Dynamic study of free volume properties in polyethylene/styrene butadiene rubber blends by positron annihilation lifetime method

2009 ◽  
Vol 113 (5) ◽  
pp. 3228-3235 ◽  
Author(s):  
N. Mostafa ◽  
E. Hassan Ali ◽  
M. Mohsen
Keyword(s):  
Positron Annihilation ◽  
Free Volume ◽  
Dynamic Study ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Positron Annihilation Lifetime ◽  
Rubber Blends ◽  
Volume Properties ◽  
Styrene Butadiene

Free Volume of Montmorillonite/Styrene-Butadiene Rubber Nanocomposites Estimated by Positron Annihilation Lifetime Spectroscopy

2004 ◽  
Vol 25 (23) ◽  
pp. 1973-1978 ◽  
Author(s):  
Yi-Qing Wang ◽  
You-Ping Wu ◽  
Hui-Feng Zhang ◽  
Li-Qun Zhang ◽  
Bo Wang ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Free Volume ◽  
Positron Annihilation Lifetime Spectroscopy ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Positron Annihilation Lifetime ◽  
Rubber Nanocomposites ◽  
Styrene Butadiene

Positron annihilation spectroscopic characterization of free-volume defects and their correlations with the mechanical and transport properties of SBR–PMMA interpenetrating polymer networks

2020 ◽  
Vol 22 (32) ◽  
pp. 18169-18182
Author(s):  
Jose James ◽  
George V. Thomas ◽  
Akhil Punneri Madathil ◽  
P. M. G. Nambissan ◽  
Nandakumar Kalarikkal ◽  
...  
Keyword(s):  
Transport Properties ◽  
Positron Annihilation ◽  
Polymer Networks ◽  
Spectroscopic Characterization ◽  
Interpenetrating Polymer Networks ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Positron Annihilation Lifetime ◽  
Styrene Butadiene

Positron annihilation lifetime and coincidence doppler broadening spectroscopic characterization of styrene butadiene rubber – poly(methyl methacrylate) interpenetrating polymer networks is performed and correlations with the morphological, mechanical and transport properties are found.

Temperature dependence on free volume in cured natural rubber and styrene-butadiene rubber blends

2011 ◽  
Vol 83 (5) ◽  
Author(s):  
W. Salgueiro ◽  
A. Somoza ◽  
L. Silva ◽  
G. Consolati ◽  
F. Quasso ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Temperature Dependence ◽  
Free Volume ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Blends ◽  
Styrene Butadiene

Characterization of Sulfur-Cured Styrene-Butadiene Copolymer Rubbers and Their Polybutadiene Blends

1970 ◽  
Vol 43 (6) ◽  
pp. 1332-1339 ◽  
Author(s):  
J. K. Clark ◽  
R. A. Scott
Keyword(s):  
Carbon Disulfide ◽  
High Speed ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Absorption Bands ◽  
Rubber Blends ◽  
Cast Films ◽  
Micro Structures ◽  
Styrene Butadiene

Abstract Dissolution of sulfur-cured, carbon black-loaded copolymers and their blends with cis-1,4-polybutadiene (PBD) are brought about by boiling with o-dichlorobenzene which contains a small amount of 2,2′-dibenzamidodiphenyl disulfide. The resulting slurries are subjected to a sequence of separations which include high-speed centrifugation to remove solids, and solvent precipitation followed by filtration to isolate the precipitates. The precipitates are washed with solvent to remove soluble organic materials followed by carbon disulfide washing to dissolve the polymers. Cast films of the polymers are obtained by evaporating the carbon disulfide washings onto sodium chloride discs. The infrared spectra of the cast films of these preparations are very similar to those of their respective polymers prior to loading and curing. Calculations for relative concentrations of bound styrene and PBD micro-structures permit nominal identification of the kinds of styrene-butadiene rubber and the amounts of cis-1,4-PBD used in a cured rubber formulation. Absorption bands used are near 3.35 μ for cis-1,4-PBD, 6.65 μ for bound styrene, 10.35 μ for trans-1,4-PBD; and 11.0 μ for vinyl-1,2-PBD. Efforts are being made to improve the data by using a grating infrared instrument and also to extend the calibrations to include other rubber blends.

Gamma irradiation of (styrene butadiene rubber)/(devulcanized waste rubber) blends modified by organoclay

2015 ◽  
Vol 24 (1) ◽  
pp. 50-57 ◽  
Author(s):  
E. S. Fathy ◽  
Hoda H. Saleh ◽  
Mona Y. Elnaggar ◽  
Zakaria I. Ali
Keyword(s):  
Gamma Irradiation ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Blends ◽  
Waste Rubber ◽  
Styrene Butadiene

Novel modification of styrene butadiene rubber/acrylic rubber blends to improve mechanical, dynamic mechanical, and swelling behavior for oil sealing applications

2021 ◽  
pp. 096739112110313
Author(s):  
Ahmed Abdel-Hakim ◽  
Soma A el-Mogy ◽  
Ahmed I Abou-Kandil
Keyword(s):  
Mechanical Properties ◽  
Crosslink Density ◽  
Physical And Mechanical Properties ◽  
Dynamic Mechanical Properties ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Blends ◽  
Dynamic Mechanical ◽  
Oil Resistance ◽  
Styrene Butadiene

Blending of rubber is an important route to modify properties of individual elastomeric components in order to obtain optimum chemical, physical, and mechanical properties. In this study, a novel modification of styrene butadiene rubber (SBR) is made by employing acrylic rubber (ACM) to obtain blends of outstanding mechanical, dynamic, and oil resistance properties. In order to achieve those properties, we used a unique vulcanizing system that improves the crosslink density between both polymers and enhances the dynamic mechanical properties as well as its resistance to both motor and break oils. Static mechanical measurements, tensile strength, elongation at break, and hardness are improved together with dynamic mechanical properties investigated using dynamic mechanical analyses. We also proposed a mechanism for the improvement of crosslink density and consequently oil resistance properties. This opens new opportunities for using SBR/ACM blends in oil sealing applications that requires rigorous mechanical and dynamic mechanical properties.

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