Premium
Large‐Scale, Low‐Cost Fabrication of Janus‐Type Emulsifiers by Selective Decoration of Natural Kaolinite Platelets
Author(s) -
Hirsemann Dunja,
Shylesh Sankaranarayanapillai,
De Souza Roger A.,
DiarBakerly Bashar,
Biersack Bernhard,
Mueller David N.,
Martin Manfred,
Schobert Rainer,
Breu Josef
Publication year - 2012
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.201106710
Subject(s) - kaolinite , janus , fabrication , covalent bond , materials science , chemical engineering , nanotechnology , janus particles , chemistry , organic chemistry , metallurgy , engineering , medicine , alternative medicine , pathology
Kaolinite platelets have inherent Janus character owing to a polar crystal structure. This character is, however, ineffective without selective modification of the two hydrophilic external basal surfaces. Amplification of the difference in the chemical nature of the surfaces is achieved by cation exchange on one side and by covalent grafting on the other. After adjustment of the surface tension, kaolinite is an effective emulsifier.