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Electrospun supramolecular polymer fibres

Electrospun supramolecular polymer fibres
Electrospun supramolecular polymer fibres
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 electrospun 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 µm, rather than the sub-micron dimensions often produced in electrospinning 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 constant to the molecular weight required for fibre formation; significantly lower levels of association are required for higher molecular weight macromonomers compared to smaller molecular systems.
0014-3057
1249-1255
Hermida-Merino, D.
e5527590-99e8-470d-8978-0c3786d5e4b5
Belal, Mohammad
33550de9-0df1-4c90-bae6-3eb65c62778a
Greenland, B.W.
20a911f1-9b78-4b3f-8e6b-7f3aac792873
Woodward, P.
e8108b0e-011f-44f4-b4d8-e494c7d910ea
Slark, A.T.
a512b797-772a-43b1-a8c6-8584c7ded0af
Davis, F.J.
c2bf9a2f-7f24-4d84-8e5a-eca26833d6d4
Mitchell, G.R.
10233519-13b2-4f3f-ba9f-a47c0cfe68d6
Hamley, I.W.
aa1c38a0-dc90-4cc8-9a0a-b8e2186e0451
Hayes, W.
7fbfcc4f-750c-4edd-bd49-aa9317292e03
Hermida-Merino, D.
e5527590-99e8-470d-8978-0c3786d5e4b5
Belal, Mohammad
33550de9-0df1-4c90-bae6-3eb65c62778a
Greenland, B.W.
20a911f1-9b78-4b3f-8e6b-7f3aac792873
Woodward, P.
e8108b0e-011f-44f4-b4d8-e494c7d910ea
Slark, A.T.
a512b797-772a-43b1-a8c6-8584c7ded0af
Davis, F.J.
c2bf9a2f-7f24-4d84-8e5a-eca26833d6d4
Mitchell, G.R.
10233519-13b2-4f3f-ba9f-a47c0cfe68d6
Hamley, I.W.
aa1c38a0-dc90-4cc8-9a0a-b8e2186e0451
Hayes, W.
7fbfcc4f-750c-4edd-bd49-aa9317292e03

Hermida-Merino, D., Belal, Mohammad, Greenland, B.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), 1249-1255. (doi:10.1016/j.eurpolymj.2012.04.015).

Record type: Article

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 electrospun 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 µm, rather than the sub-micron dimensions often produced in electrospinning 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 constant to the molecular weight required for fibre formation; significantly lower levels of association are required for higher molecular weight macromonomers compared to smaller molecular systems.

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More information

Published date: 2012
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 356345
URI: http://eprints.soton.ac.uk/id/eprint/356345
ISSN: 0014-3057
PURE UUID: 26d120aa-be6d-4bed-8756-13431b42cd6e
ORCID for Mohammad Belal: ORCID iD orcid.org/0000-0001-5175-3158

Catalogue record

Date deposited: 16 Sep 2013 11:10
Last modified: 03 Dec 2019 01:43

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Contributors

Author: D. Hermida-Merino
Author: Mohammad Belal ORCID iD
Author: B.W. Greenland
Author: P. Woodward
Author: A.T. Slark
Author: F.J. Davis
Author: G.R. Mitchell
Author: I.W. Hamley
Author: W. Hayes

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