Morphology of polyethylene for power cable insulation: effects of antioxidant and crosslinking

Nilsson, U.H.; Dammert, R. C.; Campus, A.; Sneck, Asko; Jakosuo-Jansson, H.

doi:10.1109/icsd.1998.709301

Cited by 10 publications

(1 citation statement)

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“…Several studies relative to crystallization and morphology − of cross-linked polyethylene have shown that network density strongly influence crystallization rate, degree of crystallinity, and lamellar thickness. However, only few studies have considered variations of the unit cell parameters generated by cross-linking processes. − …”

Section: Introductionmentioning

confidence: 99%

Polyethylene Unit Cell and Crystallinity Variations as a Consequence of Different Cross-Linking Processes

Rizzo¹,

Baione²,

Guerra³

et al. 2001

Macromolecules

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Changes of crystallinity and unit cell parameters for a low-density polyethylene as a consequence of cross-linking by dicumyl peroxide and by electron beam irradiations are compared. Polyethylene samples cross-linked by irradiation in the solid state present variations essentially only of the a unit cell parameter while those cross-linked in the melt state present similar variations of both a and b unit cell parameters. A strict analogy with unit cell variations observed for ethene random copolymers with propene and with bulkier comonomers, respectively, is shown. This suggests inclusion of cross-links for solid-state cross-linked samples, which would lead to a gradual transformation from an orthorhombic to a pseudohexagonal phase, and exclusion of cross-links for melt state cross-linked samples, which would generate tensions at the orthorhombic crystallite interphases.

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