Natural rubber/styrene-butadiene rubber blends prepared by solution mixing: Influence of vulcanization temperature using a Semi-EV sulfur curing system on the microstructural properties
Blends of natural rubber (NR) and styrene-butadiene rubber (SBR) were prepared by solution mixing and vulcanized with sulfur and accelerator in a Semi-EV system at 433 K and 443 K in order to study the vulcanization kinetic and the influence of vulcanization temperature on final structure of the ble...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_01429418_v63_n_p150_Mansilla |
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todo:paper_01429418_v63_n_p150_Mansilla2023-10-03T14:59:11Z Natural rubber/styrene-butadiene rubber blends prepared by solution mixing: Influence of vulcanization temperature using a Semi-EV sulfur curing system on the microstructural properties Mansilla, M.A. Marzocca, A.J. Macchi, C. Somoza, A. NR PALS Rubber blends SBR Swelling Vulcanization Curing Mixing Positron annihilation spectroscopy Rheometers Styrene Sulfur Swelling Vulcanization Cross-link densities Fractional free volume Micro-structural properties PALS Positron annihilation lifetime spectroscopy Rubber blends Structure of the blend Styrene butadiene rubber Rubber Blends of natural rubber (NR) and styrene-butadiene rubber (SBR) were prepared by solution mixing and vulcanized with sulfur and accelerator in a Semi-EV system at 433 K and 443 K in order to study the vulcanization kinetic and the influence of vulcanization temperature on final structure of the blends. The vulcanization kinetic studied through the variation in rheometer curves was analyzed using the Ding and Leonov model, which takes into account the reversion effect during the cure process. The average free nanohole volume and the fractional free volume of samples with different NR/SBR ratio were estimated using positron annihilation lifetime spectroscopy (PALS). Also, the crosslink density was determined by means of swelling tests in a solvent. For all the compounds, a correlation between the free nanohole volume and the delta torque obtained from the respective rheometer curves was established. © 2017 Elsevier Ltd JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01429418_v63_n_p150_Mansilla |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
NR PALS Rubber blends SBR Swelling Vulcanization Curing Mixing Positron annihilation spectroscopy Rheometers Styrene Sulfur Swelling Vulcanization Cross-link densities Fractional free volume Micro-structural properties PALS Positron annihilation lifetime spectroscopy Rubber blends Structure of the blend Styrene butadiene rubber Rubber |
| spellingShingle |
NR PALS Rubber blends SBR Swelling Vulcanization Curing Mixing Positron annihilation spectroscopy Rheometers Styrene Sulfur Swelling Vulcanization Cross-link densities Fractional free volume Micro-structural properties PALS Positron annihilation lifetime spectroscopy Rubber blends Structure of the blend Styrene butadiene rubber Rubber Mansilla, M.A. Marzocca, A.J. Macchi, C. Somoza, A. Natural rubber/styrene-butadiene rubber blends prepared by solution mixing: Influence of vulcanization temperature using a Semi-EV sulfur curing system on the microstructural properties |
| topic_facet |
NR PALS Rubber blends SBR Swelling Vulcanization Curing Mixing Positron annihilation spectroscopy Rheometers Styrene Sulfur Swelling Vulcanization Cross-link densities Fractional free volume Micro-structural properties PALS Positron annihilation lifetime spectroscopy Rubber blends Structure of the blend Styrene butadiene rubber Rubber |
| description |
Blends of natural rubber (NR) and styrene-butadiene rubber (SBR) were prepared by solution mixing and vulcanized with sulfur and accelerator in a Semi-EV system at 433 K and 443 K in order to study the vulcanization kinetic and the influence of vulcanization temperature on final structure of the blends. The vulcanization kinetic studied through the variation in rheometer curves was analyzed using the Ding and Leonov model, which takes into account the reversion effect during the cure process. The average free nanohole volume and the fractional free volume of samples with different NR/SBR ratio were estimated using positron annihilation lifetime spectroscopy (PALS). Also, the crosslink density was determined by means of swelling tests in a solvent. For all the compounds, a correlation between the free nanohole volume and the delta torque obtained from the respective rheometer curves was established. © 2017 Elsevier Ltd |
| format |
JOUR |
| author |
Mansilla, M.A. Marzocca, A.J. Macchi, C. Somoza, A. |
| author_facet |
Mansilla, M.A. Marzocca, A.J. Macchi, C. Somoza, A. |
| author_sort |
Mansilla, M.A. |
| title |
Natural rubber/styrene-butadiene rubber blends prepared by solution mixing: Influence of vulcanization temperature using a Semi-EV sulfur curing system on the microstructural properties |
| title_short |
Natural rubber/styrene-butadiene rubber blends prepared by solution mixing: Influence of vulcanization temperature using a Semi-EV sulfur curing system on the microstructural properties |
| title_full |
Natural rubber/styrene-butadiene rubber blends prepared by solution mixing: Influence of vulcanization temperature using a Semi-EV sulfur curing system on the microstructural properties |
| title_fullStr |
Natural rubber/styrene-butadiene rubber blends prepared by solution mixing: Influence of vulcanization temperature using a Semi-EV sulfur curing system on the microstructural properties |
| title_full_unstemmed |
Natural rubber/styrene-butadiene rubber blends prepared by solution mixing: Influence of vulcanization temperature using a Semi-EV sulfur curing system on the microstructural properties |
| title_sort |
natural rubber/styrene-butadiene rubber blends prepared by solution mixing: influence of vulcanization temperature using a semi-ev sulfur curing system on the microstructural properties |
| url |
http://hdl.handle.net/20.500.12110/paper_01429418_v63_n_p150_Mansilla |
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