Interaction of premicellar states of a PEO-PPO-PEO triblock copolymer with partially hydrophobic substances: NMR study

Result code in IS VaVaI

RIV/61389013:_____/12:00376309 - isvavai.cz

Result on the web

http://dx.doi.org/10.1021/jp3003323

DOI - Digital Object Identifier

10.1021/jp3003323

Result language

angličtina

Original language name

Interaction of premicellar states of a PEO-PPO-PEO triblock copolymer with partially hydrophobic substances: NMR study

Original language description

According to 1H and 13C NMR spectra, relaxations, and PFG NMR self-diffusion measurements, partially hydrophobic additives methyl?ethyl ketone (MEK), methyl-isopropyl ketone (MIPK), and methyl-t-butyl ketone (MTBK) facilitate the conformation change andsubsequent self-association of the copolymer Pluronic L64. The correlation time (4?9 ms) and activation energy (43?52 kJ/mol) of transition between its conformation states decrease with the increasing hydrophobicity and bulkiness of the additive. The temperature of the first PPO self-association decreases in the same order (by 4 K for MTBK).

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

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)
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

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

Name of the periodical

Journal of Physical Chemistry B

ISSN

1520-6106

e-ISSN

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Volume of the periodical

116

Issue of the periodical within the volume

14

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

4386-4393

UT code for WoS article

000302591500033

EID of the result in the Scopus database

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