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Surface Structure of Organoclays
Author(s) -
Heinz Hendrik,
Suter Ulrich W.
Publication year - 2004
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.200352747
Subject(s) - mica , homogeneous , alkyl , alkali metal , surface (topology) , materials science , chemical physics , crystallography , mineralogy , polymer chemistry , chemistry , chemical engineering , thermodynamics , composite material , organic chemistry , geometry , physics , mathematics , engineering
While long and very short alkyl chains in alkylammonium‐mica form a homogeneous mixture with remaining alkali ions on the mica surface, chains of medium length (≈C 12 ) prefer island structures (see picture showing the type of system found for various degrees of surface coverage and chain length). This observation is described in detail and a thermodynamic explanation is given.