Hemispherical polymer nano-particles of polyisoprene-poly(methyl methacrylate) blend with core-shell structure

Atsunori Tajima, Takeshi Higuchi, Hiroshi Yabu, Masatsugu Shimomura

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


We show a simple preparation procedure of particles with unique shape and inner structures of polymer blend. Submicron sized particles consisting of polyisoprene (PI) and poly(methyl methacrylate) (PMMA) were prepared by adding a poor solvent (water) into a tetrahydrofuran (THF) solution of these polymers and following evaporation of THF. The diameter and shape of particles were controlled by changing the concentration of the solution. After selective staining of PI by osmium tetraoxide, particles were observed by scanning transmission electron microscopy (STEM). The observation showed the hemispherical particles with PI core and PMMA shell were formed. After dispersion of the stained particles into THF, the hemispherical particles of the cross-linked PI core were obtained by the selective dissolution of PMMA shell.

Original languageEnglish
Pages (from-to)332-334
Number of pages3
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Publication statusPublished - 2008 Feb 1


  • Nano-particle
  • Phase separation
  • Polymer blend
  • Self-organization

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry


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