Structural heterogeneity and dynamic mechanical relaxations of ethylene alpha-olefin copolymers

Authors
Matthews, RG Ward, IM Capaccio, G
Citation
Rg. Matthews et al., Structural heterogeneity and dynamic mechanical relaxations of ethylene alpha-olefin copolymers, J POL SC PP, 37(1), 1999, pp. 51-60
Citations number
19
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
ISSN journal
08876266 → ACNP
Volume
37
Issue
1
Year of publication
1999
Pages
51 - 60
Database
ISI
SICI code
0887-6266(19990101)37:1<51:SHADMR>2.0.ZU;2-Y
Abstract
Dynamic mechanical measurements are reported on two polyethylene copolymers with different types of comonomers and well;characterized comonomer distri butions. Measurements on both isotropic and oriented samples were undertake n over a wide frequency range. The mechanical anisotropy and activation ene rgies of the alpha and beta relaxations are consistent with the former rela ting to c-shear in the crystals, and the latter to interlamellar shear. (C) 1999 John Wiley & Sons, Inc.