By D. Rubingh
Targeting the answer actual chemistry and floor homes of cationic surfactants, 3 significant sections research the homes of cationic surfactants themselves either in answer and at interfaces, the interactions of cationic surfactants with different fabrics, and purposes of cationic s
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Additional resources for Cationic Surfactants (Surfactant Science)
As a result, it is generally true for cationic surfactant salts that: 1. Liquid crystal phases are highly stable thermally. 2. The upper limit of the Krafft boundary (Tu) lies far below the melting pont of the dry crystalline surfactant salt, and 3. The liquid-liquid miscibility gap does not ordinarily exist. It is to be recognized that all these phase parameters are significantly influenced by the anionic partner of the cationic surfactant salt (the counterion) and by lipophilic group and proximate substituent group  structure, as well as by the hydrophilic group.
Copyright © 1991 by MARCEL DEKKER, INC. All Rights Reserved Neither this book nor any part may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, microfilming, and recording, or by any information storage and retrieval system, without permission in writing from the publisher. MARCEL DEKKER, INC. 270 Madison Avenue, New York, New York 10016 Current printing (last digit): 0 9 8 7 6 5 4 3 2 1 PRINTED IN THE UNITED STATES OF AMERICA Page iii Preface Interest in the properties and uses of cationic surfactants has continued to grow since the publication of Cationic Surfactants in the Surfactant Science Series in 1970.
In the case of insoluble surfactants, both the crystal and liquid crystal solubility boundaries are pushed against the water border and the plateau region of the Krafft boundary disappears. The upper temperature limit of crystal solubility Tu is nonetheless still recognizable, as the same three-phase eutectoid discontinuity (liquid-liquid crystal-crystal) exists. The temperature difference between the melting point of the dry crystal and Tu has been recognized as a phase parameter whose magnitude reflects the intrinsic hydrophilicity of the hydrophilic group.