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Xi Y, Murphy RP, Zhang Q, Zemborain A, Narayanan S, Chae J, Choi SQ, Fluerasu A, Wiegart L, Liu Y. Rheology and dynamics of a solvent segregation driven gel (SeedGel). SOFT MATTER 2023; 19:233-244. [PMID: 36511219 DOI: 10.1039/d2sm01129h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Bicontinuous structures promise applications in a broad range of research fields, such as energy storage, membrane science, and biomaterials. Kinetically arrested spinodal decomposition is found responsible for stabilizing such structures in different types of materials. A recently developed solvent segregation driven gel (SeedGel) is demonstrated to realize bicontinuous channels thermoreversibly with tunable domain sizes by trapping nanoparticles in a particle domain. As the mechanical properties of SeedGel are very important for its future applications, a model system is characterized by temperature-dependent rheology. The storage modulus shows excellent thermo-reproducibility and interesting temperature dependence with the maximum storage modulus observed at an intermediate temperature range (around 28 °C). SANS measurements are conducted at different temperatures to identify the macroscopic solvent phase separation during the gelation transition, and solvent exchange between solvent and particle domains that is responsible for this behavior. The long-time dynamics of the gel is further studied by X-ray Photon Correlation Spectroscopy (XPCS). The results indicate that particles in the particle domain are in a glassy state and their long-time dynamics are strongly correlated with the temperature dependence of the storage modulus.
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Affiliation(s)
- Yuyin Xi
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA.
- Department of Chemical & Biomolecular Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Ryan P Murphy
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA.
| | - Qingteng Zhang
- X-Ray Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Aurora Zemborain
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL 60637, USA
| | - Suresh Narayanan
- X-Ray Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Junsu Chae
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Siyoung Q Choi
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Andrei Fluerasu
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Lutz Wiegart
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Yun Liu
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA.
- Department of Chemical & Biomolecular Engineering, University of Delaware, Newark, DE, 19716, USA
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Han Y, Tan J, Wang D, Xu K, An H. Novel approach to promote the hydrophobic association: Introduction of short alkyl chains into hydrophobically associating polyelectrolytes. J Appl Polym Sci 2019. [DOI: 10.1002/app.47581] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yuhao Han
- College of Chemistry, Chemical Engineering and Environmental Engineering; Liaoning Shihua University; Fushun Liaoning Province 113001 People's Republic of China
| | - Jiawen Tan
- College of Chemistry, Chemical Engineering and Environmental Engineering; Liaoning Shihua University; Fushun Liaoning Province 113001 People's Republic of China
| | - Dongping Wang
- College of Chemistry, Chemical Engineering and Environmental Engineering; Liaoning Shihua University; Fushun Liaoning Province 113001 People's Republic of China
| | - Kun Xu
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Science; Changchun Jilin Province 130022 People's Republic of China
| | - Huiyong An
- College of Chemistry, Chemical Engineering and Environmental Engineering; Liaoning Shihua University; Fushun Liaoning Province 113001 People's Republic of China
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