Grazing incidence X-ray diffraction study on surface crystal structure of polyethylene thin films

Hirohiko Yakabe, Keiji Tanaka, Toshihiko Nagamura, Sono Sasaki, Osami Sakata, Atsushi Takahara, Tisato Kajiyama

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

Crystal structure in thin films of melt-crystallized and annealed polyethylene (PE) was examined by grazing incidence X-ray diffraction measurements. Choosing appropriate incident angles of X-rays to the films, surface and bulk molecular aggregation states were successfully extracted. Consequently, it was found that chain packing structure in the surface region was different from that in the bulk one. Based on paracrystalline analysis for the (110) reflection and its higher-order ones of PE orthorhombic crystal, it was clarified that the ordering for the crystalline lattice was lower in the surface region. Also, apparent crystallinity in the surface was lower than the bulk one. These results indicate that disordered crystallites were preferentially formed in the surface region.

Original languageEnglish
Pages (from-to)213-222
Number of pages10
JournalPolymer Bulletin
Volume53
Issue number3
DOIs
Publication statusPublished - Jan 1 2005

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Polymers and Plastics
  • Materials Chemistry

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