Results 321 to 330 of about 4,503,483 (380)
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Polymer, 1999
Pure gas transport properties of natural rubber (NR), epoxidised natural rubber (ENR) and their blends have been determined. The permeabilities of the pure polymers and blends were determined with nitrogen and oxygen. The relation between oxygen-to-nitrogen selectivity and the glass transition temperature has been studied.
T. Johnson, Sabu Thomas
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Pure gas transport properties of natural rubber (NR), epoxidised natural rubber (ENR) and their blends have been determined. The permeabilities of the pure polymers and blends were determined with nitrogen and oxygen. The relation between oxygen-to-nitrogen selectivity and the glass transition temperature has been studied.
T. Johnson, Sabu Thomas
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Journal of earthquake engineering, 2020
Over the last decade, significant efforts have been dedicated to develop novel low-cost seismic protection systems that could be used on a large scale in developing regions of the world.
D. Losanno +6 more
semanticscholar +1 more source
Over the last decade, significant efforts have been dedicated to develop novel low-cost seismic protection systems that could be used on a large scale in developing regions of the world.
D. Losanno +6 more
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ACS Sustainable Chemistry and Engineering, 2020
Natural rubber (NR) composite elastomers have been increasingly explored recently, because they are renewable and environment-friendly.
Shuangyang Li +3 more
semanticscholar +1 more source
Natural rubber (NR) composite elastomers have been increasingly explored recently, because they are renewable and environment-friendly.
Shuangyang Li +3 more
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Natural rubber blends with epoxidized natural rubber
Journal of Macromolecular Science, Part B, 1997Abstract Blends of NR with ENR have been prepared in full composition following the polymer blend technique. Basic properties (mastication behavior and thermal degradation of each rubber and Mooney viscosity, Flory-Huggins interaction parameters, and cure characteristics of the blends) of the uncured blends were determined, in addition to the reversion,
Sang Yup Lee, Byung Kyu Kim, Joon Kim
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Silicone rubber and natural rubber as biomaterials
Medical & Biological Engineering & Computing, 1980The roles of silicone rubber and natural rubber as biomaterials are contrasted, with silicone rubber being widely used and natural rubber having, as yet, found limited application. Relevant properties of both elastomers are described, applications are discussed and possible future developments are considered.
T. Gilchrist, J. M. Courtney
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, 2020
Thailand is an agricultural country, ranked as the top in the world for the production and export of natural rubber.
Apinun Buritatun +6 more
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Thailand is an agricultural country, ranked as the top in the world for the production and export of natural rubber.
Apinun Buritatun +6 more
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Hydrological consequences of natural rubber plantations in Southeast Asia
Land Degradation and Development, 2020Since the turn of the century, rubber plantations have been expanding their footprint across Southeast Asia in response to an increasing global demand for rubber products. Between 2000 and 2014, the area cultivated with rubber more than doubled.
D. Chiarelli +5 more
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The cyclization of natural rubber
Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1963Several methods of measuring the unsaturation remaining in natural rubber after cyclization have been compared. Approximate agreem ent was obtained with the reagents, perbenzoic acid, phenyl iododichloride and ozone; iodine chloride gave high values. Perbenzoicacid is considered the most satisfactory of these reagents. The unsaturation in some cyclized
J. Scanlan, W. F. Watson, D. F. Lee
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Rubber Chemistry and Technology, 1985
Abstract When natural rubber is epoxidized under carefully controlled conditions, it can be converted to a totally new polymer with some properties more akin to speciality rubbers and some properties that appear to be advantageous for tire treads. Three levels of epoxidation have been extensively evaluated.
I. R. Gelling, R. Newell, C. S. L. Baker
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Abstract When natural rubber is epoxidized under carefully controlled conditions, it can be converted to a totally new polymer with some properties more akin to speciality rubbers and some properties that appear to be advantageous for tire treads. Three levels of epoxidation have been extensively evaluated.
I. R. Gelling, R. Newell, C. S. L. Baker
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Infrared studies on natural rubber and aged natural rubber
Journal of Polymer Science, 1955AbstractIn the infrared absorption spectra of solutions of natural rubber in carbon tetrachloride, two new absorptions are observed, one at 6.52 μ and another at 8.2 μ. These bands disappear when films from the solution are examined. Possible origins of these bands are discussed and it is suggested that the absorption at 6.52 μ may be due to a ...
J. B. Pande +2 more
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