Solvent and pH resistance of surface crosslinked chitosan/poly(acrylonitrile) composite nanofiltration membranes

Musale, Deepak A.; Kumar, Ashwani

doi:10.1002/1097-4628(20000822)77:8<1782::aid-app15>3.0.co;2-5

Cited by 89 publications

(27 citation statements)

References 15 publications

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“…Firstly, PAN membranes have been widely used in aqueous ltra-tion applications. 31,32 Secondly, PAN is a well-known carbon ber precursor due its easy conversion into carbon bers, its high carbon yields and its cost effective processing. 33,34 In this regard, we prepared PAN nanober mats with different loading ratios of crown ether.…”

Section: -30mentioning

confidence: 99%

Polyacrylonitrile (PAN)/crown ether composite nanofibers for the selective adsorption of cations

et al. 2016

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In this study, we prepared electrospun polyacrylonitrile (PAN) nanofibers functionalized with dibenzo-18-crown-6 (DB18C6) crown ether and showed the potential of these fibers for the selective recovery of K + from other both mono-and divalent ions in aqueous solutions. Nanofibers were characterized by SEM, FTIR and TGA. SEM results showed that the crown ether addition resulted in thicker nanofibers and higher mean fiber diameters, in a range of 138 to 270 nm. Batch adsorption experiments were conducted in order to evaluate the potential of the crown ether modified nanofibers as an adsorbent for ion removal. The maximum adsorption capacity of the crown ether modified nanofibers for K + was 0.37 mmol g À1 and the nanofibers followed the selectivity sequence of K

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Section: -30mentioning

confidence: 99%

Polyacrylonitrile (PAN)/crown ether composite nanofibers for the selective adsorption of cations

et al. 2016

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“…As shown in Figure , the WCA decreased evidently from nearly 75° for M‐0 to 57° for M‐ILHNTs‐3.0. The enhancement of membrane hydrophilicity could be explained by the migration of ILHNTs to membrane surface in phase inversion process, which would affect the separation and antifouling performance of membranes.…”

Section: Resultsmentioning

confidence: 99%

“…Membrane resistance assay was performed to evaluate the long‐term stability of hybrid membranes by the following steps according to some previous literatures . First, PWP and WCA of membranes were measured.…”

Section: Methodsmentioning

confidence: 99%

Improvement in antifouling and separation performance of PVDF hybrid membrane by incorporation of room‐temperature ionic liquids grafted halloysite nanotubes for oil–water separation

Zhang

Shu

Yang

et al. 2018

J of Applied Polymer Sci

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Novel hybrid poly(vinylidene fluoride) ultrafiltration membranes were fabricated via immersion precipitation method through the incorporation of the halloysite nanotubes functionalized with 1-methyl-3-(3-triethoxysilypropyl) imidazolium chloride. The modified halloysite nanotubes were confirmed by Fourier transform infrared spectrometer, thermogravimetric analysis, and transmission electron microscopy. The morphologies of hybrid membranes were characterized by atomic force microscopy and energy dispersive spectrometer, while the filtration and antifouling performance were investigated by means of porosity, mean pore radius, pure water permeability, rejection ratio, and flux recovery ratio. The addition of the modified halloysite nanotubes obviously improved the membrane hydrophilicity. Besides, the flux recovery ratios were as high as 96% for humic acid and 94% for bovine serum albumin after two filtration cycles. Finally, the modified membranes were used to separate diesel oil-water emulsions. The rejection ratio and flux recovery ratio were as high as 99% and 94%, respectively. The poly(vinylidene fluoride) membranes incorporated by the novel halloysite nanotubes provided a promising alternative for oil-water emulsions separation.

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“…Carbon nanofibers possess excellent thermal and electrical properties; have wide range of applications, such as structural components, wound dressing, and reinforcement in composites, filtration membranes, textiles, electronics, and lithium ions batteries . The most promising technique for the synthesis of carbon nanofiber is electrospinning where polyacrylonitrile (PAN) can be used for the main carbon sources of polymeric precursor .…”

Section: Introductionmentioning

confidence: 99%

Carbonized electrospun polyacrylonitrile nanofibers as highly sensitive sensors in structural health monitoring of composite structures

Alarifi¹,

Alharbi²,

Khan

et al. 2015

J of Applied Polymer Sci

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Electrospun polyacrylonitrile (PAN) nanofibers were stabilized at 2808C for 1 h in an ambient condition, and then carbonized at 8508C in inert argon gas for additional 1 h in order to fabricate highly pure carbonous nanofibers for the development of highly sensitive sensors in structural health monitoring (SHM) of composite aircraft and wind turbines. This study manifests the real-time strain response of the carbonized PAN nanofibers under various tensile loadings. The prepared carbon nanofibers were placed on top of the carbon fiber pre-preg composite as a single layer. Using a hand lay-up method, and then co-cured with the prepreg composites in a vacuum oven following the curing cycle of the composite. The electric wires were connected to the top surface of the composite panels where the cohesively bonded conductive nanofibers were placed prior to the tensile and compression loadings in the grips of the tensile unit. The test results clearly showed that the carbonized electrospun PAN nanofibers on the carbon fiber composites were remarkably performed well. Even the small strain rates (e.g., 0.020% strain) on the composite panels were easily detected through voltage and resistance changes of the panels. The change in voltage can be mainly attributed to the breakage/ deformation of the conductive network of the carbonized PAN nanofibers under the loadings. The primary goal of the present study is to develop a cost-effective, lightweight, and flexible strain sensor for the SHM of composite aircraft and wind turbines. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43235.

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Solvent and pH resistance of surface crosslinked chitosan/poly(acrylonitrile) composite nanofiltration membranes

Cited by 89 publications

References 15 publications

Polyacrylonitrile (PAN)/crown ether composite nanofibers for the selective adsorption of cations

Polyacrylonitrile (PAN)/crown ether composite nanofibers for the selective adsorption of cations

Improvement in antifouling and separation performance of PVDF hybrid membrane by incorporation of room‐temperature ionic liquids grafted halloysite nanotubes for oil–water separation

Carbonized electrospun polyacrylonitrile nanofibers as highly sensitive sensors in structural health monitoring of composite structures

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