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Fabrication of polyelectrolyte multilayer films comprising nanoblended layers.

Authors
  • Cho, Jinhan
  • Quinn, John F
  • Caruso, Frank
Type
Published Article
Journal
Journal of the American Chemical Society
Publication Date
Mar 03, 2004
Volume
126
Issue
8
Pages
2270–2271
Identifiers
PMID: 14982407
Source
Medline
License
Unknown

Abstract

Polyelectrolyte multilayer thin films were prepared via the alternate deposition of poly(allylamine hydrochloride) (PAH) and a blend of poly(acrylic acid) (PAA) and poly(styrenesulfonate) (PSS). When the pH of the blend solution was 3.5, the presence of PAA in this solution significantly increased the total film thickness. With only 10 wt % PAA in the blend adsorption solution, a large increase in film thickness was observed (92 nm cf. 18 nm). It was also demonstrated that the total amount of PSS adsorbed was enhanced by the presence of PAA in the blend solution, showing that the blend solution composition influenced that of the multilayer films. Thin films prepared with nanoblended layers also showed improved pH stability, because they exhibited reduced film rearrangement upon exposure to acidic conditions (pH = 2.5).

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