ISIS Neutron and Muon Source Data Journal

Solution structure and viscoelasticity of cellulose ethers in the presence of chaotropic nano-ions

Abstract: Cellulose ethers, such as hydroxypropyl cellulose (HPC) are widely-used commcercial viscosifying agents due to their high molecular stiffness, in comparison to classical synthetic polymers like PS , and their tendency to self-aggregate in solution. In this research project we study the effects of chaotropic (water structure-breaking) and hydrophobic nanometric ions on the solution structure and rheology of HPC. We observed that the chaotropic nano-ion induced stronger effects on HPC rheology - a drastic viscosity increase towards gelation at millimolar concentrations - than the corresponding ionic surfactant (SDS)/polymer system. Interestingly, upon heating the viscosity of the nano-ion/HPC-complex was found to decrease drastically, which is uncommon for HPC that gels upon heating. With this proposal we aim to correlate the temperature induced viscosity trend with the solution structure.

Local Contact: Dr Leide Cavalcanti
Experimenter: Dr Max Hohenschutz
Experimenter: Dr Carlos Lopez
Experimenter: Mr Can Hou

DOI: 10.5286/ISIS.E.RB2210106

ISIS Experiment Number: RB2210106

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 Leide Cavalcanti et al; (2022): Solution structure and viscoelasticity of cellulose ethers in the presence of chaotropic nano-ions, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2210106

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