Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Functional electrospun polystyrene nanofibers incorporating α-, β-, and γ-cyclodextrins: Comparison of molecular filter performance
Download
index.pdf
Date
2010-09-28
Author
Uyar, Tamer
Havelund, Rasmus
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
Cite This
Electrospinning has been used to successfully create polystyrene (PS) nanofibers containing either of three different types of cyclodextrin (CD); -CD, -CD, and -CD. These three CDs are chosen because they have different sized cavities that potentially allow for selective inclusion complex (IC) formation with molecules of different size or differences in affinity of IC formation with one type of molecule. The CD containing electrospun PS nanofibers (PS/CD) were initially characterized by scanning electron microscopy (SEM) to determine the uniformity of the fibers and their fiber diameter distributions. X-ray photoelectron spectroscopy (XPS) was used to quantitatively determine the concentration of each CD on the different fiber surfaces. Static time-of-flight secondary ion mass spectrometry (static-ToF-SIMS) showed the presence of each type of CD on the PS nanofibers by the detection of both the CD sodium adduct molecular ions (M Na ) and lower molecular weight oxygen containing fragment ions. The comparative efficiency of the PS/CD nanofibers/nanoweb for removing phenolphthalein, a model organic compound, from solution was determined by UV vis spectrometry, and the kinetics of phenolphthalein capture was shown to follow the trend PS/ -CD > PS/-CD > PS/-CD. Direct pyrolysis mass spectrometry (DP-MS) was also performed to ascertain the relative binding strengths of the phenolphthalein for the CD cavities, and the results showed the trend in the interaction strength was -CD > -CD > -CD. Our results demonstrate that nanofibers produced by electrospinning that incorporate cyclodextrins with different sized cavities can indeed filter organic molecules and can potentially be used for filtration, purification, and/or separation processes.
Subject Keywords
cyclodextrin
,
electrospinning
,
polystyrene
,
nanofiber
,
molecular filter
,
nanoweb
URI
https://hdl.handle.net/11511/32075
Journal
ACS Nano
DOI
https://doi.org/10.1021/nn100954z
Collections
Graduate School of Natural and Applied Sciences, Article
Suggestions
OpenMETU
Core
Molecular filters based on cyclodextrin functionalized electrospun fibers
Uyar, Tamer; Havelund, Rasmus; Nur, Yusuf; Hacaloğlu, Jale; Besenbacher, Flemming; Kingshott, Peter (2009-04-15)
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 s...
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...
Characterization of pea flour based nanofibers produced by electrospinning method
Oğuz, Seren; Şahin, Serpil; Şümnü, Servet Gülüm; Department of Food Engineering (2018)
Electrospinning is a process that produces continuous nanofibers through the action of an electric field imposed on a polymer solution. In this thesis, it was aimed to produce pea flour and hydroxypropyl methylcellulose (HPMC) based homogenous nanofibers by electrospinning. The effects of pH, pea flour and HPMC concentration, and microfluidization on apparent viscosity, electrical conductivity of solutions and nanofiber characteristics were studied. In addition, the effects of voltage and flow rate were ana...
Finite element analysis and experimental study of dovetail attachments
Akay, Ahmet Arda; Gürses, Ercan; Department of Aerospace Engineering (2016)
Dovetail-rim attachment is a critical component of an aeroengine compressor disc. Fretting fatigue is commonly seen in these attachments, which results to premature failures such as cracking or wear. Main cause of the fretting fatigue is high stress gradients occuring near the edges of contact. Since the problem involves contact, the effect of the certain contact parameters on the stress gradients is investigated. These contact stresses are non-singular and can converge to a value with successive mesh refin...
Electrospun polystyrene fibers containing high temperature stable volatile fragrance/flavor facilitated by cyclodextrin inclusion complexes
Uyar, Tamer; Hacaloğlu, Jale; Besenbacher, Flemming (2009-03-01)
In this study, we report on electrospinning of functional polystyrene (PS) fibers containing cyclodextrin-menthol inclusion complexes (CD-menthol-ICs). Our goal is to develop functional electrospun fibers containing fragrances/flavors with enhanced durability and stability assisted by cyclodextrin inclusion complexation. We have used menthol as a model fragrance/flavor material and CD-menthol-ICs were incorporated in electrospun PS fiber by using three types of CDs: alpha-CD, beta-CD and gamma-CD. Due to co...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
T. Uyar, R. Havelund, J. Hacaloğlu, F. Besenbacher, and P. Kingshott, “Functional electrospun polystyrene nanofibers incorporating α-, β-, and γ-cyclodextrins: Comparison of molecular filter performance,”
ACS Nano
, pp. 5121–5130, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32075.