Quantifying hydrogel response using laser light scattering

Joshua M.G. Swann, Wim Bras, Jonathan R. Howse, Paul Topham, Anthony J. Ryan

Research output: Contribution to journalArticle

Abstract

The pH and counter-ion response of a microphase separated poly(methyl methacrylate)-block-poly(2-(diethylamino)ethyl methacrylate)-block-poly(methyl methacrylate) hydrogel has been investigated using laser light scattering on an imprinted micron scale topography. A quartz diffraction grating was used to create a micron-sized periodic structure on the surface of a thin film of the polymer and the resulting diffraction pattern used to calculate the swelling ratio of the polymer film in situ. A potentiometric titration and a sequence of counter ion species, taken from the Hofmeister series, have been used to compare the results obtained using this novel technique against small angle X-ray scattering (nanoscopic) and gravimetric studies of bulk gel pieces (macroscopic). For the first time, the technique has been proven to be an inexpensive and effective analytical tool for measuring hydrogel response on the microscopic scale.
LanguageEnglish
Pages743-749
Number of pages7
JournalSoft matter
Volume6
Issue number4
DOIs
Publication statusPublished - 2010

Fingerprint

Radiation counters
Hydrogel
Polymethyl Methacrylate
polymethyl methacrylate
Light scattering
counters
light scattering
Quartz
Lasers
Periodic structures
Diffraction gratings
polymers
gratings (spectra)
X ray scattering
Titration
Polymer films
swelling
titration
Topography
Diffraction patterns

Keywords

  • chemistry
  • laser light scattering
  • hydrogel

Cite this

Swann, J. M. G., Bras, W., Howse, J. R., Topham, P., & Ryan, A. J. (2010). Quantifying hydrogel response using laser light scattering. Soft matter, 6(4), 743-749. https://doi.org/10.1039/b918249g
Swann, Joshua M.G. ; Bras, Wim ; Howse, Jonathan R. ; Topham, Paul ; Ryan, Anthony J. / Quantifying hydrogel response using laser light scattering. In: Soft matter. 2010 ; Vol. 6, No. 4. pp. 743-749.
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Swann, JMG, Bras, W, Howse, JR, Topham, P & Ryan, AJ 2010, 'Quantifying hydrogel response using laser light scattering' Soft matter, vol. 6, no. 4, pp. 743-749. https://doi.org/10.1039/b918249g

Quantifying hydrogel response using laser light scattering. / Swann, Joshua M.G.; Bras, Wim; Howse, Jonathan R.; Topham, Paul; Ryan, Anthony J.

In: Soft matter, Vol. 6, No. 4, 2010, p. 743-749.

Research output: Contribution to journalArticle

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