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A. Wach, P. Natkański, M. Drozdek, B. Dudek, P. Kuśtrowski

Functionalization of mesoporous SBA-15 silica by grafting
of polyvinylamine on epoxy-modified surface (in English)

Polimery 2017, No 7-8, 516


DOI: dx.doi.org/10.14314/polimery.2017.516

Summary

Mesoporous SBA-15 silica was modified by grafting of 3-glycidoxypropyltrimethoxysilane (GPTMS). An influence of GPTMS/SBA-15 mass ratio used during this pre-functionalization step on the real amount of epoxy-silane grafted on the SBA-15 surface was studied by thermogravimetry and elemental analysis. The pre-functionalized SBA-15 was subsequently used to attach polyvinylamine (PVAm) chains by the opening of oxirane rings and the formation of bonds with NH2 groups from PVAm. The yield of this process was determined. Furthermore, SEM (scanning electron microscopy), DRIFT (diffuse reflectance infrared Fourier transform spectroscopy) and XPS (X-ray photoelectron spectroscopy) as well as zeta potential measurements were applied to observe the changes in the chemical composition of SBA-15 surface and morphology of the synthesized materials. Various types of organic functionalities present on the modified SBA-15 were identified and analyzed quantitatively.
Keywords: mesoporous silica, organic-inorganic hybrid materials, polymer grafting, polyvinylamine
e-mail: piotr.kustrowski@uj.edu.pl
A. Wach, P. Natkański, M. Drozdek, B. Dudek, P. Kuśtrowski (1.03 MB)
Functionalization of mesoporous SBA-15 silica by grafting of polyvinylamine on epoxy-modified surface (in English)