1991
DOI: 10.1002/apmc.1991.051880116
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Highly active peroxides in the radical polymerization of ethylene under high pressure. Properties of the polymers

Abstract: Using highly active peroxide initiators, a number of polyethylene samples were prepared at low temperatures of 70-140°C and a pressure of 1900 bar. The average molecular weight and the melt flow index were adjusted by adding propionaldehyde as modifier. The characteristic properties of the samples as regards the molecular weight distribution, the average molecular weight, the frequency of long chain branching, the crystallinity and the density were determined.As expected, the polymers are characterized by dens… Show more

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Cited by 21 publications
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“…The parameter Δ H m and the melting points were derived from the second course of the DSC. The fusion enthalpy Δ H ° was estimated for a 100% crystalline polyethene to 292.9 J g −1 21…”
Section: Methodsmentioning
confidence: 99%
“…The parameter Δ H m and the melting points were derived from the second course of the DSC. The fusion enthalpy Δ H ° was estimated for a 100% crystalline polyethene to 292.9 J g −1 21…”
Section: Methodsmentioning
confidence: 99%