Novel strategy for tailoring of SiO2 and TiO2 nanoparticle surfaces with poly(ε-caprolactone)

Bunyamin Karagoz, Giancarlo Galli, Hakan Durmaz, Gurkan Hizal, Umit Tunca, Niyazi Bicak*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A novel strategy was developed for tailoring of SiO2 and TiO2 nanoparticle surfaces with poly(ε-caprolactone) (PCL). Thus, a self-curable polyester, poly(2-hydroxypropylene maleate) was adsorbed on the nanoparticle surfaces and heated to 180∈°C to give a cross-linked polyester layer with residual hydroxyalkyl groups on their surfaces. Surface-initiated polymerization of ε-caprolactone from hydroxyalkyl groups on the surfaces yielded core-shell nanoparticles with cross-linked core and PCL shells (22.2-71.4%). The organic shell layers around the nanoparticle cores were evidenced by transmission electron microscopy, dynamic light scattering, and thermogravimetric analyses techniques. The core-shell nanoparticles were then employed in preparing the stable and the homogenous dispersions with poly(methyl methacrylate-stat-butyl acrylate) solutions. An application of the solutions onto glass substrates yielded uniform and nearly transparent free standing films (40-60 μm) with good homogeneity as inferred from scanning electron microscopy pictures.

Original languageEnglish
Pages (from-to)535-542
Number of pages8
JournalColloid and Polymer Science
Volume288
Issue number5
DOIs
Publication statusPublished - Mar 2010

Keywords

  • Adsorption
  • Nanoparticle
  • Poly(ε-caprolactone)
  • Surface modification
  • Surface-initiated polymerization
  • Unsaturated polyester

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