Hemodialysis Membrane Prepared from Bacterial Cellulose/Lithium Chloride/N,N-Dimethylacetamide Solution

2014 ◽  
Vol 1048 ◽  
pp. 395-399 ◽  
Author(s):  
Jia Zhi Yang ◽  
Guang Mei Liu ◽  
Dong Ping Sun
Keyword(s):  
Tensile Strength ◽  
Bacterial Cellulose ◽  
Phase Inversion ◽  
Inversion Method ◽  
Regenerated Cellulose ◽  
Vitamin B ◽  
Cellulose Membrane ◽  
Cellulose Membranes ◽  
Phase Inversion Method ◽  
Percentage Porosity

A new bacterial cellulose regenerated cellulose membrane (RBC) has been prepared by phase inversion method in LiCl/DMAC solution. The effects of coagulation concentrations on the physical properties of the RBC membranes were studied and optimized. Features of the RBC of membranes obtained using 0%~40% N,N-Dimethylacetamide (DMAC), such as water absorption percentage, porosity (Pr), ultrafilter rate (UFR), and tensile strength were investigated. The RBC membranes prepared with 40% DMAC solution as coagulant exhibit a smooth surface and a high tensile strength with suitable UFR. RBC showed improved permeabilities for urea and vitamin B12when compared with commercial cellulose membranes.

scholarly journals Preparation and properties of cellulose membranes with graphene oxide addition

2017 ◽  
Vol 19 (4) ◽  
pp. 41-49 ◽  
Author(s):  
Beata Fryczkowska ◽  
Kamil Wiechniak
Keyword(s):  
Graphene Oxide ◽  
Phase Inversion ◽  
Chemical Properties ◽  
Composite Membranes ◽  
Inversion Method ◽  
Permeate Flux ◽  
Oxide Addition ◽  
Physico Chemical ◽  
Cellulose Membranes ◽  
Phase Inversion Method

Abstract The paper presents results of research on the preparation of cellulose membranes with graphite oxide addition (GO/CEL). Initially, a cellulose (CEL) solution in 1-ethyl-3-methylimidazole acetate (EMIMAc) was obtained, to which graphene oxide (GO) dispersed in N,N-dimethylformamide (DMF) was added. From this solution, composite membranes were formed using phase inversion method. It was observed that the GO addition influences the physico-chemical properties of GO/CEL composite membranes, resulting in an increase in their mass per unit area, thickness and density, and a decrease in sorption properties. In addition, the study of transport properties has shown that GO/CEL membranes do not absorb BSA particles on their surface, which prevents the unfavorable phenomenon of fouling. An important feature of the obtained membranes is the specific permeate flux which reaches high values (~124 L/m2×h) at 3.8% of the GO addition to the cellulose matrix.

scholarly journals Pengaruh Penambahan Epiklorohidrin Terhadap Sifat Mekanik dan Daya Serap Film Khitosan Sebagai Adsorben

2017 ◽  
Vol 12 (1) ◽  
pp. 31
Author(s):  
Nisfayati Juir ◽  
Rahmi Rahmi ◽  
Marlina Marlina
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Tensile Test ◽  
Phase Inversion ◽  
Crosslinking Agent ◽  
Chitosan Film ◽  
Inversion Method ◽  
Test Results ◽  
Crosslinked Chitosan ◽  
Phase Inversion Method

Pembuatan film khitosan berikatan silang epiklorohidrin telah dilakukan dengan metode inversi fasa. Pada penelitian ini khitosan dimodifikasi dengan epiklorohidrin untuk memperbaiki sifat mekanik dan ketahanannya terhadap asam. Film khitosan hasil modifikasi diuji sifat mekaniknya dengan alat uji tarik dan daya serapnya diuji terhadap ion Cd2+. Hasil uji tarik menunjukkan bahwa dengan adanya pembentuk ikat silang epiklorohidrin  pada khitosan dapat meningkatkan tensile strength film khitosan dan optimum pada komposisi 54,128 % b/b. Hasil uji adsorpsi terhadap ion Cd2+ menunjukkan bahwa penambahan epiklorohidrin dapat meningkatkan kapasitas penyerapan ion Cd2+ sebesar 31,33 %  dibandingkan dengan film khitosan tanpa silang.  Preparation of epichlorohydrin crosslinked  chitosan film has been done by phase inversion method. In this study, chitosan was modified with epichlorohydrin by the purpose of improving its  mechanical properties and adsorption capasity. Mechanical properties of crosslinked chitosan film was examined by tensile test. Adsorption study was done for Cd2+ ions removal. Tensile test results showed  epichlorohydrin as crosslinking agent of chitosan can improve tensile strength and optimum at 54.128 % w/w of composition. The adsorption results for Cd2+ ions showed the addition of epichlorohydrin in chitosan can increase the adsorption capacity of Cd2+ ions 31,33 % compared with non-crosslinked chitosan films.

scholarly journals Preparation and Characterization of Regenerated Cellulose Membrane Blended with ZrO2 Nanoparticles

Membranes ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 42
Author(s):  
Xin Huang ◽  
Feng Tian ◽  
Guohong Chen ◽  
Fanan Wang ◽  
Rengui Weng ◽  
...  
Keyword(s):  
Rejection Rate ◽  
Zro2 Nanoparticles ◽  
Inversion Method ◽  
Regenerated Cellulose ◽  
Cellulose Membrane ◽  
Gravimetric Analysis ◽  
Green Materials ◽  
Membrane Flux ◽  
Separation Membrane ◽  
Phase Inversion Method

It is of great significance to search for efficient, renewable, biodegradable and economical membrane materials. Herein, we developed an organic-inorganic hybrid regenerated cellulose membrane (ZrO2/BCM) with excellent hydrophilic and anti-fouling properties. The membrane was prepared by introducing ZrO2 particles into an N-Methylmorpholine-N-oxide(NMMO)/bamboo cellulose(BC) solution system by the phase inversion method. The physi-chemical structure of the membranes were characterized based on thermal gravimetric analysis (TGA), Fourier transform infrared spectroscopy (ATR-FTIR), field emission scanning electron microscopy (FE-SEM), and X-ray diffraction (XRD). The modified regenerated cellulose membrane has the excellent rejection of bovine serum albumin (BSA) and anti-fouling performance. The membrane flux of ZrO2/BCM is 321.49 (L/m2·h), and the rejection rate of BSA is 91.2%. Moreover, the membrane flux recovery rate after cleaning with deionized water was 90.6%. This new type of separation membrane prepared with green materials holds broad application potential in water purification and wastewater treatment.

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.

scholarly journals Chitosan succinate/PVA-PEG Membrane: Preparation, Characterization and Permeation Ability Test on Creatinine

2018 ◽  
Vol 21 (2) ◽  
pp. 80-84 ◽  
Author(s):  
Retno Ariadi Lusiana ◽  
Vivi Dia Ahmad Sangkota ◽  
Sri Juari Santosa
Keyword(s):  
Tensile Strength ◽  
Water Absorption ◽  
Poly Vinyl Alcohol ◽  
Inversion Method ◽  
Ability Test ◽  
Chitosan Membrane ◽  
Water Absorption Test ◽  
Poly Ethylene ◽  
Membrane Strain ◽  
Phase Inversion Method

Evaluation character of chitosan membrane-succinate / poly vinyl alcohol-poly ethylene glycol (PVA-PEG) were prepared in acetic acid solvent through a phase inversion method has been performed. The study began with the preparation of crosslinked chitosan compounds with succinic acid, followed by preparation into membrane by combining PVA-PEG. Character analysis of the resulting material using FTIR, EDX, TGA, water absorption test, tensile strength, membrane hydrophilicity. The ability of membrane permeation was tested against creatinine. The results showed that the succinate had reacted with chitosan. Chitosan modification through cross link and polymer alloys increases tensile strength and membrane strain of 1.7-2.5 x of pure chitosan membrane. In addition, the modified membrane also has higher water absorption and hydrophilicity values than the unmodified membrane, and this implies the ability of membrane-induced creatinine permeation. Permeable permeation values were 13.8% in chitosan, 24.84% on chitosan-succinate and 25% in chitosan-succinate / PVA-PEG. Chitosan-succinate membranes have the ability to use more than 4x repeated use.

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
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