Fabrication of block copolymer particles with nano-sized periodic structures

Takeshi Higuchi, Hiroshi Yabu, Masatsugu Shimomura

Research output: Contribution to conferencePaperpeer-review


It is known that block copolymers are formed micro-phase separation structures in thin films. We have reported that nano-particles can be prepared by adding a poor solvent (i.e. water) into a polymer solution (i.e. tetrahydrofran solution). After evaporation of the good solvent, nano-particles dispersed in the poor solvent were obrained. In this study, we prepared block copolymer (poly(styrene-block-isoprene)) particles by using this method. After selective staining of isoprene double bonds with OsO4, particles were observed by scanning transmission electron microscopy (STEM). We observed periodic micro-phase separation structures on the surface of the particles. The detail nano-sized phase separation structures on the surface of particles will be discussed.

Original languageEnglish
Number of pages1
Publication statusPublished - 2005
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: 2005 May 252005 May 27


Conference54th SPSJ Annual Meeting 2005


  • Block copolymer
  • Nano-particles
  • Phase separation
  • Self-organization


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