Micellization-induced deprotonation of thermoresponsive surfactant CAE-85 ? the telechelic carboxylic group derivative of Pluronic P85
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F11%3A00365712" target="_blank" >RIV/61389013:_____/11:00365712 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.vibspec.2011.09.001" target="_blank" >http://dx.doi.org/10.1016/j.vibspec.2011.09.001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.vibspec.2011.09.001" target="_blank" >10.1016/j.vibspec.2011.09.001</a>
Alternative languages
Result language
angličtina
Original language name
Micellization-induced deprotonation of thermoresponsive surfactant CAE-85 ? the telechelic carboxylic group derivative of Pluronic P85
Original language description
Temperature-induced micellization of CAE-85, a carboxylic acid end-standing derivative of a copolymer Pluronic P85, was studied by attenuated total reflectance Fourier-transform infrared spectroscopy and density functional theory model calculations. In polymer micelles, carboxyl end groups dissociated in a two stage process. The first stage of deprotonation appeared with the onset of micellization ? in agreement with predictions of existing models and theories for ionization processes in micellar corona. In micelles well above the critical micellization temperature, the degree of CAE-85 deprotonation increased to values significantly higher compared to unimer solution. Such deprotonation correlates well with formation of hydrogen bonded carboxyl end groups due to high density of chains in the corona of developing micelles. Thus, the proton dissociation constant, pKm, specific to the micellar form exists and is different from the proton dissociation constant of solution of unimers, pKa.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Vibrational Spectroscopy
ISSN
0924-2031
e-ISSN
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Volume of the periodical
57
Issue of the periodical within the volume
2
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
6
Pages from-to
300-305
UT code for WoS article
000296940700019
EID of the result in the Scopus database
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