Fluctuation suppression in microgels by polymer electrolytes

S. Pasini; S. Maccarrone; N. K. Székely; L. R. Stingaciu; A. P.H. Gelissen; W. Richtering; M. Monkenbusch; O. Holderer

doi:10.1063/4.0000014

Fluctuation suppression in microgels by polymer electrolytes

S. Pasini, S. Maccarrone, N. K. Székely, L. R. Stingaciu, A. P.H. Gelissen, W. Richtering, M. Monkenbusch, O. Holderer

SANS & Spin Echo

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Abstract

Structural details of thermoresponsive, cationically poly(N-iso-propylacrylamide-co-methacrylamido propyl trimethyl ammonium chloride) microgels and the influence of the anionic electrolyte polystyrene sulfonate (PSS) on the internal structure and dynamics of the cationic microgels have been studied with a combination of small angle neutron scattering (SANS) and neutron spin echo (NSE) spectroscopy. While SANS can yield information on the overall size of the particles and on the typical correlation length inside the particles, studying the segmental polymer dynamics with NSE gives access to more internal details, which only appear due to their effect on the polymer motion. The segmental dynamics of the microgels studied in this paper is to a large extent suppressed by the PSS additive. Possible scenarios of the influence of the polyanions on the microgel structure and dynamics are discussed.

Original language	English
Article number	034302
Journal	Structural Dynamics
Volume	7
Issue number	3
DOIs	https://doi.org/10.1063/4.0000014
State	Published - May 1 2020

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abstract = "Structural details of thermoresponsive, cationically poly(N-iso-propylacrylamide-co-methacrylamido propyl trimethyl ammonium chloride) microgels and the influence of the anionic electrolyte polystyrene sulfonate (PSS) on the internal structure and dynamics of the cationic microgels have been studied with a combination of small angle neutron scattering (SANS) and neutron spin echo (NSE) spectroscopy. While SANS can yield information on the overall size of the particles and on the typical correlation length inside the particles, studying the segmental polymer dynamics with NSE gives access to more internal details, which only appear due to their effect on the polymer motion. The segmental dynamics of the microgels studied in this paper is to a large extent suppressed by the PSS additive. Possible scenarios of the influence of the polyanions on the microgel structure and dynamics are discussed.",

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AU - Pasini, S.

AU - Maccarrone, S.

AU - Székely, N. K.

AU - Stingaciu, L. R.

AU - Gelissen, A. P.H.

AU - Richtering, W.

AU - Monkenbusch, M.

AU - Holderer, O.

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AB - Structural details of thermoresponsive, cationically poly(N-iso-propylacrylamide-co-methacrylamido propyl trimethyl ammonium chloride) microgels and the influence of the anionic electrolyte polystyrene sulfonate (PSS) on the internal structure and dynamics of the cationic microgels have been studied with a combination of small angle neutron scattering (SANS) and neutron spin echo (NSE) spectroscopy. While SANS can yield information on the overall size of the particles and on the typical correlation length inside the particles, studying the segmental polymer dynamics with NSE gives access to more internal details, which only appear due to their effect on the polymer motion. The segmental dynamics of the microgels studied in this paper is to a large extent suppressed by the PSS additive. Possible scenarios of the influence of the polyanions on the microgel structure and dynamics are discussed.

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Fluctuation suppression in microgels by polymer electrolytes

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