Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing
Blends of natural rubber and styrene-butadiene rubber were prepared by solution mixing and vulcanized with a system sulfur-accelerator at 433 K and 443 K in order to study the vulcanization kinetic and the influence of the vulcanization temperature on the final structure of the blends. The kinetic o...
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2015
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00143057_v69_n_p50_Mansilla http://hdl.handle.net/20.500.12110/paper_00143057_v69_n_p50_Mansilla |
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paper:paper_00143057_v69_n_p50_Mansilla2023-06-08T14:36:59Z Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing NR PALS Rubber blends SBR Swelling Vulcanization Kinetics Mixing Positron annihilation spectroscopy Styrene Swelling Vulcanization Micro-structural properties NR PALS Positron annihilation lifetime spectroscopy Rubber blends SBR Structure of the blend Styrene butadiene rubber Rubber Blends of natural rubber and styrene-butadiene rubber were prepared by solution mixing and vulcanized with a system sulfur-accelerator at 433 K and 443 K in order to study the vulcanization kinetic and the influence of the vulcanization temperature on the final structure of the blends. The kinetic of vulcanization was analyzed under the frame of the Han's model, which takes into account the reversion effect once the time to achieve the maximum torque in the rheometer curves is surpassed. The crosslink density was also determined in all samples by means of swelling in solvent. The average free nanohole volume was estimated using positron annihilation lifetime spectroscopy. When changing the vulcanization temperature of the blends, remarkable changes in the crosslink densities and the free nanohole volumes were detected. Furthermore, a correlation between the average fractional free nanohole volume and the fraction of polymer in the swollen state was established. © 2015 Elsevier Ltd. All rights reserved. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00143057_v69_n_p50_Mansilla http://hdl.handle.net/20.500.12110/paper_00143057_v69_n_p50_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 Kinetics Mixing Positron annihilation spectroscopy Styrene Swelling Vulcanization Micro-structural properties NR PALS Positron annihilation lifetime spectroscopy Rubber blends SBR Structure of the blend Styrene butadiene rubber Rubber |
| spellingShingle |
NR PALS Rubber blends SBR Swelling Vulcanization Kinetics Mixing Positron annihilation spectroscopy Styrene Swelling Vulcanization Micro-structural properties NR PALS Positron annihilation lifetime spectroscopy Rubber blends SBR Structure of the blend Styrene butadiene rubber Rubber Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing |
| topic_facet |
NR PALS Rubber blends SBR Swelling Vulcanization Kinetics Mixing Positron annihilation spectroscopy Styrene Swelling Vulcanization Micro-structural properties NR PALS Positron annihilation lifetime spectroscopy Rubber blends SBR Structure of the blend Styrene butadiene rubber Rubber |
| description |
Blends of natural rubber and styrene-butadiene rubber were prepared by solution mixing and vulcanized with a system sulfur-accelerator at 433 K and 443 K in order to study the vulcanization kinetic and the influence of the vulcanization temperature on the final structure of the blends. The kinetic of vulcanization was analyzed under the frame of the Han's model, which takes into account the reversion effect once the time to achieve the maximum torque in the rheometer curves is surpassed. The crosslink density was also determined in all samples by means of swelling in solvent. The average free nanohole volume was estimated using positron annihilation lifetime spectroscopy. When changing the vulcanization temperature of the blends, remarkable changes in the crosslink densities and the free nanohole volumes were detected. Furthermore, a correlation between the average fractional free nanohole volume and the fraction of polymer in the swollen state was established. © 2015 Elsevier Ltd. All rights reserved. |
| title |
Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing |
| title_short |
Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing |
| title_full |
Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing |
| title_fullStr |
Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing |
| title_full_unstemmed |
Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing |
| title_sort |
influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing |
| publishDate |
2015 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00143057_v69_n_p50_Mansilla http://hdl.handle.net/20.500.12110/paper_00143057_v69_n_p50_Mansilla |
| _version_ |
1768541734198837248 |