Salt-specific effects observed in calorimetric studies of alkali and tetraalkylammonium salt solutions of poly(thiophen-3-ylacetic acid)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10293220" target="_blank" >RIV/00216208:11310/15:10293220 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1039/c4cp04710a" target="_blank" >http://dx.doi.org/10.1039/c4cp04710a</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c4cp04710a" target="_blank" >10.1039/c4cp04710a</a>

Result language
angličtina
Original language name
Salt-specific effects observed in calorimetric studies of alkali and tetraalkylammonium salt solutions of poly(thiophen-3-ylacetic acid)
Original language description
The enthalpies of dilution DHdil of aqueous solutions of a conjugated polyelectrolyte, poly(thiophen-3-ylacetic acid), neutralized by lithium, sodium, cesium, tetramethyl-, tetraethyl-, tetrapropyl-, and tetrabutylammonium hydroxides, were determined inthe concentration range from c(p) = 2 x 10(-3) to 1 x 10(-1) monomol dm(-3) and for T = 278.15, 298.15, and 318.15 K. At low concentrations the dilution of the alkali PTAA salts yields an endothermic effect, which is in part a consequence of the hydrolysis. An exception is PTALi at 278.15 K, where Delta H-dil < 0. In the case of tetraalkylammonium salts the enthalpies of dilution increase in the order TBA < TPA < TEA < TMA. Only the TBA salt of PTAA yields an exothermic effect upon dilution in the wholetemperature range. In the second part of the study we measured the enthalpies of mixing, Delta H-mix, of various salts of poly(thiophen-3-ylacetic acid) with LiCl, NaCl, KCl, and CsCl solutions in water. When lithium salt of PTAA is mixe
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Project
<a href="/en/project/GAP108%2F12%2F1143" target="_blank" >GAP108/12/1143: Polyelectrolytic conjugated dynamers: preparation, constitutional dynamics and functional properties of new materials</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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