TY - JOUR
T1 - Composition of ultrathin binary polymer brushes by thermogravimetry-gas chromatography-mass spectrometry
AU - Antonioli, Diego
AU - Sparnacci, Katia
AU - Laus, Michele
AU - Ferrarese Lupi, Federico
AU - Giammaria, Tommaso Jacopo
AU - Seguini, Gabriele
AU - Ceresoli, Monica
AU - Perego, Michele
AU - Gianotti, Valentina
N1 - Publisher Copyright:
© 2016 Springer-Verlag Berlin Heidelberg.
PY - 2016/5/1
Y1 - 2016/5/1
N2 - 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.
AB - 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.
KW - Composition determination
KW - Method validation
KW - Polymer brushes
KW - Thermogravimetry-gas chromatography-mass spectrometry
KW - Ultrathin film analysis
UR - http://www.scopus.com/inward/record.url?scp=84957942204&partnerID=8YFLogxK
U2 - 10.1007/s00216-016-9380-8
DO - 10.1007/s00216-016-9380-8
M3 - Article
SN - 1618-2642
VL - 408
SP - 3155
EP - 3163
JO - Analytical and Bioanalytical Chemistry
JF - Analytical and Bioanalytical Chemistry
IS - 12
ER -