ISIS Neutron and Muon Source Data Journal

Multi-responsive microgels: simultaneous structure and dynamics

Abstract: We propose to investigate a temperature and pH responsive microgel composed of Interpenetrating Polymer Networks (IPN) of poly(N-isopropylacrylamide) (PNIPAM) and poly(acrylic) acid (PAAc). Our group has investigated the behaviour of both PNIPAM and IPN microgels as a function of temperature, concentration, pH and acrylic acid content, by combining DLS, XPCS, SANS, SAXS, TEM, Raman and IR spectroscopy, rheology, calorimetry and electrophoretic measurements. The aim of this experiment is to simultaneously explore the slowing down of the dynamics and how this is correlated to structural changes of the system approaching the glass transition. The use of the new portable DLS-SANS apparatus we have pioneered and recently made available at ISIS will allow us to perform this study never carried out not only in microgels but also in other soft matter systems.

Principal Investigator: Dr Barbara Ruzicka
Experimenter: Miss Elisa Ballin
Experimenter: Dr Roberta Angelini
Local Contact: Dr Najet Mahmoudi
Experimenter: Dr Silvia Franco
Experimenter: Dr Valentina Nigro
Experimenter: Dr Elena Buratti

DOI: 10.5286/ISIS.E.RB2210104

ISIS Experiment Number: RB2210104

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Barbara Ruzicka et al; (2022): Multi-responsive microgels: simultaneous structure and dynamics, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2210104

Data is released under the CC-BY-4.0 license.