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Phase structural analyses of polyethylene extrusion coatings on high‐density papers. I. Monoclinic crystallinity
Author(s) -
Furuheim Knut Magne,
Axelson David E.,
Antonsen Henrik W.,
Helle Torbjørn
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.13184
Subject(s) - crystallinity , monoclinic crystal system , materials science , polyethylene , high density polyethylene , crystallite , composite material , extrusion , polymer , layer (electronics) , chemical engineering , polymer chemistry , crystallography , crystal structure , chemistry , metallurgy , engineering
In the present work the morphology of high‐density polyethylene (HDPE) extrusion coating layer on high‐density paper (HDP) has been investigated. An uneven layer with a high content of crystallinity against the paper surface was discovered. The methods applied were solid‐state 13 C NMR Spectroscopy and Atomic Force Microscopy. The highly crystalline layer was found to be mainly monoclinic crystallinity. The formation of the monoclinic crystallites was probably initiated by orientation of the polyethylene molecules by drawing, adhesion to the fibrous paper surface, and pressure. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 218–225, 2004