Cross-Linked Thermoplastic Blends of Polyethylene with an Elastomer 2. Some Structural Characteristics and Their Relationship with Mechanical Properties

Authors: Bocok, O.; Zicans, J.; Kalnins, I.

Source: Mechanics of Composite Materials, Volume 41, Number 4, July 2005 , pp. 371-382(12)

Publisher: Springer

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Abstract:

Results of an experimental investigation into the changes of some structural characteristics of binary blends of high-density polyethylene and low-density polyethylene with an elastomer (ethylene-propylene-dicyclopentadiene terpolymer, EPDM) in the course of gamma

-radiation and chemical cross-linking are reported for a wide range of component ratios. The data on changes in the crystallinity, density of the blends, content of the cross-linked part, as well the correlation of these characteristics with some mechanical properties, are discussed. Suggestions are put forward about the possibility of formation of a combined amorphous PE-EPDM phase with a higher structural arrangement than that in the individual components.

Keywords: polyethylene; ethylene-propylene-dicyclopentadiene terpolymer; polymer blend; radiation cross-linking; chemical cross-linking; density; crystallinity; extent of cross-linking; mechanical properties

Document Type: Research article

DOI: http://dx.doi.org/10.1007/s11029-005-0063-3

Affiliations: 1: Institute of Polymer Materials, Riga Technical University, Riga, LV-1048, Latvia,

Publication date: 2005-07-01