The nature of microcrystalline formations and their correlation with the properties of ethylene-propylene rubbers

The existence of several microcrystalline zones in ethylene-propylene rubber with melting points in the 285–365°K range has been demonstrated, using DTA, calorimetry and wide angle X-ray methods. The influence of thermal prehistory on the behaviour of the low temperature crystalline modifications ha...

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Bibliographic Details
Published in:Polymer science USSR 1986, Vol.28 (7), p.1616-1621
Main Authors: Aliguliyev, R.M., Ovanesova, G.S., Khiteyeva, D.M., Oganyan, V.A.
Format: Article
Language:English
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Summary:The existence of several microcrystalline zones in ethylene-propylene rubber with melting points in the 285–365°K range has been demonstrated, using DTA, calorimetry and wide angle X-ray methods. The influence of thermal prehistory on the behaviour of the low temperature crystalline modifications has been studied. After annealing, the more stable ones are microcrystallites with melting points in the 308–315°K range. The presence of microcrystallites has a substantial effect on the thermo-oxidative and relaxation properties of the olefin rubbers.
ISSN:0032-3950
1878-268X
DOI:10.1016/0032-3950(86)90334-5