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Soluble Microcapsules Assembled Stepwise from Weak Polyelectrolytes Using Acid‐Decomposable Cores
Author(s) -
Gao C.Y.,
Möhwald H.,
Shen J.C.
Publication year - 2003
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200304667
Subject(s) - polyelectrolyte , materials science , template , melamine resin , chemical engineering , melamine , nanotechnology , polymer chemistry , polymer , composite material , engineering , coating
Decomposable microcapsules with tunable permeability, loading, and release properties—with potential applications as chemical reservoirs and for controlled drug release—have been fabricated by assembly of weak polyelectrolytes on melamine formaldehyde templates followed by removal of the cores at low pH by precise control of the time of acid treatment. The Figure shows capsules before (left) and after (right) treatment with 0.1 M HCl.