Articles liés à Stress ? structure correlations in grafted polymer...

Stress ? structure correlations in grafted polymer films: Phase transitions in constrained polymer films and why they are different from "normal" films and bulk - Couverture souple

Lenz, Sebastian

 
9783838115894: Stress ? structure correlations in grafted polymer films: Phase transitions in constrained polymer films and why they are different from "normal" films and bulk
Couverture souple
ISBN 10 : 3838115899 ISBN 13 : 9783838115894
Editeur : Suedwestdeutscher Verlag fuer Hochschulschriften, 2010

Synopsis

This work presents experimental results on grafted polymer films. The aim was to understand transition processes in grafted polymer films regarding their structure and chain mechanics. For such purpose structural attributes of grafted polymer films were related to mechanical attributes. First the fundamental background, which is needed to analyze and understand experimental data, is pictured. This includes also new approaches for scattering data analysis. Experimental studies were focused on two different kinds of polymer film systems were investigated. Endgrafted poly-mehtyl-methacrylate (PMMA) brush films were investigated regarding their collapse - swelling transition on the solvent quality. It was observed that attractive interactions in the brush decreased for theta solvent conditions. For grafted to polystyrene (PS)/poly-vinyl-methyl-ether (PVME) blend films was concluded that the grafted polymer chains need an adequate degree of entropical freedom to undergo phase separations. Mechanical surface stress experiments made the understanding of the observed phase separation mechanisms possible.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

This work presents experimental results on grafted polymer films. The aim was to understand transition processes in grafted polymer films regarding their structure and chain mechanics. For such purpose structural attributes of grafted polymer films were related to mechanical attributes. First the fundamental background, which is needed to analyze and understand experimental data, is pictured. This includes also new approaches for scattering data analysis. Experimental studies were focused on two different kinds of polymer film systems were investigated. Endgrafted poly-mehtyl-methacrylate (PMMA) brush films were investigated regarding their collapse - swelling transition on the solvent quality. It was observed that attractive interactions in the brush decreased for theta solvent conditions. For grafted to polystyrene (PS)/poly-vinyl-methyl-ether (PVME) blend films was concluded that the grafted polymer chains need an adequate degree of entropical freedom to undergo phase separations. Mechanical surface stress experiments made the understanding of the observed phase separation mechanisms possible.

Biographie de l'auteur

2001 - 2006 student of chemistry (diploma) at the University of Regensburg, Germany. 2006 Diploma thesis at the University of Florence, Italy. 2006 - 2009 Ph.D. student at the Max Planck Institute for Polymer Research, Mainz, Germany.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
Suedwestdeutscher Verlag fuer Hochschulschriften
Date d'édition
2010
Langue
anglais
ISBN 10 
3838115899
ISBN 13 
9783838115894
Reliure
Broché
Nombre de pages
168
Coordonnées du fabricant
non disponible
Personne responsable
non disponible