Observation of wetting behavior of polypropylene microfibers by environmental scanning electron microscope

Wei, Qufu; Mather, Robert Rhodes; Fotheringham, Alexander; Yang, Ruodan

doi:10.1016/s0021-8502(02)00096-4

Cited by 21 publications

(14 citation statements)

References 5 publications

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Section: Discussionmentioning

confidence: 99%

“…In contrast, experiments carried out with oil microdroplets (which were added using a microinjector since oil condensation was not available), consistently showed the highly wettable character of the surface towards the oil (small contact angle). Quantification through Carroll's approach was undertaken by the same authors,127 obtaining a contact angle of 15°–20°, demonstrating the affinity for oil, and 85°–95° for water. In a later work, the authors observed small but significant differences in the wetting behavior of three different oils of increasing viscosity 128.…”

Section: Discussionmentioning

confidence: 99%

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Ultrasmall Liquid Droplets on Solid Surfaces: Production, Imaging, and Relevance for Current Wetting Research

Méndez-Vilas

Jódar-Reyes

González-Martı́n

2009

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130

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The investigation of micro- and nanoscale droplets on solid surfaces offers a wide range of research opportunities both at a fundamental and an applied level. On the fundamental side, advances in the techniques for production and imaging of such ultrasmall droplets will allow wetting theories to be tested down to the nanometer scale, where they predict the significant influence of phenomena such as the contact line tension or evaporation, which can be neglected in the case of macroscopic droplets. On the applied side, these advances will pave the way for characterizing a diverse set of industrially important materials such as textile or biomedical micro- and nanofibers, powdered solids, and topographically or chemically nanopatterned surfaces, as well as micro-and nanoscale devices, with relevance in diverse industries from biomedical to petroleum engineering. Here, the basic principles of wetting at the micro- and nanoscales are presented, and the essential characteristics of the main experimental techniques available for producing and imaging these droplets are described. In addition, the main fundamental and applied results are reviewed. The most problematic aspects of studying such ultrasmall droplets, and the developments that are in progress that are thought to circumvent them in the coming years, are highlighted.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Ultrasmall Liquid Droplets on Solid Surfaces: Production, Imaging, and Relevance for Current Wetting Research

Méndez-Vilas

Jódar-Reyes

González-Martı́n

2009

Small

124

130

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“…The wet mode was selected from the ESEM controller and the chamber was pumped to 6 Torr. Images were acquired at a temperature of 7°C, since this minimized the risk of accidental freezing 31. Chamber pressure was then increased by 0.5 Torr increments.…”

Section: Methodsmentioning

confidence: 99%

“…Images were acquired at a temperature of 78C, since this minimized the risk of accidental freezing. 31 Chamber pressure was then increased by 0.5 Torr increments. As relative humidity reached 100% (%7.5 Torr), water condensed onto the surface of the sample.…”

Section: Environmental Scanning Electron Microscopymentioning

confidence: 99%

New polymeric materials for paper and textiles conservation. II. Grafting polymerization of ethyl acrylate/methyl methacrylate copolymers onto linen and cotton

Princi

Vicini

Pedemonte

et al. 2006

J of Applied Polymer Sci

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In the preservation of Cultural Heritage items, the use of polymeric materials for the consolidation and protection of artifacts with historical and artistic value is widely accepted, except for cellulose-based materials, since here there are no suitable products and appropriate application techniques. Grafting polymerization of acrylic monomers onto cellulose chains represents an innovative method of restoration for both artificially and naturally aged textiles. In this article, some results concerning the grafting polymerization of ethyl acrylate/ethyl methacrylate 75/25 and ethyl acrylate/methyl methacrylate/trifluoroethyl methacrylate 73/24.5/2.5 polymers onto linen and cotton are reported. The effectiveness of grafting polymerization as a method for textiles conservation is discussed. The consolidating and protective effects were investigated by evaluating the mechanical properties and the wetting behavior of the grafted samples, and comparing them with the original and aged substrates.

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“…ESEM provides a new tool for direct observation of wetting at a micron level (Wei et al, 2002). The presence of liquid water in the ESEM specimen chamber allows the observation of wetting without the need for coating or drying of the sample.…”

Section: Introductionmentioning

confidence: 99%

Esem Study of Oil Wetting Behaviour of Polypropylene Fibres

Wei

Mather

Fotheringham

et al. 2003

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Étude ESEM de la mouillabilité des fibres de polypropylène par l'huile -Les fibres de polypropylène ont été utilisées de manière conséquente dans les domaines relatifs à l'huile tels que les matériaux absorbants et coalescents à l'huile, les filtres à huile et les séparateurs d'huile. La mouillabilité des fibres par l'huile est particulièremement importante dans ces applications. La technique du microscope environmental scanning electron (ESEM) a été utilisée dans cette étude afin de comprendre la mouillabilité des fibres de polypropylène par l'huile. La mouillabilité a été observée par des mesures d'angle de contact avec l'huile. Les gouttes d'huile ont été ajoutées sur les fibres à l'aide d'une micropipette. Les angles de contact ont été mesurés à partir d'un micrographe ESEM utilisant l'analyse de l'image et l'approche théorique. L'observation ESEM révèle des fibres individuelles au niveau microscopique. Abstract -ESEM Study of Oil Wetting Behaviour of Polypropylene Fibres

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Observation of wetting behavior of polypropylene microfibers by environmental scanning electron microscope

Cited by 21 publications

References 5 publications

Ultrasmall Liquid Droplets on Solid Surfaces: Production, Imaging, and Relevance for Current Wetting Research

Ultrasmall Liquid Droplets on Solid Surfaces: Production, Imaging, and Relevance for Current Wetting Research

New polymeric materials for paper and textiles conservation. II. Grafting polymerization of ethyl acrylate/methyl methacrylate copolymers onto linen and cotton

Esem Study of Oil Wetting Behaviour of Polypropylene Fibres

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