DataVXAdvanced MaterialsPaper
journal article·2024-05

Engineering Dual CO2‐ and Photothermal‐Responsive Membranes for Switchable Double Emulsion Separation

Haohao Liu, Yangyang Wang, Bo Zhu, Hao Li, Lijun Liang, Jian Li, Dewei Rao, Qiang Yan, Yunxiang Bai, Chunfang Zhang, Liangliang Dong, Hong Meng, Yue Zhao

Advanced Materials· Volume 36· Issue 19
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Source abstract

Abstract

Abstract Stimulus‐responsive membranes demonstrate promising applications in switchable oil/water emulsion separations. However, they are unsuitable for the treatment of double emulsions like oil‐in‐water‐in‐oil (O/W/O) and water‐in‐oil‐in‐water (W/O/W) emulsions. For efficient separation of these complicated emulsions, fine control over the wettability, response time, and aperture structure of the membrane is required. Herein, dual‐coated fibers consisting of primary photothermal‐responsive and secondary CO2‐responsive coatings are prepared by two steps. Automated weaving of these fibers produces membranes with photothermal‐ and CO2‐responsive characteristics and narrow pore size distributions. These membranes exhibit fast switching wettability between superhydrophilicity (under CO2 stimulation) and high hydrophobicity (under near‐infrared stimulation), achieving on‐demand separation of various O/W/O and W/O/W emulsions with separation efficiencies exceeding 99.6%. Two‐dimensional low‐field nuclear magnetic resonance and correlated spectra technique are used to clarify the underlying mechanism of switchable double emulsion separation. The approach can effectively address the challenges associated with the use of stimulus‐responsive membranes for double emulsion separation and facilitate the industrial application of these membranes.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Pickering emulsions and particle stabilization · Surface Modification and Superhydrophobicity · Electrohydrodynamics and Fluid Dynamics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Synthetic and Biological Colloids Ministry of Education School of Chemical and Material Engineering Jiangnan University Wuxi 214122 P. R. China

Key Laboratory of Eco‐textiles Ministry of Education Jiangnan University Wuxi 214122 P. R. China

School of Chemical Engineering and Technology Hebei University of Technology Tianjin 300130 P. R. China

College of Automation Hangzhou Dianzi University Hangzhou 310018 P. R. China

Laboratory of Environmental Biotechnology Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology Jiangsu Key Laboratory of Anaerobic Biotechnology School of Environmental and Civil Engineering Jiangnan University Wuxi 214122 P. R. China

School of Materials Science and Engineering Jiangsu University Zhenjiang 212013 P. R. China

State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai 200433 P. R. China

State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of Chemistry Xinjiang University Urumqi 830046 P. R. China

Département de Chimie Université de Sherbrooke Sherbrooke QC J1K 2R1 Canada

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities · Natural Science Foundation of Xinjiang Uygur Autonomous Region

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