Electrospun supramolecular polymer fibres

Hermida-Merino, D, Belal, M, Greenland, Barnaby W, Woodward, P, Slark, A T, Davis, F J, Mitchell, G R, Hamley, I W and Hayes, W (2012) Electrospun supramolecular polymer fibres. European Polymer Journal, 48 (7). pp. 1249-1255. ISSN 0014-3057

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Abstract

The electrospinning of urethane based low molecular weight polymers differing only in the nature of the hydrogen bonding end-groups has been investigated. For the end-groups with the lowest binding constants at maximum solubility only droplets, are produced at the electrode; in contrast, increasing the binding constant of the end-group results in electro- spun fibres being produced. The properties of the fibres produced are subject to changes in solvent, concentration and temperature. Typical diameters for these fibres were found to be some 10 s of lm, rather than the sub-micron dimensions often produced in electrospin- ning systems. Such diameters are related to the high initial concentrations required; this also may influence the rate of solvent removal and preferential surface solidification which feature in these examples. A simple theoretical model is used to relate the association con- stant to the molecular weight required for fibre formation; significantly lower levels of association are required for higher molecular weight macromonomers compared to smal- ler molecular systems.

Item Type: Article
Schools and Departments: School of Life Sciences > Chemistry
Subjects: Q Science > QD Chemistry
Depositing User: Barnaby Greenland
Date Deposited: 12 Apr 2018 14:13
Last Modified: 12 Apr 2018 14:13
URI: http://sro.sussex.ac.uk/id/eprint/75052

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