scholarly journals Design of a novel poly(aryl ether nitrile)-based composite ultrafiltration membrane with improved permeability and antifouling performance using zwitterionic modified nano-silica

RSC Advances ◽  
2021 ◽  
Vol 11 (25) ◽  
pp. 15231-15244
Author(s):  
Qi Wang ◽  
Fengna Dai ◽  
Shangying Zhang ◽  
Mengxia Wang ◽  
Chunhai Chen ◽  
...  
Keyword(s):  
Surface Modification ◽  
Phase Inversion ◽  
Ultrafiltration Membrane ◽  
Nanocomposite Membrane ◽  
Inorganic Filler ◽  
Inversion Method ◽  
Aryl Ether ◽  
Nano Silica ◽  
Phase Inversion Method ◽  
Precipitation Phase

Zwitterionic nano-silica (SiO2 NPs) obtained by lysine surface modification was used as a hydrophilic inorganic filler for preparing a poly(aryl ether nitrile) (PEN) nanocomposite membrane via an immersion precipitation phase inversion method.

Compatibility of Polyvinylidene Difluorid/Polyurethane and Preparation of Composite Tubular Membrane

2014 ◽  
Vol 936 ◽  
pp. 212-217
Author(s):  
Dan Ying Zuo ◽  
Hong Jun Li ◽  
Chang Hai Yi ◽  
Hou Lei Gan
Keyword(s):  
Phase Inversion ◽  
Water Flux ◽  
Mixing Enthalpy ◽  
Inversion Method ◽  
Membrane Porosity ◽  
Phase Inversion Method ◽  
Tubular Membranes ◽  
Parameter Theory ◽  
Precipitation Phase ◽  
Liquid Liquid Phase Separation

The compatibility of polyvinylidene difluorid (PVDF) and polyurethane (PU), the thermodynamics of the PVDF/PU/DMF (N-N-Dimethylformamide) membrane-forming systems were studied, and the composite tubular membranes of PVDF/PU-PET knitted fabric tube were prepared by the immersion precipitation phase inversion method. The results showed that the PVDF/PU system was partly compatible by the measurements of the solubility parameter theory, the mixing enthalpy, the viscosity. With PU content increasing, the gelation values increased and the instantaneous liquid-liquid phase separation was preferred to occur. The water flux of the composite tubular membranes were enhanced from 1264.81 to 2165.35 L/m2.h with PU content increasing from 10wt% to 40wt%, which resulted from the an increment of the membrane porosity and the improvement of the hydrophilicity.

Preparation of PEI Ultrafiltration Membrane with Excellent Thermal Resistance

2013 ◽  
Vol 787 ◽  
pp. 228-230 ◽  
Author(s):  
Run Lin Han
Keyword(s):  
Molecular Weight ◽  
Wastewater Treatment ◽  
Organic Solvent ◽  
Thermal Resistance ◽  
Phase Inversion ◽  
Ultrafiltration Membrane ◽  
Inversion Method ◽  
Low Molecular Weight ◽  
Membrane Material ◽  
Phase Inversion Method

Polyetherimide (PEI) with excellent solvent resistance and thermal resistance is a good membrane material which is studied in detail. PEI ultrafiltration membrane with low molecular weight cut-off is prepared by phase inversion method in this work. The membrane showed high resistance to PEG1000 which can be used in wastewater treatment with organic solvent.

Water purification performance enhancement of PVC ultrafiltration membrane modified with tourmaline particles

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Runze Guan ◽  
Weixing Yan ◽  
Jingjing Yuan ◽  
Xia Feng ◽  
Yiping Zhao
Keyword(s):  
Phase Inversion ◽  
Performance Enhancement ◽  
Water Flux ◽  
Ultrafiltration Membrane ◽  
Pvc Membrane ◽  
Inversion Method ◽  
Hybrid Membranes ◽  
Phase Inversion Method ◽  
Lower Contact

Abstract In this study, a novel PVC/tourmaline ultrafiltration membrane was fabricated by phase inversion method in order to improve anti-fouling performance and water quality. FESEM was used to examine the changes in the morphology of pure PVC and PVC/tourmaline hybrid membranes. The introduction of tourmaline resulted in the increase of porosity and mean pore size. EDX images indicated that tourmaline particles were homogeneously dispersed in the membranes when the amount were less than 1.0 wt%. The hybrid membranes exhibited lower contact angle (78.7°) and higher water flux (121.3 L/m2 h) than the pure PVC membrane. The anti-fouling performance of the membranes were studied by filtration of BSA solution. The results demonstrated that the hybrid membrane with 1.0 wt% tourmaline particles exhibited the best anti-fouling performance and the highest BSA rejection. In addition, the pH and conductivity of the filtered water were measured by pH meter and electrical conductivity meter. And the results showed that the quality of the filtered water was improved after treating through the hybrid membranes.

A straight, open and macro-porous fuel electrode-supported protonic ceramic electrochemical cell

2021 ◽  
Author(s):  
Yuxin Pan ◽  
Kai Pei ◽  
Yucun Zhou ◽  
Tong Liu ◽  
Meilin Liu ◽  
...  
Keyword(s):  
Phase Inversion ◽  
Electrochemical Cell ◽  
Inversion Method ◽  
Phase Inversion Method

A straight, open and macro-porous Ni–BaZr0.1Ce0.7Y0.1Yb0.1O3 fuel electrode-supported protonic ceramic electrochemical cell has been fabricated by a modified phase-inversion method.

A novel PVFM based membranes prepared via phase inversion method and its application in GPE

Polymer ◽  
2013 ◽  
Vol 54 (18) ◽  
pp. 4807-4813 ◽  
Author(s):  
Yan Ren ◽  
Fang Lian ◽  
Yan Wen ◽  
Hong-Yan Guan
Keyword(s):  
Phase Inversion ◽  
Inversion Method ◽  
Phase Inversion Method

scholarly journals Formulation, characterization and stability of o/w nanoemulsion containing rice bran oil prepared by emulsion phase inversion

Food Research ◽  
2020 ◽  
Vol 4 (4) ◽  
pp. 1025-1029
Author(s):  
Y.P. Sari ◽  
S. Raharjo ◽  
U. Santoso ◽  
Supriyadi
Keyword(s):  
Rice Bran ◽  
Phase Inversion ◽  
Rice Bran Oil ◽  
Coconut Oil ◽  
Tween 80 ◽  
Polydispersity Index ◽  
Inversion Method ◽  
Emulsion Phase ◽  
Naturally Occurring ◽  
Phase Inversion Method

Rice bran oil (RBO) contains naturally occurring antioxidants such as carotenoids, tocopherol, and γ-oryzanol. The aim of this research was to formulate and evaluate the characteristics of nanoemulsion which was prepared using RBO containing naturally occurring antioxidants. The RBO-in-water nanoemulsion was prepared by the emulsion phase inversion method. The oil phase of the nanoemulsion was prepared by either virgin coconut oil (VCO) or palm oil (PO) combined with RBO with the ratio of 5:5; 4:6, 3:7, 2:8 and 0:10. Tween 80 was used as a surfactant. The surfactant to oil ratios was predetermined at 2.5:1.0 and 3.0:1.0. The aqueous phase (80% w/w) was titrated into an organic phase that consisted of Tween 80 and oil phase (approximately 20% w/w). Droplet size, zeta-potential and polydispersity index of the nanoemulsion were used as the main parameters. The results showed that the smallest droplet (<100 nm) of the nanoemulsion was obtained when the ratio of VCO: RBO at 3:7 and the ratio of PO: RBO at 4:6 with the surfactant to oil ratio (SOR) was 2.5. Nanoemulsion with a relatively small polydispersity index of 0.3 was achieved when the ratio of PO: RBO was 3:7 and SOR at 3. All of the freshly prepared RBO containing nanoemulsion have good stability with zetapotential values of < -30 mV. Nanoemulsions were stable against centrifugation at 2300 rpm for 15 mins, but they were not stable against heating at 105°C for 5 hrs. The RBO-inwater nanoemulsion could be successfully prepared by phase inversion method, by combining RBO with either VCO or PO at different ratios.

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