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Identifier |
uch.physics.phd//1997petekidis |
Title |
Δυναμική και διαμόρφωση δύσκαμπτων πολυμερών σε ισότροπα διαλύματα |
Alternative Title |
Dynamics and conformation of Hairy-Rod Polymers in Isotropic Solutions |
Author
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Πετεκίδης, Γεώργιος Σ
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Thesis advisor
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Αναστασιάδης, Σ.
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Abstract |
In this work we study: a)The conformation,b)the agregation, c)the dynamic behavior of Stiff Hairy -rod polymers in isotopic solutions and d)the molecular orientation i n thin films.The basic experimental techniques are based on light sca ttering: 1)Photon- Correlation Spectroscopy (b and c) 2)Fabry-Perot In terferometry (a) and Raman Spectroscopy (d). In the conformation stu dy we calculate,with a new analysis of depolarized scattering,the pe rsistence length.The aggregation study investigates the association and phase separation of solutions of Hairy-rods.The dynamic study in vestigates the concentration and orientation fluctuations of dilute to highly concentrated isotropic solutions.The concentration dependence of the cooperative and self diffusion as well as the rotational dif fusion coefficients are discussed in terms of relative theoretical p redictions.The cooperative diffusion exhibits a behavior intermediate between rodlike and flexible predictions.Novel characteristic,which can not be explained by current theories are revealed by the study of orientation fluctuations.They are related to local orientation corre lations in the concentrated regime
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Language |
English |
Issue date |
1997-12-22 |
Collection
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School/Department--School of Sciences and Engineering--Department of Physics--Doctoral theses
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Type of Work--Doctoral theses
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Views |
539 |