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Preparation and application of polyvinylidene fluoride ultrafiltration membranes by non-solovent induced phaseinversion method

Lv Xiaolong,Wu Chunrui,Zhang Hao,Zhao Lihua

Strategic Study of CAE 2014, Volume 16, Issue 12,   Pages 35-45

Abstract:

The non-solvent phase separation (NIPS) is a highly efficient membraneIn this paper， we made a brief introduction about the research progress on the phase separation theory

Keywords： non-solvent induced phase inversion     polyvinylidene fluoride     ultrafiltration membrane     phase separation    

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Solvent-resistant porous membranes using poly(ether−ether ketone): preparation and application

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1536-1559 doi: 10.1007/s11705-022-2221-8

Abstract: membranes are illustrated concretely, including conventional thermal-induced and non-solvent-induced phase

Keywords： PEEK     phase inversion     solvent-resistant membrane     nanofiltration     membrane contactor    

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Polysulfone and zirconia composite separators for alkaline water electrolysis

Li XU, Wei LI, Yan YOU, Shaoxing ZHANG, Yingchun ZHAO

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 154-161 doi: 10.1007/s11705-013-1331-8

Abstract: The novel composite separators composed of polysulfone and zirconia were prepared by phase inversion

Keywords： phase inversion     separator     alkaline water electrolysis     mechanical and chemical stability    

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The construction of pseudo-Janus silica/surfactant assembly and their application to stabilize Pickering emulsions and enhance oil recovery

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1101-1113 doi: 10.1007/s11705-021-2095-1

Abstract: Nanoparticles with high surface energy and chemical activity have drawn substantial attention in petroleum industry. Recently, Janus nanoparticles exhibited tremendous potential in enhanced oil recovery (EOR) due to their asymmetric structures and properties. In this study, a series of amphiphilic pseudo-Janus@OTAB (PJ@C18) nanoparticles with different concentrations of stearyltrimethylammoium bromide (OTAB) were successfully fabricated. The structures and properties of PJ@C18 were characterized by Fourier transform infrared spectroscopy and ζ-potential measurements. Based on the emulsification experimental results, the interaction models and the self-assembly behavior between hydrophilic nanoparticles (SiO2@NH2) and OTAB molecules at the oil/water interface were proposed, which was further confirmed via the measurements of the contact angle and dynamic interfacial tension. Interestingly, it was found that the change of pH value from 7.5 to 4.0 caused the type reversal of the PJ@C18-1000 stabilized Pickering emulsions. Furthermore, the PJ@C18-1000 stabilized Pickering emulsion system with excellent salt and temperature tolerances (10000 mg∙L–1, 90 °C) significantly improved the oil recovery in the single-tube (more than 17%) and double-tube (more than 25%) sand pack model flooding tests. The findings of this study could help to better understand the construction mechanism of pseudo-Janus silica/surfactant assembly and the potential application of PJ@C18-1000 stabilized Pickering emulsions for EOR.

Keywords： Janus nanoparticles     surfactant     double phase inversion     self-assembly     enhanced oil recovery    

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Preparation and performance of homogeneous cellulose forward osmosis membrane

Zhang Bingtao,Zhang Lin,Huang He,Hou Li’an

Strategic Study of CAE 2014, Volume 16, Issue 7,   Pages 57-61

Abstract: text-align: justify;">The nonporous homogeneous cellulose membrane for forward osmosis was prepared via phaseinversion method using ionic liquid 1-ethyl-3-methyl-imidazolium acetate (EMIMAc) as solvent, water

Keywords： forward osmosis     ionic liquid     cellulose membrane     phase inversion     membrane preparation    

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Advances in preparation methods of smart polymeric gating membranes

Xie Rui,Liu Zhuang,Ju Xiaojie,Wang Wei,Chu Liangyin

Strategic Study of CAE 2014, Volume 16, Issue 12,   Pages 94-101

Abstract:

Smart polymeric gating membranes are composed of smart polymers and non-stimuli-responsive substrate membrane. The smart membranes can automatically change the hydrophilicity/hydrophobicity on the surface as well as trans-membrane permeability and selectivity in response to the environmental stimuli， which is attributable to the stimuli-responsive variation of hydrophilicity/hydrophobicity and configuration of the smart polymers in the membrane. Smart polymeric gating membranes are used for anti-fouling filtration， affinity separation， “on/off” control of enzyme reaction and controlled release， etc. The way to prepare such membranes affects the important parameters of smart polymeric gating membranes， such as the stimuli-responsive characteristics， stability and reproducibility. There are three kinds of preparation methods to fabricate the smart polymeric gating membranes according to when the smart polymers are added into the membrane materials. They are the methods introducing smart polymers by the modification of substrate membranes materials after membrane preparation， by the modification of substrate membrane materials before membrane preparation and by blending smart polymers during the membrane preparation. The definitions， subcategory， mechanisms and new advances of these preparation methods are introduced separately， and their advantages and disadvantages are addressed. The method that introduces smart polymers by the modification of substrate membranes materials after membrane preparation is the most widely employed to form the smart polymeric gating membranes. However， the method that blends smart polymers during the membrane preparation has great potentials to the mass production of smart polymeric gating membranes in the future. This paper will provide valuable guidance for the efficient preparation of smart polymeric gating membranes with stable and satisfactory stimuli-responsive characteristics.

Keywords： smart polymeric membranes     smart cross-linked gel     smart linear polymer     preparative method     phase inversion    

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Kinematical synthesis of an inversion of the double linked fourbar for morphing wing applications

J. AGUIRREBEITIA, R. AVILéS, I. FERNáNDEZ, M. ABASOLO

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 1,   Pages 17-32 doi: 10.1007/s11465-013-0364-5

Abstract:

This paper presents the kinematical features of an inversion of the double linked fourbar for morphing

Keywords： morphing wing     structural synthesis     dimensional synthesis     geometrical kinematics    

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Meshless numerical method based on tensor product

SUN Haitao, WANG Yuanhan, MIAO Yu

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 166-171 doi: 10.1007/s11709-008-0021-y

Abstract: Owing to expanded basis functions selection, some drawbacks in general MLS method, for example repeated inversion

Keywords： mathematical     continuity     inversion     selection     efficient    

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Frequency-Domain Full-Waveform Inversion Based on Tunnel Space Seismic Data Article

Mingyu Yu,Fei Cheng,Jiangping Liu,Daicheng Peng,Zhijian Tian

Engineering 2022, Volume 18, Issue 11,   Pages 197-206 doi: 10.1016/j.eng.2021.06.018

Abstract: Thus, we apply a frequency-domain acoustic full-waveform inversion (FWI) method to obtain high-resolutionof the frequency group selection strategy and the tunnel observation system settings regarding the inversionresults and determine the structural imaging and physical property parameter inversion of abnormal geologicalthe influence of the length of the two sides of the observation systems of different tunnels on the inversionWe determined that the inversion results are best when the side length is approximately five times the

Keywords： Tunnel seismic detection     Full-waveform inversion     Frequency select strategy     Observation system    

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The research of inversion algorithm of significant wave height with high resolution based HY-2 waveform

Wang Guizhong,Zhang Jie,Miao Hongli,Li Guoqiang,Wang Xin

Strategic Study of CAE 2014, Volume 16, Issue 6,   Pages 60-64

Abstract: Based on HY-2 altimeter waveform data, we develop an inversion algorithm of SWH with high-resolution.Applied this method to one pass waveform data, the result shows the inversion algorithm is effective.

Keywords： HY-2     significant wave height     inversion algorithm     high resolution    

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Microfluidic production of liposomes through liquid–liquid phase separation in ternary droplets

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 1017-1022 doi: 10.1007/s11705-021-2118-y

Abstract: For demonstration, we used butyl acetate-water-ethanol ternary mixtures as inner phase and an aqueoussolution of surfactants as outer phase to make oil-in-water droplets, which can evolve into water-in-oil-in-waterdouble emulsion droplets by liquid–liquid phase separation of ternary mixtures.

Keywords： microfluidics     liposomes     ternary droplets     phase separation    

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Construction and Application of a Regional Kilometer-Scale Carbon Source and Sink Assimilation Inversion

Lifeng Guo,Xiaoye Zhang,Junting Zhong,Deying Wang,Changhong Miao,Licheng Zhao,Zijiang Zhou,Jie Liao,Bo Hu,Lingyun Zhu,Yan Chen,

Engineering doi: 10.1016/j.eng.2023.02.017

Abstract: The MVS approach relies on the top-down assimilation and inversion of atmospheric CO2 concentrationsHowever, the regional high-resolution assimilation and inversion method is still in its initial stageassimilate information on atmospheric CO2 and other related information and realize the inversionAtmospheric CO2 data were collected from six ground-based monitoring sites in Shanxi to verify the inversion

Keywords： CCMVS-R     Regional carbon assimilation system     Anthropogenic carbon emissions     CO2     POD 4DVar    

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Advances and perspectives in catalysts for liquid-phase oxidation of cyclohexane

Hui LI, Yuanbin SHE, Tao WANG

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3,   Pages 356-368 doi: 10.1007/s11705-012-0903-3

Abstract: The latest progress and developments in catalysts for the oxidation of cyclohexane are reviewed. Catalytic systems for the oxidation of cyclohexane including metal supported, metal oxides, molecular sieves, metal substituted polyoxometalates, photocatalysts, organocatalysts, Gif systems, metal-organic catalysts and metalloporphyrins are discussed with a particular emphasis on metalloporphyrin catalytic systems. The advantages and disadvantages of these methods are summarized and analyzed. Finally, the development trends in the oxidation technology of cyclohexane are examined.

Keywords： cyclohexane     liquid-phase oxidation     catalysis    

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Simulation of heterogeneous two-phase media using random fields and level sets

George STEFANOU

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 114-120 doi: 10.1007/s11709-014-0267-5

Abstract: This paper provides a critical examination of existing random field models of heterogeneous two-phase

Keywords： microstructure     random fields     level sets     shape recovery     two-phase media    

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Phase transition regulation and caloric effect

Frontiers in Energy 2023, Volume 17, Issue 4,   Pages 463-477 doi: 10.1007/s11708-023-0860-1

Abstract: Solid state refrigeration based on caloric effect is regarded as a potential candidate for replacing vapor-compression refrigeration. Numerous methods have been proposed to optimize the refrigeration properties of caloric materials, of which single field tuning as a relatively simple way has been systemically studied. However, single field tuning with few tunable parameters usually obtains an excellent performance in one specific aspect at the cost of worsening the performance in other aspects, like attaining a large caloric effect with narrowing the transition temperature range and introducing hysteresis. Because of the shortcomings of the caloric effect driven by a single field, multifield tuning on multicaloric materials that have a coupling between different ferro-orders came into view. This review mainly focuses on recent studies that apply this method to improve the cooling performance of materials, consisting of enlarging caloric effects, reducing hysteresis losses, adjusting transition temperatures, and widening transition temperature spans, which indicate that further progress can be made in the application of this method. Furthermore, research on the sign of lattice and spin contributions to the magnetocaloric effect found new phonon evolution mechanisms, calling for more attention on multicaloric effects. Other progress including improving cyclability of FeRh alloys by introducing second phases and realizing a large reversible barocaloric effect by hybridizing carbon chains and inorganic groups is described in brief.

Keywords： phase transition regulation     caloric effect     solid state refrigeration    

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Title Author Date Type Operation

Preparation and application of polyvinylidene fluoride ultrafiltration membranes by non-solovent induced phaseinversion method

Lv Xiaolong,Wu Chunrui,Zhang Hao,Zhao Lihua

Journal Article

Solvent-resistant porous membranes using poly(ether−ether ketone): preparation and application

Journal Article

Polysulfone and zirconia composite separators for alkaline water electrolysis

Li XU, Wei LI, Yan YOU, Shaoxing ZHANG, Yingchun ZHAO

Journal Article

The construction of pseudo-Janus silica/surfactant assembly and their application to stabilize Pickering emulsions and enhance oil recovery

Journal Article

Preparation and performance of homogeneous cellulose forward osmosis membrane

Zhang Bingtao,Zhang Lin,Huang He,Hou Li’an

Journal Article

Advances in preparation methods of smart polymeric gating membranes

Xie Rui,Liu Zhuang,Ju Xiaojie,Wang Wei,Chu Liangyin

Journal Article

Kinematical synthesis of an inversion of the double linked fourbar for morphing wing applications

J. AGUIRREBEITIA, R. AVILéS, I. FERNáNDEZ, M. ABASOLO

Journal Article

Meshless numerical method based on tensor product

SUN Haitao, WANG Yuanhan, MIAO Yu

Journal Article

Frequency-Domain Full-Waveform Inversion Based on Tunnel Space Seismic Data

Mingyu Yu,Fei Cheng,Jiangping Liu,Daicheng Peng,Zhijian Tian

Journal Article

The research of inversion algorithm of significant wave height with high resolution based HY-2 waveform

Wang Guizhong,Zhang Jie,Miao Hongli,Li Guoqiang,Wang Xin

Journal Article

Microfluidic production of liposomes through liquid–liquid phase separation in ternary droplets

Journal Article

Construction and Application of a Regional Kilometer-Scale Carbon Source and Sink Assimilation Inversion

Lifeng Guo,Xiaoye Zhang,Junting Zhong,Deying Wang,Changhong Miao,Licheng Zhao,Zijiang Zhou,Jie Liao,Bo Hu,Lingyun Zhu,Yan Chen,

Journal Article

Advances and perspectives in catalysts for liquid-phase oxidation of cyclohexane

Hui LI, Yuanbin SHE, Tao WANG

Journal Article

Simulation of heterogeneous two-phase media using random fields and level sets

George STEFANOU

Journal Article

Phase transition regulation and caloric effect

Journal Article