Fluctuation suppression in microgels by polymer electrolytes

Structural Dynamics, vol. 7, pp. 034302

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.

Authors 8

1. Stefano Pasini Aachen 4Institute of Physical Chemistry

   Oak Ridge National Laboratory · Forschungszentrum Jülich · Heinz Maier-Leibnitz Zentrum · RWTH Aachen University

   Affiliation as printed

   Forschungszentrum Jülich GmbH, JCNS at Heinz Maier-Leibnitz Zentrum 1 , Lichtenbergstraße 1, 85747 Garching,

   2NScD, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

   4Institute of Physical Chemistry, RWTH Aachen University, 52056 Aachen and JARA-SOFT 52056 Aachen, Germany

   Forschungszentrum Jülich GmbH, JCNS at Heinz Maier-Leibnitz Zentrum 1 , Lichtenbergstraße 1, 85747 Garching, Germany

2. Simona Maccarrone Aachen 4Institute of Physical Chemistry

   Oak Ridge National Laboratory · Forschungszentrum Jülich · Heinz Maier-Leibnitz Zentrum · RWTH Aachen University

   Affiliation as printed

   Forschungszentrum Jülich GmbH, JCNS at Heinz Maier-Leibnitz Zentrum 1 , Lichtenbergstraße 1, 85747 Garching,

   2NScD, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

   4Institute of Physical Chemistry, RWTH Aachen University, 52056 Aachen and JARA-SOFT 52056 Aachen, Germany

   Forschungszentrum Jülich GmbH, JCNS at Heinz Maier-Leibnitz Zentrum 1 , Lichtenbergstraße 1, 85747 Garching, Germany

3. Noemi Kinga Szekely Aachen 4Institute of Physical Chemistry

   Oak Ridge National Laboratory · Forschungszentrum Jülich · Heinz Maier-Leibnitz Zentrum · RWTH Aachen University

   Affiliation as printed

   Forschungszentrum Jülich GmbH, JCNS at Heinz Maier-Leibnitz Zentrum 1 , Lichtenbergstraße 1, 85747 Garching,

   2NScD, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

   4Institute of Physical Chemistry, RWTH Aachen University, 52056 Aachen and JARA-SOFT 52056 Aachen, Germany

   Forschungszentrum Jülich GmbH, JCNS at Heinz Maier-Leibnitz Zentrum 1 , Lichtenbergstraße 1, 85747 Garching, Germany

4. Laura R. Stingaciu Aachen 4Institute of Physical Chemistry

   Oak Ridge National Laboratory · RWTH Aachen University

   Affiliation as printed

   NScD, Oak Ridge National Laboratory 2 , Oak Ridge, Tennessee 37831,

   4Institute of Physical Chemistry, RWTH Aachen University, 52056 Aachen and JARA-SOFT 52056 Aachen, Germany

   NScD, Oak Ridge National Laboratory 2 , Oak Ridge, Tennessee 37831, USA

5. Arjan P. H. Gelissen Aachen Institute of Physical Chemistry 4Institute of Physical Chemistry

   Oak Ridge National Laboratory · RWTH Aachen University

   Affiliation as printed

   Institute of Physical Chemistry, RWTH Aachen University 3 , 52056 Aachen,

   2NScD, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

   4Institute of Physical Chemistry, RWTH Aachen University, 52056 Aachen and JARA-SOFT 52056 Aachen, Germany

   Institute of Physical Chemistry, RWTH Aachen University 3 , 52056 Aachen, Germany

6. Walter H. Richtering Aachen Institute of Physical Chemistry 3Institute of Physical Chemistry

   Oak Ridge National Laboratory · RWTH Aachen University

   Affiliation as printed

   Institute of Physical Chemistry, RWTH Aachen University 4 , 52056 Aachen and JARA-SOFT 52056 Aachen,

   2NScD, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

   3Institute of Physical Chemistry, RWTH Aachen University, 52056 Aachen, Germany

   Institute of Physical Chemistry, RWTH Aachen University 4 , 52056 Aachen and JARA-SOFT 52056 Aachen, Germany

7. Michael Monkenbusch Aachen 4Institute of Physical Chemistry

   Oak Ridge National Laboratory · Forschungszentrum Jülich · RWTH Aachen University

   Affiliation as printed

   Jülich Centre for Neutron Science (JCNS) & Institute for Complex Systems (ICS), Forschungszentrum Jülich GmbH 5 , 52428 Jülich,

   2NScD, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

   4Institute of Physical Chemistry, RWTH Aachen University, 52056 Aachen and JARA-SOFT 52056 Aachen, Germany

   Jülich Centre for Neutron Science (JCNS) & Institute for Complex Systems (ICS), Forschungszentrum Jülich GmbH 5 , 52428 Jülich, Germany

8. Olaf Holderer Aachen 4Institute of Physical Chemistry

   Oak Ridge National Laboratory · Forschungszentrum Jülich · Heinz Maier-Leibnitz Zentrum · RWTH Aachen University

   Affiliation as printed

   Forschungszentrum Jülich GmbH, JCNS at Heinz Maier-Leibnitz Zentrum 1 , Lichtenbergstraße 1, 85747 Garching,

   2NScD, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

   4Institute of Physical Chemistry, RWTH Aachen University, 52056 Aachen and JARA-SOFT 52056 Aachen, Germany

   Forschungszentrum Jülich GmbH, JCNS at Heinz Maier-Leibnitz Zentrum 1 , Lichtenbergstraße 1, 85747 Garching, Germany