pH-Responsive Properties of Hollow Polyelectrolyte Microcapsules Templated on Various Cores
- 24 July 2004
- journal article
- Published by American Chemical Society (ACS) in Langmuir
- Vol. 20 (17), 7265-7269
- https://doi.org/10.1021/la049706n
Abstract
Hollow polyelectrolyte microcapsules made of poly(allylamine hydrochloride) and sodium poly(styrene sulfonate), templated on various cores, manganese and calcium carbonate particles or polystyrene latexes, were investigated. The polyelectrolyte multilayers respond to a change of pH, leading to a swelling of the capsules in basic conditions and a further shrinking when the pH is reduced to acidic. The nature of the core and the subsequent dissolution process have an influence on this pH responsiveness, and the structuring effect of tetrahydrofuran on the multilayers has been demonstrated. Increasing the molecular weight of the polymers or the number of layers causes also a rigidification of the structure and modifies the pH response.This publication has 24 references indexed in Scilit:
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