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Deeper Insight into Structures of Modified AEROSIL Particles Synthesized via Conventional Heating and Microwave Heating
Author(s) -
Nothdurft Lars,
Glück Tobias,
Dempwolf Wibke,
SchmidtNaake Gudrun
Publication year - 2008
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200700297
Subject(s) - materials science , fumed silica , adsorption , microwave , fraction (chemistry) , microwave heating , chemical engineering , extraction (chemistry) , silicon dioxide , nanoparticle , mass fraction , shell (structure) , silicon , organic chemistry , composite material , nanotechnology , chemistry , optoelectronics , physics , quantum mechanics , engineering
The contribution deals with the comparison of microwave heating and conventional oil bath heating. Silicon dioxide nanoparticles were grafted with MPTMS under acid conditions. Those particles contain a polysiloxane shell with physically adsorbed and chemically bound fractions which can be separated by Soxhlet extraction. The resulting fractions were analyzed with TGA and MALDI‐TOF MS; one to determine the amount of physically adsorbed and chemically bound fractions and the other to get deeper insight into the polysiloxane structures. Furthermore, it was our aim to clarify which fraction can be visualized using MALDI‐TOF MS. Our results show that the ratio of chemically bound MPTMS is higher when using microwave heating, but the same structures in the physically adsorbed fraction were built in both cases.