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Uncovering the effect of poly(ethylene-co-vinyl alcohol) molecular weight and vinyl alcohol content on morphology, antifouling, and permeation properties of polysulfone ultrafiltration membrane: thermodynamic and formation hydrodynamic behavior

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1484-1502 doi: 10.1007/s11705-023-2331-y

Abstract: Various hydrophilic poly(ethylene-co-vinyl alcohol) (EVOH) were used herein to precisely control the structure and hydrodynamic properties of polysulfone (PSF) membranes. Particularly, to prepare pristine PSF and PSF/EVOH blends with increasing vinyl alcohol (VOH: 73%, 68%, 56%), the non-solvent-induced phase separation (NIPS) technique was used. Polyethylene glycol was used as a compatibilizer and as a porogen in N,N-dimethylacetamide. Rheological and ultrasonic separation kinetic measurements were also carried out to develop an ultrafiltration membrane mechanism. The extracted membrane properties and filtration capabilities were systematically compared to the proposed mechanism. Accordingly, the addition of EVOH led to an increase in the rheology of the dopes. The resulting membranes exhibited a microporous structure, while the finger-like structures became more evident with increasing VOH content. The PSF/EVOH behavior was changed from immediate to delayed segregation due to a change in the hydrodynamic kinetics. Interestingly, the PSF/EVOH32 membranes showed high hydrophilicity and achieved a pure water permeability of 264 L·m–2·h–1·bar–1, which was higher than that of pure PSF membranes (171 L·m–2·h–1·bar–1). In addition, PSF/EVOH32 rejected bovine serum albumin at a high rate (> 90%) and achieved a significant restoration of permeability. Finally, from the thermodynamic and hydrodynamic results, valuable insights into the selection of hydrophilic copolymers were provided to tailor the membrane structure while improving both the permeability and antifouling performance.

Keywords： polysulfone     blend modification     ultrafiltration membrane     formation hydrodynamics     poly(ethylene-co-vinyl    

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Modeling of unconfined compressive strength of soil-RAP blend stabilized with Portland cement using multivariate

Ali Reza GHANIZADEH, Morteza RAHROVAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 787-799 doi: 10.1007/s11709-019-0516-8

Abstract: to develop a mathematical model for predicting the unconfined compressive strength (UCS) of soil-RAP blendThe results demonstrate that MARS has a great ability for prediction of the UCS in case of soil-RAP blend

Keywords： full-depth reclamation     soil-reclaimed asphalt pavement blend     Portland cement     unconfined compressive strength    

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Effects of pyrolyzed semi-char blend ratio on coal combustion and pollution emission in a 0.35 MW pulverized

Yonghong YAN, Liutao SUN, Zhengkang PENG, Hongliang QI, Li LIU, Rui SUN

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 78-90 doi: 10.1007/s11708-020-0678-z

Abstract: The effects of blend ratio on combustion and pollution emission characteristics for co-combustion ofAbove the 30% blend ratio, the increase in blend ratio postpones ignition in the primary stage and lowersWith the blend ratio increasing, NO emission at the furnace exit is smallest for the 30% blend ratioratio of semi-char is less than 45%, and carbon burnout changed a little at all blend ratios.So, an SC blend ratio of no more than 45% can be suitable for the burning of semi-char.

Keywords： pulverized-coal combustion     pyrolyzed semi-char     ignition characteristics     pollution emission     char burnout     blend    

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Sustainable functionalization and modification of materials via multicomponent reactions in water

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 9,   Pages 1318-1344 doi: 10.1007/s11705-022-2150-6

Abstract: ground providing essential design criteria to develop advanced tools for efficient functionalization and modificationTo date, there is no exclusive review to report the sustainable functionalization and modification ofkinds of multicomponent reactions in water and aqueous media as green methods for functionalization and modification

Keywords： materials     multicomponent reactions     modification     functionalization     water    

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An investigation on modification mechanism of CH

Qiang XIN, Shanghong HUANG

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3,   Pages 293-300 doi: 10.1007/s11709-017-0403-0

Abstract: is used as cross linking agent, the concentrated sulfuric acid is used as catalyst, and the chemical modificationModification mechanism of low temperature coal is studied by Scanning Electron Microscopy and other analytical

Keywords： low temperature     coal tar pitch     modification     road performance    

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Research progress on low dielectric constant modification of cellulose insulating paper for power transformers

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 8,   Pages 991-1009 doi: 10.1007/s11705-022-2259-7

Abstract: dielectric constant of a cellulose insulating paper can be effectively reduced by chemical or physical modificationThis study presents an overview of the foreign and domestic research status of the use of modification

Keywords： low dielectric constant     chemical and physical modification     cellulose insulating paper     transformer    

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Crystal modification of rifapentine using different solvents

Kun ZHOU, Jun LI, Jianhong LUO, Dongsheng ZHENG,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1,   Pages 65-69 doi: 10.1007/s11705-009-0302-6

Abstract: investigation on those developed crystals clearly indicate that rifapentine has different crystal structure modificationwas obtained from acetic acid, the change of crystal habit was originated from the crystal structure modification

Keywords： identical     scanning calorimetry     different     comparative dissolution     structure modification    

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Surface modification techniques of membranes to improve their antifouling characteristics: recent advancements

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1837-1865 doi: 10.1007/s11705-023-2347-3

Abstract: Surface modification techniques of membranes to improve their antifouling characteristics: recent advancements

Keywords： Surface modification techniques    

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RNA m6A modification and its function in diseases

Jiyu Tong, Richard A. Flavell, Hua-Bing Li

Frontiers of Medicine 2018, Volume 12, Issue 4,   Pages 481-489 doi: 10.1007/s11684-018-0654-8

Abstract: p>N6-methyladenosine (m6A) is the most common post-transcriptional RNA modificationthroughout the transcriptome, affecting fundamental aspects of RNA metabolism. m6A modificationin m6A research and highlight the functional relevance and importance of m6A modification

Keywords： RNA modification     m6A     immunity     cancer     epigenetics    

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Hydrophilic modification of poly(aryl sulfone) membrane materials toward highly-efficient environmental

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 614-633 doi: 10.1007/s11705-021-2115-1

Abstract: give a comprehensive overview on characterizations of hydrophilic membrane and diverse hydrophilic modificationapproaches of poly(aryl sulfone) membranes, predominantly including bulky, blending and surface modificationThe discussions on the different modification methods have been provided in-depth.Besides, focusing on modification methods and performance of modified membranes, the related mechanisms

Keywords： poly(aryl sulfone)     membrane separations     modification     hydrophilicity     water treatment    

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Feasibility of bubble surface modification for natural organic matter removal from river water using

Yulong Shi, Jiaxuan Yang, Jun Ma, Congwei Luo

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 6, doi: 10.1007/s11783-017-0954-2

Abstract: Positive bubble modification provides an alternative approach for DAF to enhance NOM removal.

Keywords： Bubble surface modification     Chitosan     Disinfection by-product     Dissolved air flotation     Organic fraction    

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The modification of titanium in mesoporous silica for Co-based Fischer–Tropsch catalysts

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1224-1236 doi: 10.1007/s11705-022-2139-1

Abstract: This study provides a promising method for support modification with incorporated-heteroatoms for the

Keywords： Fischer–Tropsch synthesis     titanium incorporation     mesoporous silica     metal-support interactions     C5+ selectivity    

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Fabrication, modification and environmental applications of TiO

S. ROHANI, T. ISIMJAN, A. MOHAMED, H. KAZEMIAN, M. SALEM, T. WANG

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 1,   Pages 112-122 doi: 10.1007/s11705-011-1144-6

Abstract: Among the semiconductors, titanium dioxide has been identified as an effective photocatalyst due to its abundance, low cost, stability, and superior electronic energy band structure. Highly ordered nanotube arrays of titania were produced by anodization and mild sonication. The band gap energy of the titania nanotube arrays was reduced to 2.6 eV by co-doping with Fe, C, N atoms using an electrolyte solution containing K Fe(CN) . The photoconversion of phenol in a batch photoreactor increased to more than 18% based on the initial concentration of phenol by using a composite nanomaterial consisting of titania nanotube arrays and Pt/ZIF-8 nanoparticles. A layer-by-layer assembly technique for the deposition of titania nanoparticles was developed to fabricate air filters for the degradation of trace amounts of toluene in the air and preparation of superhyrophobic surfaces for oil-water separation and anti-corrosion surfaces.

Keywords： TiO2 nanotube arrays and nanoparticles     anodization     bandgap modification     layer-by-layer deposition    

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Development of oncolytic virotherapy: from genetic modification to combination therapy

Qiaoshuai Lan, Shuai Xia, Qian Wang, Wei Xu, Haiyan Huang, Shibo Jiang, Lu Lu

Frontiers of Medicine 2020, Volume 14, Issue 2,   Pages 160-184 doi: 10.1007/s11684-020-0750-4

Abstract: In this work, we review the use of wild-type viruses in OVT and the strategies for OV genetic modification

Keywords： immunotherapy     oncolytic virus     genetic modification     immune checkpoint blockade     chimeric antigen receptor    

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Surface modification by ligand growth strategy for dense copper bismuth film as photocathode to enhance

Frontiers in Energy doi: 10.1007/s11708-023-0893-5

Abstract: This surface modification by ligand growth strategy will shed light on the future design of advanced

Keywords： copper bismuthate     photocathode     ligand growth strategy     dense film     PEC    

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Title Author Date Type Operation

Uncovering the effect of poly(ethylene-co-vinyl alcohol) molecular weight and vinyl alcohol content on morphology, antifouling, and permeation properties of polysulfone ultrafiltration membrane: thermodynamic and formation hydrodynamic behavior

Journal Article

Modeling of unconfined compressive strength of soil-RAP blend stabilized with Portland cement using multivariate

Ali Reza GHANIZADEH, Morteza RAHROVAN

Journal Article

Effects of pyrolyzed semi-char blend ratio on coal combustion and pollution emission in a 0.35 MW pulverized

Yonghong YAN, Liutao SUN, Zhengkang PENG, Hongliang QI, Li LIU, Rui SUN

Journal Article

Sustainable functionalization and modification of materials via multicomponent reactions in water

Journal Article

An investigation on modification mechanism of CH

Qiang XIN, Shanghong HUANG

Journal Article

Research progress on low dielectric constant modification of cellulose insulating paper for power transformers

Journal Article

Crystal modification of rifapentine using different solvents

Kun ZHOU, Jun LI, Jianhong LUO, Dongsheng ZHENG,

Journal Article

Surface modification techniques of membranes to improve their antifouling characteristics: recent advancements

Journal Article

RNA m6A modification and its function in diseases

Jiyu Tong, Richard A. Flavell, Hua-Bing Li

Journal Article

Hydrophilic modification of poly(aryl sulfone) membrane materials toward highly-efficient environmental

Journal Article

Feasibility of bubble surface modification for natural organic matter removal from river water using

Yulong Shi, Jiaxuan Yang, Jun Ma, Congwei Luo

Journal Article

The modification of titanium in mesoporous silica for Co-based Fischer–Tropsch catalysts

Journal Article

Fabrication, modification and environmental applications of TiO

S. ROHANI, T. ISIMJAN, A. MOHAMED, H. KAZEMIAN, M. SALEM, T. WANG

Journal Article

Development of oncolytic virotherapy: from genetic modification to combination therapy

Qiaoshuai Lan, Shuai Xia, Qian Wang, Wei Xu, Haiyan Huang, Shibo Jiang, Lu Lu

Journal Article

Surface modification by ligand growth strategy for dense copper bismuth film as photocathode to enhance

Journal Article