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Crosslink Densities and Phase Morpholgies in Dynamically Vulcanized TPEs
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1995
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Materials ScienceCrosslink DensityPolymer MaterialEngineeringCross-linkCrosslink DensitiesPolymer ScienceMechanical EngineeringPolymer CharacterizationPolymer PropertyPolymer AnalysisSoft MatterPolymer ModelingPolymer ChemistryNatural Rubber/polypropylene
Abstract Recent developments in characterization techniques have permitted estimation of the crosslink density attained in dynamically vulcanized thermoplastic elastomers. The range of techniques available for investigation of the phase morphology of this type of TPE has also increased. The characterization of experimental TPEs based on natural rubber/polypropylene and EPDM/polypropylene is reported here. A combination of several optical and electron microscopy techniques were employed. Crosslink densities estimated by swollen-state NMR spectroscopy are presented and are corroborated by estimates from a network visualization technique for TPEs.