Synthesis and Solid-State NMR Investigations of Radiation-Immobilized Polysiloxanes on Bare, Titanium-Grafted, and Zirconium-Grafted Silicas

Three different reversed-phase materials for high-performance liquid chromatography, obtained by sorption of poly(methyloctylsiloxane) (PMOS) onto bare silica, titanized silica, and zirconized silica pores, followed by immobilization with γ-radiation, were characterized by means of solid-state NMR s...

Full description

Saved in:
Bibliographic Details
Published in:Chemistry of materials 2001-05, Vol.13 (5), p.1874-1879
Main Authors: Bachmann, Stefan, Melo, Lúcio F. C, Silva, Rosely B, Anazawa, Tania A, Jardim, Isabel C. S. F, Collins, Kenneth E, Collins, Carol H, Albert, Klaus
Format: Article
Language:English
Subjects:
Analytical chemistry
Applied sciences
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Grafting and modifications
Other chromatographic methods
Physicochemistry of polymers
Polymers and radiations
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Three different reversed-phase materials for high-performance liquid chromatography, obtained by sorption of poly(methyloctylsiloxane) (PMOS) onto bare silica, titanized silica, and zirconized silica pores, followed by immobilization with γ-radiation, were characterized by means of solid-state NMR spectroscopy. The surface properties of these stationary phases were investigated by 29Si CP/MAS and 13C CP/MAS NMR spectroscopy. γ-Radiation causes the formation of new bonds, either between PMOS and the different supports or between different siloxane chains, which leads, in either case, to a higher amount of polysiloxane immobilized onto the silica support material.
ISSN:0897-4756
1520-5002
DOI:10.1021/cm001179f