Results 171 to 180 of about 11,202 (203)
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Mechanical and thermal characterization of cis-polyisoprene and trans-polyisoprene blends
Polymer Bulletin, 2010Measurements of mechanical and thermal transport properties have been made on the blends of cis-polyisoprene (CPI) and trans-polyisoprene (TPI) prepared by a solution casting method. Characterization of these blends has been done using wide angle X-ray scattering.
Mahesh Baboo +3 more
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Macromolecules, 1984
Hydrogenation de polyisoprene lineaires anioniques en presence de palladium-carbonate de ...
J. T. Gotro, William W. Graessley
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Hydrogenation de polyisoprene lineaires anioniques en presence de palladium-carbonate de ...
J. T. Gotro, William W. Graessley
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2009
Abstract Properties of Special Interest High degree of stereoregularity in structure, presence of the reactive double bonds (unsaturation), strain-induced crystallization, high gum tensile strength, superior building tack, green stock strength, better processing, high strength in non-black formulations, hot tear resistance, retention of ...
Ruzhi Zhang, James E MarkAcronyms,
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Abstract Properties of Special Interest High degree of stereoregularity in structure, presence of the reactive double bonds (unsaturation), strain-induced crystallization, high gum tensile strength, superior building tack, green stock strength, better processing, high strength in non-black formulations, hot tear resistance, retention of ...
Ruzhi Zhang, James E MarkAcronyms,
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Synthetic Polyisoprene Rubbers
1981Synthetic cis-1,4-polyisoprene manufactured to a high degree of stereoregularity has become an important polymer for the rubber industry during the last decade. Assisted by considerable research and application development work, a selective usage pattern has emerged whereby the rubber is employed alone and in blends with other rubbers to exploit its ...
M. J. Shuttleworth, A. A. Watson
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Multiscale modeling of polyisoprene on graphite
The Journal of Chemical Physics, 2014The local dynamics and the conformational properties of polyisoprene next to a smooth graphite surface constructed by graphene layers are studied by a multiscale methodology. First, fully atomistic molecular dynamics simulations of oligomers next to the surface are performed.
Yogendra Narayan, Pandey +4 more
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Modification of synthetic polyisoprene
Polymer Science U.S.S.R., 1979Abstract The structure and properties of synthetic isoprene rubbers modified by introduction of various functional groups have been investigated, as well as the technological properties of the processing mixtures and the technical properties of the vulcanizates obtained from them.
L.Ye. Poluektova +4 more
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Confirmation on the compatibility between cis-1,4-polyisoprene and trans-1,4-polyisoprene
Polymer, 2018Abstract Because amorphous cis-1,4-polyisoprene(CPI) and crystalline trans-1,4-polyisoprene(TPI) are isomers, with similar refractive index, electron density and even glass transition temperatures, confirmation of miscibility is difficult by using most direct methods, such as phase contrast optical microscopy, small angle X-ray scattering (SAXS) and ...
Yingfei Wu +3 more
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Journal of Applied Polymer Science, 1965
The effects were studied of molecular weight, shear rate, and temperature on the viscous behavior of various linear, monodisperse polyisoprenes of about 90% cis-1,4 structure. Viscosities of from 1010-105 poise were measured on a double cone and plate viscometer while viscosities of 104-10−2 poise were measured on rotating cylinder viscometers.
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The effects were studied of molecular weight, shear rate, and temperature on the viscous behavior of various linear, monodisperse polyisoprenes of about 90% cis-1,4 structure. Viscosities of from 1010-105 poise were measured on a double cone and plate viscometer while viscosities of 104-10−2 poise were measured on rotating cylinder viscometers.
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2009
Abstract Properties of Special Interest TPIP resists abrasion, scuffing, and cutting; it is a tough, rigid, durable, and lightweight polymer at room temperature; it can be extruded, calendered, injection molded, and compression molded; it can be compounded with fillers, and used in blends with other polymers; resistant to ozone, alkalies,
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Abstract Properties of Special Interest TPIP resists abrasion, scuffing, and cutting; it is a tough, rigid, durable, and lightweight polymer at room temperature; it can be extruded, calendered, injection molded, and compression molded; it can be compounded with fillers, and used in blends with other polymers; resistant to ozone, alkalies,
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Journal of Polymer Science Part A: Polymer Chemistry, 1994
AbstractPolyisoprene (PIP) was found to react with trifluoroacetic acid (TFA) to give an adduct. Saponification of the ester gave a new alternating copolymer of ethylene and α‐methyl vinyl alcohol. TFA did not react with polybutadiene (PBD) under these conditions, thus providing a way to produce amphiphilic block copolymers from PBD‐b‐PIP. TFA addition
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AbstractPolyisoprene (PIP) was found to react with trifluoroacetic acid (TFA) to give an adduct. Saponification of the ester gave a new alternating copolymer of ethylene and α‐methyl vinyl alcohol. TFA did not react with polybutadiene (PBD) under these conditions, thus providing a way to produce amphiphilic block copolymers from PBD‐b‐PIP. TFA addition
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