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Modulating Rheological Properties of Supramolecular Networks by pH‐Responsive Double‐Axle Intrusion into γ‐Cyclodextrin
Author(s) -
Joung Y.K.,
Ooya T.,
Yamaguchi M.,
Yui N.
Publication year - 2007
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.200600604
Subject(s) - rheology , materials science , viscoelasticity , supramolecular chemistry , ethylene glycol , cyclodextrin , ethyleneimine , chemical engineering , polymer chemistry , organic chemistry , polymer , chemistry , composite material , molecule , engineering
A pH‐responsive supramolecular network formed from γ‐cyclodextrin and linear poly(ethylene glycol)‐ block ‐poly(ethyleneimine) (PEG‐ b ‐PEI) copolymers (see figure) by double‐axle intrusion (DI) can modulate its rheological properties in response to pH changes. The formation of the DI system induces a drastic increase in the rheological properties even under very diluted conditions. The DI system shows significantly reduced viscoelastic properties at low pH.