Controlled thiol-ene polymer microsphere production using a low-frequency acoustic excitation coaxial flow method

Controlled thiol-ene polymer microsphere production using a low-frequency acoustic excitation coaxial flow method

A novel technique for the production of thiol-ene microspheres using acoustic resonance and coaxial flow is reported. The method utilizes low-frequency acoustically driven mechanical perturbations to disrupt the flow of a thiol-ene liquid jet, resulting in small thiol-ene droplets that are photochem...

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Bibliographic Details
Published in:Polymer (Guilford) Vol. 94; pp. 8 - 13
Main Authors: Windham, Amber D., Lowe, Patrick M., Conley, Keith W., Netchaev, Anton D., Buchanan, Randy K., Buchanan, J. Paige
Format: Journal Article
Language:English
Published: Elsevier Ltd 28-06-2016
Subjects:
Acoustic disturbance
Acoustic resonance
Coaxial flow
Droplets
Liquids
Microspheres
Monomers
Thiol-ene
Tuning
Viscosity
Acoustic disturbance
Microspheres
Thiol-ene
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Summary:A novel technique for the production of thiol-ene microspheres using acoustic resonance and coaxial flow is reported. The method utilizes low-frequency acoustically driven mechanical perturbations to disrupt the flow of a thiol-ene liquid jet, resulting in small thiol-ene droplets that are photochemically polymerized to yield thiol-ene microspheres. Tuning of the frequency, amplitude, and monomer solution viscosity are critical parameters impacting the diameter of the microspheres produced. Characterization by optical microscopy, scanning electron microscopy, and dynamic light scattering reveal microspheres of diameters <10 μm, with narrow particle distributions. [Display omitted] •Developed a low-ʋ, acoustic-excitation, coaxial-flow method to produce microspheres.•Produced microspheres from two polyfunctional thiol-ene monomer compositions.•Identified critical variables needed to produce spheres of narrow size distribution.•As a general platform, ready adaptation to other UV-cure compositions is expected.
Bibliography:ObjectType-Article-1
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content type line 23
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2016.03.086