Polyurethane and carboxylated polysulfone blend ultrafiltration membranes. I. Preparation and characterization

Latha, C. S.; Shanthanalakshmi, D.; Mohan, D.; Balu, K.; Kumarasamy, Murali

doi:10.1002/app.21831

Cited by 12 publications

(8 citation statements)

References 43 publications

(37 reference statements)

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“…These functional polysulfones can further facilitate various applications. For example, carboxylated polysulfone was blended with either polyurethane or cellulose acetate for ultrafiltration membrane application …”

Section: Chemical Functionalizationmentioning

confidence: 99%

Recent advances in the preparation of functionalized polysulfones

Dizman

Taşdelen

Yaǧcı

2013

Polymer International

125

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Section: Chemical Functionalizationmentioning

confidence: 99%

Recent advances in the preparation of functionalized polysulfones

Dizman

Taşdelen

Yaǧcı

2013

Polymer International

125

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“…The work of Malaisamy et al 27 suggested that an increased sulfonated polysulfone (SPSF) concentration in the PU/SPSF blend enhanced the membrane pore size and MWCO. Latha et al 28 indicated that the pore size increased with an increase in the concentration of carboxylated polysulfone (CPSF) in a CPSF/PU blend and the role of polyethylene glycol (PEG) 600 was crucial in alternating the structural characteristics of the blend membranes. Latha et al 28 indicated that the pore size increased with an increase in the concentration of carboxylated polysulfone (CPSF) in a CPSF/PU blend and the role of polyethylene glycol (PEG) 600 was crucial in alternating the structural characteristics of the blend membranes.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization and antifouling properties of polyacrylonitrile/polyurethane blend membranes for water purification

Panda

2015

RSC Adv.

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Casting of flat sheet polyacrylonitrile (PAN)/polyurethane (PU) blend membranes was reported for the first time in this work. PU makes the membrane more porous. Ternary phase diagram indicates that the addition of PU increases the thermodynamic instability of the blend. The average pore size of the membrane increased from 11 nm to 18 nm for pure PAN and the PAN/PU blend membranes. The membranes were characterized in terms of permeability, porosity, molecular weight cut-off (MWCO), contact angle, mechanical strength, scanning electron microscope (SEM), atomic force microscope (AFM), differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR). The AFM images indicated that the surface roughness of the membrane increased with an increase in the concentration of PU. Addition of PU also imparted hydrophilicity to the membranes. FTIR and DSC measurements confirm the polymer compatibility of the PAN/PU blend. The PAN/PU blend 70/30 membrane exhibited the maximum antifouling characteristics with a 99% flux recovery ratio associated with the complete removal of turbidities and organic matter.

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“…Membranes were prepared following the phase inversion procedure reported in the literature [ 20 , 21 , 22 ]. A 20% wt polymer or nanocomposite solution using N,N -dimethylformamide was prepared.…”

Section: Methodsmentioning

confidence: 99%

High-Performance Polyurethane Nanocomposite Membranes Containing Cellulose Nanocrystals for Protein Separation

et al. 2022

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With the aim of exploring new materials and properties, we report the synthesis of a thermoplastic chain extended polyurethane membrane, with superior strength and toughness, obtained by incorporating two different concentrations of reactive cellulose nanocrystals (CNC) for potential use in kidney dialysis. Membrane nanocomposites were prepared by the phase inversion method and their structure and properties were determined. These materials were prepared from a polyurethane (PU) yielded from poly(1,4 butylene adipate) as a soft segment diol, isophorone diisocyanate (IPDI) and hexamethylenediamine (HMDA) as isocyanate and chain extender, respectively (hard segment), filled with 1 or 2% w/w CNC. Membrane preparation was made by the phase inversion method using N,N-dimethylformamide as solvent and water as nonsolvent, and subjected to dead-end microfiltration. Membranes were evaluated by their pure water flux, water content, hydraulic resistance and protein rejection. Polymers and nanocomposites were characterized by scanning electronic and optical microscopy, differential scanning calorimetry, infrared spectroscopy, strain stress testing and 13C solid state nuclear magnetic resonance. The most remarkable effects observed by the addition of CNCs are (i) a substantial increment in Young’s modulus to twenty-two times compared with the neat PU and (ii) a marked increase in pure water flux up to sixty times, for sample containing 1% (w/w) of CNC. We found that nanofiller has a strong affinity to soft segment diol, which crystallizes in the presence of CNCs, developing both superior mechanical and pure water flow properties, compared to neat PU. The presence of nanofiller also modifies PU intermolecular interactions and consequently the nature of membrane pores.

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Polyurethane and carboxylated polysulfone blend ultrafiltration membranes. I. Preparation and characterization

Cited by 12 publications

References 43 publications

Recent advances in the preparation of functionalized polysulfones

Recent advances in the preparation of functionalized polysulfones

Preparation, characterization and antifouling properties of polyacrylonitrile/polyurethane blend membranes for water purification

High-Performance Polyurethane Nanocomposite Membranes Containing Cellulose Nanocrystals for Protein Separation

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