ISIS Neutron and Muon Source Data Journal

Origin of co-nonsolvency, based on the Flory-Huggins interaction parameters of PDEA in deuterated water/ethanol mixtures

Abstract: Co-solvency and Co-nonsolvency are two extreme phenomena in the field of polymer solution. The former is the phenomenon that a mixture of two nonsolvent forms a good solvent for a polymer, and the latter is the reverse rare phenomenon that the solubility of polymer in a mixture of good solvents vanishes. The origin of co-nonsolvency has been debated for decades. The argument now is concentrating on whether or not the mixed solvent structure can influence polymer solubility. To clarify this, we propose to use poly(n,n¿-diethyl acrylamide) (PDEA) water/ethanol solution as a model system, and small angle neutron scattering (SANS) as the main tool to reveal the origin of co-nonsolvency. From the three Flory-Huggins interaction parameters in the model system, contribution of mixed solvent structure in the solubility of PDEA can be evaluated as a function of d-ethanol content and temperature.

Principal Investigator: Dr He Cheng
Experimenter: Dr Taisen Zuo

DOI: 10.5286/ISIS.E.RB1510077

ISIS Experiment Number: RB1510077

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 He Cheng et al; (2015): Origin of co-nonsolvency, based on the Flory-Huggins interaction parameters of PDEA in deuterated water/ethanol mixtures, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1510077

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