Enthalpy of micellisation of a diblock copoly(oxyethylene/oxypropylene) by isothermal titration calorimetry. Comparison with the van't Hoff value

Pablo Taboada; Victor Mosquera; David Attwood; Zhuo Yang; Colin Booth

doi:10.1039/b303108j

Enthalpy of micellisation of a diblock copoly(oxyethylene/oxypropylene) by isothermal titration calorimetry. Comparison with the van't Hoff value

Pablo Taboada, Victor Mosquera, David Attwood, Zhuo Yang, Colin Booth

Research output: Contribution to journal › Article › peer-review

Abstract

Block copolymer P94E316 (P = oxypropylene, E = oxyethylene, and the subscripts denote number-average block lengths) has been studied by isothermal titration calorimetry to determine critical micelle concentrations (c.m.c.) and enthalpies of micellisation at temperatures in the range 20-35°C. Comparison with values of the c.m.c. determined previously by other methods shows good agreement. Comparison of the enthalpies of micellisation with standard values determined using the van't Hoff equation indicates a marked difference in values derived from the two methods. We speculate that the effect is caused by the P-block-length distribution in the copolymer.

Original language	English
Pages (from-to)	2625-2627
Number of pages	2
Journal	Physical Chemistry Chemical Physics
Volume	5
Issue number	12
DOIs	https://doi.org/10.1039/b303108j
Publication status	Published - 15 Jun 2003

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title = "Enthalpy of micellisation of a diblock copoly(oxyethylene/oxypropylene) by isothermal titration calorimetry. Comparison with the van't Hoff value",

abstract = "Block copolymer P94E316 (P = oxypropylene, E = oxyethylene, and the subscripts denote number-average block lengths) has been studied by isothermal titration calorimetry to determine critical micelle concentrations (c.m.c.) and enthalpies of micellisation at temperatures in the range 20-35°C. Comparison with values of the c.m.c. determined previously by other methods shows good agreement. Comparison of the enthalpies of micellisation with standard values determined using the van't Hoff equation indicates a marked difference in values derived from the two methods. We speculate that the effect is caused by the P-block-length distribution in the copolymer.",

author = "Pablo Taboada and Victor Mosquera and David Attwood and Zhuo Yang and Colin Booth",

year = "2003",

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doi = "10.1039/b303108j",

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journal = "Physical Chemistry Chemical Physics",

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T1 - Enthalpy of micellisation of a diblock copoly(oxyethylene/oxypropylene) by isothermal titration calorimetry. Comparison with the van't Hoff value

AU - Taboada, Pablo

AU - Mosquera, Victor

AU - Attwood, David

AU - Yang, Zhuo

AU - Booth, Colin

PY - 2003/6/15

Y1 - 2003/6/15

N2 - Block copolymer P94E316 (P = oxypropylene, E = oxyethylene, and the subscripts denote number-average block lengths) has been studied by isothermal titration calorimetry to determine critical micelle concentrations (c.m.c.) and enthalpies of micellisation at temperatures in the range 20-35°C. Comparison with values of the c.m.c. determined previously by other methods shows good agreement. Comparison of the enthalpies of micellisation with standard values determined using the van't Hoff equation indicates a marked difference in values derived from the two methods. We speculate that the effect is caused by the P-block-length distribution in the copolymer.

AB - Block copolymer P94E316 (P = oxypropylene, E = oxyethylene, and the subscripts denote number-average block lengths) has been studied by isothermal titration calorimetry to determine critical micelle concentrations (c.m.c.) and enthalpies of micellisation at temperatures in the range 20-35°C. Comparison with values of the c.m.c. determined previously by other methods shows good agreement. Comparison of the enthalpies of micellisation with standard values determined using the van't Hoff equation indicates a marked difference in values derived from the two methods. We speculate that the effect is caused by the P-block-length distribution in the copolymer.

U2 - 10.1039/b303108j

DO - 10.1039/b303108j

M3 - Article

SN - 1463-9076

VL - 5

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JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 12

ER -

Enthalpy of micellisation of a diblock copoly(oxyethylene/oxypropylene) by isothermal titration calorimetry. Comparison with the van't Hoff value

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