Structural changes of poly(N-isopropylacrylamide)-based microgels induced by hydrostatic pressure and temperature studied by small angle neutron scattering

The Journal of Chemical Physics
J J Lietor-SantosA Fernandez-Nieves

Abstract

We study the structural properties of microgels made of poly(N-isopropylacrylamide) and acrylic acid as a function of hydrostatic pressure and temperature using small angle neutron scattering. Hydrostatic pressure induces particle deswelling by changing the mixing of the microgel with the solvent, similar to temperature. We extend this analogy to the structural properties of the particles and show that the form factor at a certain temperature is equal to the form factor at a certain hydrostatic pressure. We fit the results with an existent model for the microgel structure and carefully analyze the fitting procedure in order to obtain physically meaningful values of the free parameters in the model.

References

Nov 1, 1979·The Journal of Infectious Diseases·K M CunninghamE R Rhoades
Mar 4, 2000·Advances in Colloid and Interface Science·R Pelton
Nov 10, 2001·Annual Review of Biomedical Engineering·N A PeppasJ Zhang
Jan 7, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A Fernández-BarberoE López-Cabarcos
Mar 5, 2004·Physical Review Letters·D GottwaldH Löwen
Jul 23, 2004·The Journal of Chemical Physics·A Fernández-NievesA Fernández-Barbero
Jul 23, 2004·The Journal of Chemical Physics·Markus StiegerPeter Lindner
Aug 11, 2004·Langmuir : the ACS Journal of Surfaces and Colloids·Markus StiegerWalter Richtering
May 21, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·T G Mason, M Y Lin
Jun 23, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Brian R Saunders
Jul 5, 2005·Science·A M AlsayedA G Yodh
Apr 6, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·B Sierra-MartínA Fernández-Barbero
Jan 27, 2007·The Journal of Physical Chemistry. B·Todd Hoare, Robert Pelton
Oct 28, 2008·The Journal of Physical Chemistry. B·P S Mohanty, W Richtering
Mar 21, 2009·The Journal of Physical Chemistry. B·Zhiyong MengL Andrew Lyon
May 21, 2009·Angewandte Chemie·Ashlee St John Iyer, L Andrew Lyon
Nov 6, 2009·Nature·Johan MattssonDavid A Weitz

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Citations

Apr 3, 2012·The Journal of Chemical Physics·Giovanni RomeoDavid A Weitz
Nov 28, 2013·Advances in Colloid and Interface Science·Benjamin Sierra-MartinEnrique López Cabarcos
Jul 17, 2013·Analytica Chimica Acta·Molla R IslamMichael J Serpe
Jun 22, 2015·The Journal of Chemical Physics·A ScottiA Fernandez-Nieves
Jul 24, 2014·The Journal of Chemical Physics·U GasserA Fernandez-Nieves
Jan 24, 2015·The Journal of Chemical Physics·Mary M HedrickAlan R Denton
Apr 30, 2016·Proceedings of the National Academy of Sciences of the United States of America·Andrea ScottiAlberto Fernández-Nieves
Mar 5, 2016·The Journal of Chemical Physics·M A SchroerG Grübel
Apr 20, 2018·Reports on Progress in Physics·Gregory B McKenna
May 22, 2019·Physical Review. E·U GasserA Fernandez-Nieves
Dec 18, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·U GasserA Fernandez-Nieves

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Methods Mentioned

BETA
small angle neutron scattering
dynamic light scattering
SANS

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