The effect of the structural order of isotactic polypropylene containing magnetically aligned nickel particles on its electrical resistivity

Masafumi Yamato, Shuhei Obayashi, Takashi Nishiyama, Hideo Horibe, Kohki Takahashi, Kazuo Watanabe

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The effect of the high order structure of an isotactic polypropylene (PP) composite on the resistivity of composites containing magnetically aligned Ni particles was studied. Only a small amount of particles needed to be added for the composite material to become conducting after heating while in a magnetic field. The Ni columns formed on applying the field were distorted by the formation of large PP spherulites. Changes to the crystallization process due to the addition of a nucleating agent gave rise to changes in the columnar structure, resulting in large changes in the resistivity of the composite material. Controlling the high order structure of the polymer matrix including its morphology is very important in order to be able to control the magnetically aligned Ni structure.

Original languageEnglish
Pages (from-to)6546-6551
Number of pages6
JournalPolymer
Volume55
Issue number25
DOIs
Publication statusPublished - 2014 Dec 1

Keywords

  • Isotactic polypropylene
  • Magnetic alignment structure
  • Ni particles

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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