The effect of micellization-induced deprotonation on the associative behavior of a carboxyl modified Pluronic P85

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F14%3A00432036" target="_blank" >RIV/61389013:_____/14:00432036 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1039/C4SM01337A" target="_blank" >http://dx.doi.org/10.1039/C4SM01337A</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/C4SM01337A" target="_blank" >10.1039/C4SM01337A</a>

Result language

angličtina

Original language name

The effect of micellization-induced deprotonation on the associative behavior of a carboxyl modified Pluronic P85

Original language description

Thermoresponsive polymeric surfactant CAE85 is a telechelic carboxyl group derivative of Pluronic P85 and its carboxyl end-groups undergo deprotonation into carboxylate groups upon micellization. Micelle formation and disintegration were studied here bymeans of small angle X-ray scattering, FTIR and Raman spectroscopy, quantum mechanical calculations and dynamical mechanical analysis. The deprotonation was observed in aqueous solutions of CAE85 for concentrations from 5 wt% to 30 wt% at temperatures above the corresponding critical micellization temperature (CMT). The most likely cause is a difference between the proton dissociation constant of the micelle (pKm) and the proton dissociation constant of the unimers in solution (pKa); our observations indicate that pKm < pKa. For concentrations up to 15 wt%, the presence of carboxylate groups in CAE85 lowered the CMT in comparison with P85. In addition, the behavior of CAE85 was generally not thermo-reversible and reproducible upon cooli

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CD - Macromolecular chemistry

OECD FORD branch

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Project

<a href="/en/project/GAP108%2F12%2F0703" target="_blank" >GAP108/12/0703: Cellulose-based biodegradable nanocomposite materials prepared in ionic liquids</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Soft Matter

ISSN

1744-683X

e-ISSN

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Volume of the periodical

10

Issue of the periodical within the volume

40

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

8011-8022

UT code for WoS article

000344998600013

EID of the result in the Scopus database

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