Structuration and glass transition temperature of the adsorbed polymer layer : some insights in the property deviations of the ultra-thin polymer film

Abstract : Size reduction is one of the very important factors considered during the device fabrication. Polymer thin films, which is a crucial component of many devices, shows numerous anomalous behaviors when they are confined by their thickness. This work is dedicated to understand the confinement effects and properties of ultrathin polymer films. At the very outset we observed the density evolution of polymer films with the film thickness by means of adsorbing ceria nanoparticles onto the polymer surfaces. The second study threw light on the stability/instability domains of such films, which led to a method for fabricating stable films which are less than 7nm, by means of rinsing with a good solvent. In the following study, it was found that there is a significant influence of solvent used rinsing on the characteristics of the polymer residual layer. Finally the glass transition behavior of the polymer residual layer was analyzed, which showed multiple glass transition temperatures, that points to the existence of two physical states in the polymer residual layer. Altogether, this work contributes towards a better understanding of the density, stability and glass transition properties of polymer films confined by their thickness.
Document type :
Theses
Complete list of metadatas

Cited literature [284 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-01439328
Contributor : Abes Star <>
Submitted on : Wednesday, January 18, 2017 - 3:17:06 PM
Last modification on : Thursday, January 11, 2018 - 6:28:06 AM
Long-term archiving on : Wednesday, April 19, 2017 - 2:41:40 PM

File

2016theseBenna_UnniA.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01439328, version 1

Collections

Citation

Aparna Beena Unni. Structuration and glass transition temperature of the adsorbed polymer layer : some insights in the property deviations of the ultra-thin polymer film. Material chemistry. Université de Bretagne Sud, 2016. English. ⟨NNT : 2016LORIS416⟩. ⟨tel-01439328⟩

Share

Metrics

Record views

1107

Files downloads

1091