Polyacrylonitrile/starch semi-biodegradable blend membrane: preparation, morphology and performance

This study describes the preparation, characterization, and evaluation of performance of blend Polyethersulfone (PES) with manganese(III) acetylacetonate Mn(acac)3to produce reverse osmosis blend membrane. The manganese(III) acetylacetonate nanoparticles were prepared by a simple and environmentally benign route based on hydrolysis of KMnO4followed by reaction with acetylacetone in rapid stirring rate. The prepared nanoparticle powder was dissolved in polymer solution mixture to produce RO PES/Mn(acac)3blend membrane, without any treatment of Polyethersulfone membrane surface. The membrane morphology, mechanical properties, and performance were presented. The scanning electron microscopy (SEM) images have displayed a typical asymmetric membrane structure with a dense top layer due to the migration of Mn(acac)3nanoparticles to membrane surface during the phase inversion process. Contact angle measurements have indicated that the hydrophilicity of the membrane was improved by adding Mn(acac)3. AFM images have proved excellent pores size distribution of blend membrane and lower surface roughness compared with bare PES. The desalination test was applied to blend membrane, where the blend membrane provided good performance; particularly, permeate flux was 24.2 Kg/m2·h and salt rejection was 99.5%.

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Ceramic monolith as microfiltration membrane: Preparation, characterization and performance evaluation

Applied Clay Science ◽

10.1016/j.clay.2018.05.021 ◽

2018 ◽

Vol 161 ◽

pp. 456-463 ◽

Cited By ~ 17

Author(s):

Mehran Arzani ◽

Hamid Reza Mahdavi ◽

Mohammad Sheikhi ◽

Toraj Mohammadi ◽

Omid Bakhtiari

Keyword(s):

Performance Evaluation ◽

Membrane Preparation ◽

Microfiltration Membrane ◽

And Performance

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Preparation and characterization of anti-fouling PVDF membrane modified by chitin

Journal of Polymer Engineering ◽

10.1515/polyeng-2015-0532 ◽

2017 ◽

Vol 37 (3) ◽

pp. 313-321 ◽

Cited By ~ 2

Author(s):

Manman Xie ◽

Xia Feng ◽

Juncheng Hu ◽

Zhengyi Liu ◽

Zijian Wang ◽

...

Keyword(s):

Vinylidene Fluoride ◽

Membrane Surface ◽

Solvent System ◽

Pvdf Membrane ◽

Blend Membrane ◽

Poly Vinylidene Fluoride ◽

And Performance ◽

Membrane Structure And Performance ◽

Precipitation Phase

Abstract Poly(vinylidene fluoride) (PVDF)/chitin (CH) blend membranes were prepared via the method of immersion-precipitation phase transformation with the solvent system N,N-dimethylacetamide (DMAc)/lithium chloride (LiCl) as solvent and water as coagulant. The effect of CH on membrane structure and performance was investigated. Owing to the strong hydrophilicity, CH chains enriched on the blend membrane surface and improved the hydrophilicity of the membrane. The addition of CH also led to the formation of finger-like pores and the increase of pore size and porosity. The flux and the flux recovery ratio (FRR) of the blend membrane were higher than that of pure PVDF membrane. The fouling resistance of the blend membrane was lower than that of PVDF original membrane. In a word, the addition of CH to PVDF membrane improved the hydrophilicity and the anti-fouling ability of PVDF membrane.

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