A small-angle x-ray study on polymer films containing crystalline particles of fatty acid

Yousuke Sakamoto, Shingo Hane, Kazunori Ogaguchi, Yuusuke Wakabayashi, Kyoji Tsutsui, Nobuyoshi Wakabayashi

Research output: Contribution to journalArticlepeer-review

Abstract

Small-angle and wide angle X-ray scattering studies were carried out on polymer thin films containing microcrystalline behenic acid. Measurements were made on samples in various optical states prepared by appropriate heat treatment. The results were consistent with the picture which presupposes the existence of voids around the crystallites when the composite film is in the opaque state. It was found that, upon cooling, molten behenic acid crystallizes in B or E polymorph, but not in C polymorph. It was concluded that the crystallization temperature for the C form is very low for small particles (0.2-2 μm) so that the molten BA, upon cooling, becomes unstable due to the formation of the crystalline state of the B form at a temperature above the crystallization temperature of the C-form.

Original languageEnglish
Pages (from-to)5735-5740
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume42
Issue number9 A
Publication statusPublished - 2003 Sep 1
Externally publishedYes

Keywords

  • Behenic acid
  • Microcrystal
  • Polymer film
  • Polymorphs
  • SAXS

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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