Effect of process parameters on the polymer mediated synthesis of silica at neutral ph

Siddharth Patwardhan, N Mukherjee, Stephen J. Clarson

Research output: Contribution to journalArticle

Abstract

We report herein the synthesis of well-defined silica structures at neutral pH and ambient conditions using poly(allylamine hydrochloride) (PAH), a cationically charged synthetic polymer, as a catalyst/template. Tetramethoxysilane (TMOS) was used as the precursor and the synthesis process parameters varied include TMOS pre-hydrolysis time (tP ), reaction time (tR), buffer, molecular weight of the polymer, TMOS concentration, polymer concentration and perturbation of the reaction mixture. It was found that the TMOS pre-hydrolysis time was an important parameter governing the resulting silica morphology along with the reaction time and the TMOS concentration. Characterization of the silica was performed using SEM, FTIR, EDS and XRD. The poly(allylamine hydrochloride), which was the catalyst/template, was found to be incorporated into the silica particles. These findings are of importance for understanding the role of polypeptides, in nature, and macromolecules, in general, that are capable of forming similar silica structures.
Original languageEnglish
Pages (from-to)54-54
JournalSilicon Chemistry
Volume1
Issue number1
DOIs
Publication statusPublished - 2002

Keywords

  • neutral ph
  • polymers
  • silica
  • silicon

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