Electrospraying : an in-situ polymerisation route for fabricating high macroporous scaffolds

This paper reports a direct jet-based polymerisation by polycondensation approach to forming a self-supporting scaffold structure. The processing technique is electrospraying, which is also known as electrohydrodynamic atomization. A specially formulated ethanolic siloxane sol derived from alkoxysil...

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Bibliographic Details
Published in:Journal of sol-gel science and technology 2006-06, Vol.38 (3), p.293-302
Main Authors: JAYASINGHE, S. N, SULLIVAN, A. C
Format: Article
Language:English
Subjects:
Alkoxysilanes
Atomizing
Chemistry
Colloidal gels. Colloidal sols
Colloidal state and disperse state
Condensation polymerization
Electrohydrodynamics
Electrospraying
Exact sciences and technology
General and physical chemistry
NMR
Nuclear magnetic resonance
Polymerization
Porous materials
Scaffolds
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Summary:This paper reports a direct jet-based polymerisation by polycondensation approach to forming a self-supporting scaffold structure. The processing technique is electrospraying, which is also known as electrohydrodynamic atomization. A specially formulated ethanolic siloxane sol derived from alkoxysilanes was synthesised and electrosprayed using a ring-shaped ground electrode configuration. The medium was seen to electrospray in the stable cone-jet mode, which later gave rise to the growing or forming of “fir-tree” like structures. The materials were characterised using microscopy, solid state NMR, FTIR, XRD and DSC. Hence this paper explains the direct controlled polycondensation from the siloxane sol and further presents the basis by which these scaffolds take shape.
ISSN:0928-0707
1573-4846
DOI:10.1007/s10971-006-6727-1