Modification of surface properties of electrospun polyamide nanofibers by means of a perfluorinated acridine

Bianco, Andrea; Iardino, Giacomo; Bertarelli, Chiara; Miozzo, Luciano; Papagni, Antonio; Zerbi, G.

doi:10.1016/j.apsusc.2007.04.003

Cited by 33 publications

(20 citation statements)

References 28 publications

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“…Although a small number of previous studies have shown that low molecular weight fluorinated additives do successfully migrate to the surface during the electrospinning process 29,30 , to the best of our knowledge this is the first report of low surface energy polymeric additives being used for this purpose. We have recently shown [15][16][17][18][19]34 that polymeric fluoroalkyl additives with molecular weights as high as 40,000 gmol -1 are able to successfully surface segregate in thin films, although somewhat unsurprisingly, lower molecular additives and additives with a higher fluorine contact are more effective at generating significant changes in surface properties.…”

Section: Contact Angle Measurements Of Fibres Spun From Thfmentioning

confidence: 98%

“…Durability of properties at a modified surface is an inevitable concern since this potentially places limitations on the range of applications and product lifetime and whilst the work of Long 29,30 and Bianco 28 showed unequivocally that spontaneous surface segregation of low surface energy additives can be achieved during the electrospinning process, the use of such low molecular weight additives is unlikely to result in a long term, durable, fluorinated surface layer -such small molecules are susceptible to surface erosion through environmental wear and tear. Clearly the strength of the interaction between the modified surface and the bulk material is of critical importance to its durability and the use of a polymeric additive, capable of chain entanglement with the bulk sub-phase is expected to enhance durability and this effect is the subject of ongoing studies.…”

Section: Introductionmentioning

confidence: 99%

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Electrospinning Superhydrophobic Fibers Using Surface Segregating End-Functionalized Polymer Additives

et al. 2011

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. (2011) 'Electrospinning superhydrophobic bers using surface segregating end-functionalized polymer additives. ', Macromolecules., 44 (16). pp. 6461-6470. Further information on publisher's website:http://dx.doi.org/10.1021/ma200852zPublisher's copyright statement:This document is the Accepted Manuscript version of a Published Work that appeared in nal form in Macromolecules, copyright c 2011 American Chemical Society after peer review and technical editing by the publisher. To access the nal edited and published work see http://dx.doi.org/10.1021/ma200852z. Additional information:Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. RECEIVED DATE (to be automatically inserted after your manuscript is accepted if requiredaccording to the journal that you are submitting your paper to) † Chemistry Department, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.ABSTRACT: We describe here a facile route for the in situ modification of the surface properties of fibres produced by electrospinning polystyrene containing small quantities of compatible polymer additives, end functionalized with 1-3 fluoroalkyl groups. Such additives undergo spontaneous surface segregation during the electrospinning process resulting in fibres with low surface energy, fluorine rich, superhydrophobic surfaces. Surface properties were analyzed using static contact angle measurements (with water as the contact fluid) and X-ray photoelectron spectroscopy. We report the effect of a number of parameters on the surface properties of the resulting polystyrene fibres including the molecular weight and concentration of functionalized additive, the number of fluoroalkyl groups, the effect of annealing and spinning solvent. The majority of the fibres were successfully produced using THF as the spinning 2 solvent and fibres with a contact angle of approximately 150 degrees were attainable. However, preliminary investigations using a blend of polystyrene and 4% by weight of such an additive, endfunctionalized with 3 C 8 F 17 group in a mixed solvent of DMF/THF (3:1 v/v) resulted in a mat of fibres with a superhydrophobic surface and a contact angle of 158 degrees.

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Section: Contact Angle Measurements Of Fibres Spun From Thfmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Electrospinning Superhydrophobic Fibers Using Surface Segregating End-Functionalized Polymer Additives

et al. 2011

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“…In this process, a continuous strand of a liquid polymer is drawn through a spinneret by a high electrostatic force to be deposited randomly as a mat on a grounded collector. These electrospun fibers possess a smaller inter‐fibrous pore size and higher surface area to volume ratio than those of the bulk materials 9–12. Because of these interesting morphological features, this cutting‐edge technology has led to intensive research in the nano‐scale.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of electrospun ultrafine polyamide‐6 nanofibers

Nirmala

Navamathavan

El‐Newehy

et al. 2011

Polymer International

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We report on the preparation and characterization of ultrafine polyamide‐6 nanofibers by the electrospinning technique. The effect of electrospinning on the formation of ultrafine polyamide‐6 nanofiber structure was examined. The morphological and structural characterizations and thermal properties of the ultrafine polyamide‐6 nanofibers were investigated in comparison with bulk polyamide‐6 pellets. In order to accurately characterize the ultrafine polyamide‐6 nanofiber structure by direct identification of mass resolved components, we performed matrix‐assisted laser desorption ionization time‐of‐flight (MALDI‐TOF) mass spectrometry. Field emission scanning electron microscopy images revealed the presence of ultrafine polyamide‐6 nanofibers bound between the main fibers. The diameter of the polyamide‐6 nanofibers was observed to be in the range 75–110 nm, whereas the ultrafine structures consisted of regularly distributed very fine nanofibers with diameters of about 9–28 nm. The MALDI‐TOF spectra showed the presence of protonated and sodiated ions that were assigned to polyamide‐6 chains. Copyright © 2011 Society of Chemical Industry

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“…In recently, superhydrophobic surfaces (with water contact angle larger than 150° and sliding angle (SA) is smaller than 10°) have shown great interest due to the potential application in selfcleaning materials [3], antifogging surfaces [4], antireflective surfaces [5], microfluid manipulation [6] and so on. Many novel methods for the fabrication of super hydrophobic surfaces have been developed such as anodic oxidation [7,8], chemical deposition [9], chemical etching [10][11][12][13][14][15], chemical vapor deposition [16][17][18][19], colloidal self-assembly [20][21][22], electrospinning [23,24], sol-gel [25,26] and some others [27,28].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Mechanically Stable Superhydrophobic Aluminium Surface with Excellent Self-Cleaning and Anti-Fogging Properties

Varshney

Mohapatra

Kumar

2017

Preprint

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Development of the self-cleaning and anti-fogging superhydrophobic coating for aluminum surfaces which is durable in the aggressive conditions has raised tremendous interest in materials science.In this work, by employing chemical etching technique with mixture of hydrochloric and nitric acid, followed by passivation with lauric acid, superhydrophobic aluminum surface was synthesized. The surface morphology analysis reveals the presence of rough microstructures on coated aluminium surface.Superhydrophobicity with water contact angle of 170 ± 3.9° and sliding angle of 4 ± 0.5° is achieved.Surface bounces off the high speed water jet, indicating excellent water-repellent nature of coating. It is also continuously floated on water surface for several weeks, showing excellent buoyancy nature.Additionally, coating maintains its superhydrophobicity after undergoing 100 cycles of adhesive tape peeling test. Its superhydrophobic nature withstands 90° and 180° bending, and repeated folding and defolding. Coating exhibits the excellent self-cleaning property. In low temperature condensation test, almost no accumulation of water drops on the surface, showing the excellent anti-fogging property of coating. This approach can be applied to any size and shape of aluminium surface and hence has great industrial applications.

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Modification of surface properties of electrospun polyamide nanofibers by means of a perfluorinated acridine

Cited by 33 publications

References 28 publications

Electrospinning Superhydrophobic Fibers Using Surface Segregating End-Functionalized Polymer Additives

Electrospinning Superhydrophobic Fibers Using Surface Segregating End-Functionalized Polymer Additives

Preparation and characterization of electrospun ultrafine polyamide‐6 nanofibers

Fabrication of Mechanically Stable Superhydrophobic Aluminium Surface with Excellent Self-Cleaning and Anti-Fogging Properties

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