Studies of optical haze and surface morphology of blown polyethylene films using atomic force microscopy

P.F. Smith, I. Chun, G. Liu, D. Dimitrievich, J. Rasburn, G.J. Vancso*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

41 Citations (Scopus)

Abstract

Atomic force microscopy (AFM) has been used to examine the inner and outer surfaces of commercial blown polyethylene films. When this technique has been used, direct-space images of surface lamellae have been obtained, and the surface roughness determined. The haziness of the films has been measured, both in the as-produced state and when coated with suitable oil. Thus, both surface and bulk contributions to the apparent turbidity have been estimated. The aim of this study has been to correlate in turn the haziness, roughness, and surface morphology. Results obtained showed that the haze is related primarily to the surface roughness and can be reduced by lowering the frost line. AFM images unveiled lamellar features that were oriented predominantly in the transverse direction. The observed wide-angle X-ray diffraction (WAXD) intensities were consistent with an a-axis type of orientation.

Original languageEnglish
Pages (from-to)2129-2134
Number of pages6
JournalPolymer engineering and science
Volume36
Issue number16
DOIs
Publication statusPublished - 1 Jan 1996
Externally publishedYes

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