Results 251 to 260 of about 490,704 (306)
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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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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 +2 more
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2009
Natural rubber, India rubber and caoutchouc are all names for the solid elastic material isolated, one way or another, from the ‘milk’ or latex of Hevea brasiliensis, and various other tropical plants like Castilloa elastica. Natural rubber and natural rubber products have been known to the ancient cultures of Amazonia and Mesoamerica since time ...
Vaysse, Laurent +3 more
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Natural rubber, India rubber and caoutchouc are all names for the solid elastic material isolated, one way or another, from the ‘milk’ or latex of Hevea brasiliensis, and various other tropical plants like Castilloa elastica. Natural rubber and natural rubber products have been known to the ancient cultures of Amazonia and Mesoamerica since time ...
Vaysse, Laurent +3 more
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Disease-a-Month, 2016
Natural rubber latex allergy was identified as an increasingly significant health care problem in the late 1980s. Though the incidence of latex allergy has decreased in the United States over the last several years, 150,000 to 1 million healthcare workers and over 15 million people worldwide still suffer from latex allergy.
Steven L, Kahn +3 more
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Natural rubber latex allergy was identified as an increasingly significant health care problem in the late 1980s. Though the incidence of latex allergy has decreased in the United States over the last several years, 150,000 to 1 million healthcare workers and over 15 million people worldwide still suffer from latex allergy.
Steven L, Kahn +3 more
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Cryoground Rubber-Natural Rubber Blends
Rubber Chemistry and Technology, 1984Abstract Addition of cryoground rubber (CGR) causes changes in curing characteristics (decrease in Mooney scorch time, optimum cure time, and reversion time) and shows a detrimental effect on most of the vulcanizate properties (tensile, resilience, flex, hysteresis, set, and abrasion).
A. A. Phadke +2 more
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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.
J M, Courtney, T, Gilchrist
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Properties of natural rubber latex-compatibilized natural rubber/recycled chloroprene rubber blends
Journal of Elastomers & Plastics, 2016The effect of natural rubber latex (NRL) on the properties of natural rubber/recycled chloroprene rubber (NR/rCR) blends was investigated. The properties of NR/rCR-NRL blends were compared with those of NR/rCR blends without the NRL. The addition of NRL showed an improvement in tensile strength, elongation at break, fatigue life, and swelling ...
SZ Salleh, H Ismail, Z Ahmad
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Natural and Synthetic Rubber. VII. Fractional Precipitation of Natural Rubber
Rubber Chemistry and Technology, 1931Abstract Temperature—concentration diagrams are given of the systems natural rubber—alcohol—benzene, pure rubber—alcohol—benzene and synthetic rubber—alcohol—benzene. A method based on these diagrams is given for the separation of nitrogen-free rubber hydrocarbon by fractional precipitation of natural rubber from a mixture of alcohol and ...
Thomas. Midgley +2 more
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TENSILE PROPERTY OF EPOXIDIZED NATURAL RUBBER/NATURAL RUBBER BLENDS
Polymer-Plastics Technology and Engineering, 2000The tensile strength and elongation at break of epoxidized natural rubber (ENR) blended with natural rubber (NR) was studied. ENR 25, ENR 50, and one grade of natural rubber (SMR L) were used as the elastomers. The composition of ENR was varied from 0% to 100% rubber.
B. T. POH, G. K. KHOK
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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 ...
Sharda Dasgupta +2 more
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