - Scientific World Journal T1 - Properties of Vulcanized Polyisoprene Rubber Composites Filled with Opalized White Tuff and Precipitated Silica DO - 10.1155/2014/913197 ER -
@article{ author = "Samaržija-Jovanović, Suzana and Jovanović, Vojislav and Marković, Gordana and Zeković, Ivana Lj. and Marinović-Cincović, Milena", year = "2014", abstract = "Opalized white tuff (OWT) with 40 mu m average particle size and 39.3m(2)/g specific surface area has been introduced into polyisoprene rubber (NR). Their reinforcing effects were evaluated by comparisons with those from precipitated silica (PSi). The cure characteristic, apparent activation energy of cross-link (E-ac) and reversion (E-ar), and mechanical properties of a variety of composites based on these rubbers were studied. This was done using vulcanization techniques, mechanical testing, and scanning electron microscopy (SEM). The results showed that OWT can greatly improve the vulcanizing process by shortening the time of optimum cure (t(c90)) and the scorch time (t(s2)) of cross-linked rubber composites, which improves production efficiency and operational security. The rubber composites filled with 50 phr of OWT were found to have good mechanical and elastomeric properties. The tensile strengths of the NR/OWT composites are close to those of NR/PSi composites, but the tear strength and modulus are not as good as the corresponding properties of those containing precipitated silica. Morphology results revealed that theOWT is poorly dispersed in the rubber matrix. According to that, the lower interactions betweenOWT and polyisoprene rubber macromolecules are obtained, but similar mechanical properties of NR/OWT (100/50) rubber composites compared with NR/PSi (100/50) rubber composites are resulted.", journal = "Scientific World Journal", title = "Properties of Vulcanized Polyisoprene Rubber Composites Filled with Opalized White Tuff and Precipitated Silica", doi = "10.1155/2014/913197" }
Samaržija-Jovanović, S., Jovanović, V., Marković, G., Zeković, I. Lj.,& Marinović-Cincović, M.. (2014). Properties of Vulcanized Polyisoprene Rubber Composites Filled with Opalized White Tuff and Precipitated Silica. in Scientific World Journal. https://doi.org/10.1155/2014/913197
Samaržija-Jovanović S, Jovanović V, Marković G, Zeković IL, Marinović-Cincović M. Properties of Vulcanized Polyisoprene Rubber Composites Filled with Opalized White Tuff and Precipitated Silica. in Scientific World Journal. 2014;. doi:10.1155/2014/913197 .
Samaržija-Jovanović, Suzana, Jovanović, Vojislav, Marković, Gordana, Zeković, Ivana Lj., Marinović-Cincović, Milena, "Properties of Vulcanized Polyisoprene Rubber Composites Filled with Opalized White Tuff and Precipitated Silica" in Scientific World Journal (2014), https://doi.org/10.1155/2014/913197 . .