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Controlling Network–Brush Interactions to Achieve Switchable Adhesion
Author(s) -
La Spina Rita,
Tomlinson Michael R,
RuizPérez Lorena,
Chiche Arnaud,
Langridge Sean,
Geoghegan Mark
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200701796
Subject(s) - brush , adhesion , microfluidics , substrate (aquarium) , nanotechnology , drug delivery , chemistry , chemical engineering , materials science , organic chemistry , composite material , engineering , oceanography , geology
Make up and break up : A pH‐responsive system that displays switchable adhesion in situ is described. Polyacid gels and polybases grafted to a substrate (brushes) strongly adhere in water, but in an acidic environment, the gel and brush dissociate. Adhesion can be controlled by environmental acidity and the process can be repeated several times. Such adhesion may be used in actuators, microfluidics, drug delivery, or personal‐care products.