Prolonged degradation of end-capped polyelectrolyte multilayer films

Takeshi Serizawa, Kyoko Iida, Hisao Matsuno, Kimio Kurita

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Cationic chitosan (CT) and anionic dextran sulfate (Dex) were layer-by-layer (LbL) assembled from aqueous solutions containing 1 M NaCl on a quartz crystal microbalance (QCM) substrate, and the original films ((CT-Dex)3-CT)) were end-capped with LbL assembly from CT solutions containing 1 M NaCl and Dex solutions without NaCl. The enzymatic degradation of films by chitosanase was quantitatively analyzed by QCM in terms of numbers of end-capping steps. The degradation of films end-capped with (Dex-CT)3 was considerably prolonged when compared to those end-capped with other end-capping steps. A mechanism for the prolonged degradation was proposed by quantitative QCM data and zeta potential results.

Original languageEnglish
Pages (from-to)407-413
Number of pages7
JournalPolymer Bulletin
Volume57
Issue number3
DOIs
Publication statusPublished - Jul 1 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Polymers and Plastics
  • Materials Chemistry

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