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In the present paper, a reliable and rugged thermogravimetry–gas chromatography–mass spectrometry (TGA–GC–MS) method was developed to determine the composition of ultrathin films consisting of binary blends of functional polystyrene (PS) and polymethylmethacrylate (PMMA) grafted to a silicon wafer. A general methodology will be given to address the composition determination problem for binary or even multicomponent polymer brush systems using the PS/PMMA-based samples as a paradigmatic example. In this respect, several distinct tailor-made materials were developed to ensure reliable calibration and validation stages. The analytical method was tested on unknown samples to follow the composition evolution in PS/PMMA brushes during the grafting reaction. A preferential grafting of the PMMA was revealed in full agreement with its preferential interaction with the SiO2 polar surface …
Springer Berlin Heidelberg
Publication date: 
1 May 2016

Diego Antonioli, Katia Sparnacci, Michele Laus, Federico Ferrarese Lupi, Tommaso Jacopo Giammaria, Gabriele Seguini, Monica Ceresoli, Michele Perego, Valentina Gianotti

Biblio References: 
Volume: 408 Issue: 12 Pages: 3155-3163
Analytical and bioanalytical chemistry