The structure investigations of polysaccharide—polyimine encapsuled siliceous materials

The structure investigations of polysaccharide—polyimine encapsuled siliceous materials

Forming a polymer layer on the surface of siliceous supports for chromatography is one of the methods for protecting the silica skeleton from dissolution in alkaline mobile phases as well as eliminating the negative influence of silanol groups on separated molecules. Polysaccharide—polyimine copolym...

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Bibliographic Details
Published in:Materials chemistry and physics Vol. 49; no. 3; pp. 243 - 251
Main Authors: Dawidowicz, Andrzej L., Wasilewska, Dorota, Pikus, Stanisłlaw
Format: Journal Article
Language:English
Published: Lausanne Elsevier B.V 01-07-1997
Elsevier
Subjects:
Cross-disciplinary physics: materials science; rheology
Dextran— polyimine layer
Exact sciences and technology
Materials science
Materials synthesis; materials processing
Materials with polymer layer
Physics
Porous materials; granular materials
Structure of porous materials
Dextran— polyimine layer
Structure of porous materials
Materials with polymer layer
Encapsulation
Porosimetry
Porous materials
XRD
Small angle X ray scattering
Experimental study
Chromatography
TGA
Mercury porosimetry
Polysaccharides
Imine polymer
Porosity
Structure
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Summary:Forming a polymer layer on the surface of siliceous supports for chromatography is one of the methods for protecting the silica skeleton from dissolution in alkaline mobile phases as well as eliminating the negative influence of silanol groups on separated molecules. Polysaccharide—polyimine copolymers can play the role of the surface layer, especially in siliceous materials for high performance affinity chromatography. The porous structure of materials with surface polymer layer is different from that for initial material which supports the layer. The paper deals with the applicability of: mercury porosimetry, size exclusion chromatography (SEC), thermogravimetry (TG), small angle X-ray scattering (SAXS), for the structure characterization of the system consisting of siliceous support with dextran—polyimine layer. The results obtained show that despite of the presence of a rigid siliceous core supporting the polymer layer, the structure of such sorbents should be examined by the methods preferred for the investigation of soft polymers, e.g. SEC, TG, SAXS.
ISSN:0254-0584
1879-3312
DOI:10.1016/S0254-0584(97)80171-X