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Isothermal Titration Calorimetry: A Powerful Technique To Quantify Interactions in Polymer Hybrid Systems

Tipo de material: TextoTextoSeries ; Macromolecules, 42(19), p.7545-7552, 2009Trabajos contenidos:
  • Chiad, K
  • Stelzig, S.H
  • Gropeanu, R
  • Weil, T
  • Klapper, M
  • Mullen, K
Recursos en línea: Resumen: Isothermal titration calorimetry (ITC)was introduced as a highly sensitive tool to analyze interactions in polymer and material science by their thermodynamic patterns. The thermodynamic parameters ÄH, ÄS, ÄG, KB, and the stoichiometric ratio of the interactions in a complex organic-inorganic hybrid system were determined in a single experiment. In particular, the adsorption behavior of surface-active amphiphilic copolymers, bearing different types of anchor groups (nonionic, zwitterionic, and acidic), with SiO2 nanoparticles in a multicomponent solvent system was investigated. The knowledge of the thermodynamic parameters of the interaction provided, beside its strength, a detailed understanding of its mechanism. Particularly, for the production of the nanocomposites, this knowledge might lead to a more ational and optimized design of these materials.
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Isothermal titration calorimetry (ITC)was introduced as a highly sensitive tool to analyze interactions in polymer and material science by their thermodynamic patterns. The thermodynamic parameters ÄH, ÄS, ÄG, KB, and the stoichiometric ratio of the interactions in a complex organic-inorganic hybrid system were determined in a single experiment. In particular, the adsorption behavior of surface-active amphiphilic copolymers, bearing different types of anchor groups (nonionic, zwitterionic, and acidic), with SiO2 nanoparticles in a multicomponent solvent system was investigated. The knowledge of the thermodynamic parameters of the interaction provided, beside its strength, a detailed understanding of its mechanism. Particularly, for the production of the nanocomposites, this knowledge might lead to a more ational and optimized design of these materials.

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