Frozen cyclohexane-in-water emulsion as a sacrificial template for the synthesis of multilayered polyelectrolyte microcapsules

Sachin Khapli, Jin Kim, Jin Montclare, Rastislav Levicky, Maurizio Porfiri, Stavroula Sofou

Research output: Contribution to journalArticle

Abstract

This paper reports the application of frozen cyclohexane-in-water emulsions as sacrificial templates for the fabrication of hollow microcapsules through layer-by-layer assembly of polyelectrolytes, poly(styrenesulfonate sodium salt), and poly(allylamine hydrochloride). Extraction of the cyclohexane phase from frozen emulsions stabilized with 11 polyelectrolyte layers by compatibilization with 30% v/v ethanol leads to the formation of water-filled microcapsules while preserving the spherical geometry. The majority of microcapsules ( >90%) are prepared with intact polyelectrolyte membranes as measured by their deformation induced by osmotic pressure. This work provides a new route for the synthesis of hollow multilayered microcapsules under mild operating conditions.

Original languageEnglish (US)
Pages (from-to)9728-9733
Number of pages6
JournalLangmuir
Volume25
Issue number17
DOIs
StatePublished - Sep 1 2009

Fingerprint

Cyclohexane
Emulsions
Polyelectrolytes
cyclohexane
emulsions
Capsules
templates
Water
hollow
synthesis
water
osmosis
Compatibilizers
hydrochlorides
preserving
Ethanol
ethyl alcohol
assembly
routes
Sodium

ASJC Scopus subject areas

  • Electrochemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Science(all)
  • Spectroscopy

Cite this

Frozen cyclohexane-in-water emulsion as a sacrificial template for the synthesis of multilayered polyelectrolyte microcapsules. / Khapli, Sachin; Kim, Jin; Montclare, Jin; Levicky, Rastislav; Porfiri, Maurizio; Sofou, Stavroula.

In: Langmuir, Vol. 25, No. 17, 01.09.2009, p. 9728-9733.

Research output: Contribution to journalArticle

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