Molecular filters based on cyclodextrin functionalized electrospun fibers

Date

2009-04-15

Author

Uyar, Tamer
Havelund, Rasmus
Nur, Yusuf
Hacaloğlu, Jale
Besenbacher, Flemming
Kingshott, Peter

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

49
views

0
downloads

Beta-cyclodextrin (beta-CD) was successfully incorporated into polystyrene (PS) fibers by electrospinning technique. The subsequent fibrous membranes show potential for efficient removal of organic compound (e.g.: phenolphthalein) from solution by the formation of inclusion complexes with the beta-CD molecules. Since the filtration efficiency of the fiber membranes is highly dependent on the presence and distribution of beta-CD at the surface of the individual fibers, highly sensitive and specific surface spectroscopic analyses were carried out. X-ray photoelectron spectroscopy (XPS) was used to quantify the amount of beta-CD on the surface of PS fibers. Time-of-flight secondary ion mass spectrometry (ToF-SIMS) showed the presence of both beta-CD molecular and fragment ions on the fiber surfaces, and high resolution chemical imaging demonstrated even distribution of beta-CD on the surface of the individual fibers. Phenolphthalein (PhP) was used as a model compound in the filtration studies, and a strong dependence was observed between beta-CD content of the PS/CD fibers and efficiency of trapping PhP. These results demonstrate the potential of using PS/CD fibrous membranes to filter organic molecules in purification/separation processes.

Subject Keywords

Cyclodextrin, Electrospinning, Nanofiber, Polystyrene, Nanofilter

URI

https://hdl.handle.net/11511/31399

Journal

Journal of Membrane Science

DOI

https://doi.org/10.1016/j.memsci.2009.01.047

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Cyclodextrin functionalized poly(methyl methacrylate) (PMMA) electrospun nanofibers for organic vapors waste treatment Uyar, Tamer; Havelund, Rasmus; Nur, Yusuf; Balan, Abidin; Hacaloğlu, Jale; Toppare, Levent Kamil; Besenbacher, Flemming; Kingshott, Peter (2010-12-01) Poly(methyl methacrylate) (PMMA) nanofibers containing the inclusion complex forming betacyclodextrin (-CD) were successfully produced by means of electrospinning in order to develop functional nanofibrous webs for organic vapor waste treatment. Electrospinning of uniform PMMA nanofibers containing different loadings of -CD (10%, 25% and 50% (w/w)) was achieved. The surface sensitive spectroscopic techniques; X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS...
Processing by electrospinning method and characterization of poly(lactic acid) and poly(lactic acid)-based composite nanofibers Aşcı, Emine Ümran; Bayram, Göknur; Department of Chemical Engineering (2022-6) Electrospinning method is a versatile, cost-effective and viable technique to produce nanofibers with high ratios of surface area to the volume. The ability to obtain characteristics of the nanofibers via electrospinning, i.e., small pore size, high porosity and surface area/volume ratio, are some of the significant reasons why this method has eventually become a widespread technique for developing continuous and long fibers with nanometer-scale diameters. Furthermore, these advantages enable the produced n...
Electrospinning of chitosan/poly(lactic acid-co-glycolic acid)/hydroxyapatite composite nanofibrous mats for tissue engineering applications Endoğan Tanır, Tuğba; Hasırcı, Vasıf Nejat; Hasırcı, Nesrin (2014-11-01) Electrospinning, which is a fiber fabrication technique using electrical forces to produce fibers with diameters ranging from nanometers to several micrometers, can be used to prepare materials mimicking the extracellular matrix proteins for potential use as tissue engineering scaffolds. In this study, nanofibrous mats of chitosan (CH) and poly(lactic acid-co-glycolic acid) (PLGA) having fiber diameters between 167 to 525 nm, and containing hydroxyapatite (HAp), were prepared by electrospinning technique. M...
Thermal degradation of polystyrene composites. Part II. The effect of nanoclay KAYA, Hatice; Kaynak, Cevdet; Hacaloğlu, Jale (2016-07-01) In this work, thermal degradation behavior polystyrene/organoclay nanocomposites containing tribromophenol end-capped brominated epoxy oligomer, (BE) with or without Sb2O3 were investigated systematically via direct pyrolysis mass spectrometry. Incorporation of organically modified montmorillonite into polystyrene, (PS) matrix not only increased thermal stability but also the probability of radical recombination, disproportionation and carbonization reactions causing increase in the char yield. Exfoliation ...
Nano patterning of AISI 316L stainless steel with Nonlinear Laser Lithography: Sliding under dry and oil-lubricated conditions Gnilitskyi, Iaroslav; Rotundo, Fabio; Martini, Carla; Pavlov, Ihor; Ilday, Serim; Vovk, Evgeny; Ilday, Fatih Omer; Orazi, Leonardo (2016-07-01) Femtosecond laser-based Nonlinear Laser Lithography (NLL) was applied to AISI 316L stainless steel, which requires surface modification to achieve satisfactory tribological behaviour. NLL advances over the well-known Laser Induced Periodic Surface Structures (LIPSS) in terms of uniformity and long-range order of high speeds, over large areas. A galvanometric scanner head was used for an high production rate. Dry and lubricated sliding tests, considering different orientations of the nanotexture showed that ...

Citation Formats

T. Uyar, R. Havelund, Y. Nur, J. Hacaloğlu, F. Besenbacher, and P. Kingshott, “Molecular filters based on cyclodextrin functionalized electrospun fibers,” Journal of Membrane Science, pp. 129–137, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31399.