Micellar properties of some zwitterionic surfactants

Herrmann, K. W.

doi:10.1016/0021-9797(66)90015-4

Cited by 98 publications

(37 citation statements)

References 13 publications

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“…Toxicity to hydra increased with the increase in lipophilic properties of these detergents and correlates well with the logarithmically decreasing CMC of sulphobetaines which accompanies increasing alkyl chain length (Herrmann, 1966). It is also in line with the lower surface tension values of sulphobetaines having higher alkyl radicals (Table 2).…”

Section: Effect Of ::Witterionics (Sulphobetaines)supporting

confidence: 67%

Biological effects of surfactants, III hydra as a highly sensitive assay animal

Bode

Ernst

Arditti

1978

Environmental Pollution (1970)

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Section: Effect Of ::Witterionics (Sulphobetaines)supporting

confidence: 67%

Biological effects of surfactants, III hydra as a highly sensitive assay animal

Bode

Ernst

Arditti

1978

Environmental Pollution (1970)

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“…This is not the case for the phosphonium group (XX, XXI), which in fact has been occasionally incorporated in zwitterionic surfactants which seem perfectly stable in aqueous media [79,82]. Yet, to our knowledge, phosphonium groups have not been employed for constructing zwitterionic polymers so far.…”

Section: Zwitterionic Moieties Realized In Polyzwitterions and Their mentioning

confidence: 96%

“…Thus, hydrophilicity (and also hygroscopy) of the anionic groups decreases in the order -COO 7,8,79]. Alkoxydicyanoethenolates (XII) are the most acidic and the least hydrophilic anionic groups, so that the derived polyzwitterions are typically not water soluble [66,69].…”

Section: Zwitterionic Moieties Realized In Polyzwitterions and Their mentioning

confidence: 99%

Structures and Synthesis of Zwitterionic Polymers

2014

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Abstract:The structures and synthesis of polyzwitterions ("polybetaines") are reviewed, emphasizing the literature of the past decade. Particular attention is given to the general challenges faced, and to successful strategies to obtain polymers with a true balance of permanent cationic and anionic groups, thus resulting in an overall zero charge. Also, the progress due to applying new methodologies from general polymer synthesis, such as controlled polymerization methods or the use of "click" chemical reactions is presented. Furthermore, the emerging topic of responsive ("smart") polyzwitterions is addressed. The considerations and critical discussions are illustrated by typical examples.

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“…Higher alkyl sulphobetaines at concentrations in the micellar range retarded growth (as reflected by optical densities). In this homologous series, the critical micelle concentration (CMC) decreases logarithmically with increasing alkyl chain length (Herrmann, 1966). Thus, the octyl and decyl sulphobetaines which had no observable effects on algal growth were not micellar, even at the highest concentration (2 ·O mM).…”

Section: Discussionmentioning

confidence: 92%