Preparation of polymer nanoparticles with hierarchic structures

Hiroshi Yabu, T. Higuchi, Masatsugu Shimomura

Research output: Contribution to conferencePaper

Abstract

Block-copolymer nanoparticles with lamellar phase-separation structures have been prepared by a slow-precipitation process. Regular-sized poly(styrene-b-isoprene) nanoparticles are formed after evaporation of a good solvent from a polymer solution containing a non-volatile poor solvent and a volatile good solvent. Scanning transmission electron microscopy (STEM) reveals lamellae structures were formed in the nanoparticles. Energy dispersive X-ray photoelectron spectroscopy (EDX) reveals that these microstructures were formed by micro-phase separation of block-copolymers. Furthermore, the size of micro-phase separation structure can be controlled by changing the segment ratio between polystyrene and polyisoprene.

Original languageEnglish
Pages3922-3923
Number of pages2
Publication statusPublished - 2005 Dec 1
Event54th SPSJ Symposium on Macromolecules - Yamagata, Japan
Duration: 2005 Sep 202005 Sep 22

Other

Other54th SPSJ Symposium on Macromolecules
CountryJapan
CityYamagata
Period05/9/2005/9/22

Keywords

  • Block-copolymer
  • Hierarchic structures
  • Micro phase separation
  • Nanoparticles
  • Self-organization

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Yabu, H., Higuchi, T., & Shimomura, M. (2005). Preparation of polymer nanoparticles with hierarchic structures. 3922-3923. Paper presented at 54th SPSJ Symposium on Macromolecules, Yamagata, Japan.