Growth of Polyglycidol in Porous TiO2 Nanoparticle Networks via Initiated Chemical Vapor Deposition: Probing Polymer Confinement under High Nanoparticle Loading

Chia Yun Hsieh, Kenneth K.S. Lau

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Initiated chemical vapor deposition (iCVD) enables the uniform growth of polyglycidol (PGL) within mesoporous layers of TiO2 nanoparticle networks. Through the cationic ring opening polymerization of glycidol, conformal deposition of PGL by iCVD results in up to 91% of the available pore space being filled. This yields polymer nanocomposites with high nanoparticle loading of 82 wt% and 54 vol%. The glass transition of the PGL nanocomposite is found to increase significantly by 50C-60C compared to the bulk PGL polymer. This marked temperature rise has been attributed to significant hydrogen bonding interaction of the oxygen and hydroxyl groups in the polymer with the hydroxyl groups on the surface of the TiO2 nanoparticles. Such interactions under polymer confinement are only possible as a result of the tight integration of the polymer and inorganic materials afforded by the iCVD approach.

Original languageEnglish (US)
Article number1500341
JournalAdvanced Materials Interfaces
Volume2
Issue number17
DOIs
StatePublished - Nov 23 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering

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