Production of porous poly(ε-caprolactone)/silica hybrid membranes with patterned surface pores

Kwan Ha Shin, Young Hag Koh, Won Young Choi, Hyoun Ee Kim

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

This paper reports a novel way of synthesizing porous poly(ε- caprolactone) (PCL)/silica hybrid membranes with a patterned surface pores by casting a mixture containing a PCL solution and sol-gel derived silica sol at room temperature. When the initial TEOS content in relation to the PCL content in the mixture was ≥ 20 vol.%, a highly porous structure containing patterned surface pores, ∼ 40-70 μm in size, was formed successfully. The silica phase was hybridized uniformly with the PCL polymer without any noticeable phase separation, as confirmed by energy dispersive X-ray spectroscopy (EDS). The porosity increased from 4.5 to 39.2 vol.% with increasing initial TEOS content from 0 to 40 vol.%. However, the hybrid membranes prepared at an initial TEOS content of ≥ 20 vol.% showed a reasonably high tensile strength and elastic modulus, ranging from 7.6 to 5.0 MPa and 79 to 51 MPa, respectively.

Original languageEnglish
Pages (from-to)1903-1906
Number of pages4
JournalMaterials Letters
Volume65
Issue number12
DOIs
Publication statusPublished - 2011 Jun 30

Keywords

  • Mechanical properties
  • Nanocomposites
  • Polymers
  • Porosity
  • Sol-gel preparation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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