Claudiu Melian
RWTH Aachen University
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Publication
Featured researches published by Claudiu Melian.
Journal of Physical Chemistry B | 2009
Maria Baias; Dan E. Demco; C. Popescu; Radu Fechete; Claudiu Melian; Bernhard Blümich; Martin Möller
Thermal denaturation of hydrated keratin in wool was investigated by NMR using 1H wide-line spectra to obtain the phase composition and 1H spin-diffusion experiments using a double-quantum filter to obtain the domain sizes for the wool fibers. The denaturation process detected by DSC takes place for wool fibers in deuterated water in the temperature range 140-144 degreeC. The phase composition measured by 1H wide line NMR spectra reveals a rigid, semirigid and an amorphous phase for temperatures in the range 25-160 degreeC. A dramatic change in the phase composition was detected around 142 degreeC, corresponding to the denaturation temperature. The morphological domain sizes measured by 1H spin-diffusion NMR experiments were obtain from the solutions of the spin-diffusion equations for two-dimensional rectangular and cylindrical morphologies. The keratin mobility gradient in the interfacial region at different denaturation temperatures was measured from the 1H spin-diffusion data. A qualitative model describing the denaturation process of hydrated keratin protein was developed that explains the changes in domain thickness, spin diffusivities, phase composition, and thermodynamic parameters.
Macromolecules | 2010
Susann Schachschal; Andreea Balaceanu; Claudiu Melian; Dan E. Demco; Thomas Eckert; Walter Richtering; Andrij Pich
Macromolecules | 2006
Xiaomin Zhu; Manfred Jaumann; and Karin Peter; Martin Möller; Claudiu Melian; Alina Adams-Buda; and Dan E. Demco; Bernhard Blümich
Macromolecules | 2011
Victor M. Litvinov; Jianjun Xu; Claudiu Melian; Dan E. Demco; Martin Möller; J. Simmelink
Journal of Sol-Gel Science and Technology | 2008
Qizheng Dou; Xiaomin Zhu; Karin Peter; Dan E. Demco; Martin Möller; Claudiu Melian
Macromolecules | 2010
Xiaomin Zhu; Claudiu Melian; Qizheng Dou; Karin Peter; Dan E. Demco; Martin Möller; Denis V. Anokhin; Jean-Marc Le Meins; Dimitri A. Ivanov
Chemical Physics Letters | 2008
Maayan Gal; Claudiu Melian; Dan E. Demco; Bernhard Blümich; Lucio Frydman
Macromolecular Chemistry and Physics | 2010
Dan E. Demco; Claudiu Melian; Jeff Simmelink; Victor M. Litvinov; Martin Möller
Chemical Physics Letters | 2009
Claudiu Melian; Dan E. Demco; Monica Istrate; Andreea Balaceanu; Dumitrita Moldovan; Radu Fechete; C. Popescu; Martin Möller
Macromolecular Chemistry and Physics | 2008
Sonia Gandhi; Claudiu Melian; Dan E. Demco; Bernhard Blümich