Preferential orientation of crystallites spatially confined in lamellar microdomains of polyethylene-block-[atactic poly(propylene)]

Kazuo Sakurai, Seiji Shinkai, Masaya Ueda, Shinichi Sakurai, Shunji Nomura, Willam J. MacKnight, David J. Lohse

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Synchrotron small angle X-ray scattering (SAXS), wide angle X-ray scattering (WAXS), and transmission electron microscopy were carried out for an oriented polyethylene-block-[atactic poly(propylene)] with a molecular weight of 1.13 × 105 and a volume fraction of polyethylene of 0.5. Isothermal crystallization at 93°C did not destroy the pre-formed microdomain, however, with a higher crystallization temperature, the microdomain was more heavily deformed and more crystalline lamella grew. In WAXS profiles, preferential orientation of (020) reflection peak was observed, indicating that the crystalline lamella grew in parallel with the micro domain interface.

Original languageEnglish
Pages (from-to)1140-1143
Number of pages4
JournalMacromolecular rapid communications
Volume21
Issue number16
DOIs
Publication statusPublished - Nov 14 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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