Morphology of Nano and Micro Fiber Structures in Ultrafine Particles Filtration

Journal Article · Fri Jul 15 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3604490· OSTI ID:21611526

Kimmer, Dusan; Vincent, Ivo; Fenyk, Jan; Petras, David ^[1]; Zatloukal, Martin; Sambaer, Wannes ^[2]; Zdimal, Vladimir ^[3]

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1. SPUR a.s., T. Bati 299, 764 22 Zlin (Czech Republic)
2. Centre of Polymer Systems, Polymer Centre, Tomas Bata University in Zlin, nam. T. G. Masaryka 5555, 760 01 Zlin (Czech Republic)
3. Institute of Chemical Process Fundamentals of the AS CR, v.v.i., Rozvojova 135, 165 02 Praha 6 (Czech Republic)

Selected procedures permitting to prepare homogeneous nanofibre structures of the desired morphology by employing a suitable combination of variables during the electrospinning process are presented. A comparison (at the same pressure drop) was made of filtration capabilities of planar polyurethane nanostructures formed exclusively by nanofibres, space polycarbonate nanostructures having bead spacers, structures formed by a combination of polymethyl methacrylate micro- and nanofibres and polypropylene meltblown microstructures, through which ultrafine particles of ammonium sulphate 20-400 nm in size were filtered. The structures studied were described using a new digital image analysis technique based on black and white images obtained by scanning electron microscopy. More voluminous structures modified with distance microspheres and having a greater thickness and mass per square area of the material, i.e. structures possessing better mechanical properties, demanded so much in nanostructures, enable preparation of filters having approximately the same free volume fraction as flat nanofibre filters but an increased effective fibre surface area, changed pore size morphology and, consequently, a higher filter quality.

• OSTI ID: 21611526
• Journal Information: AIP Conference Proceedings, Vol. 1375, Issue 1; Conference: 4. conference on novel trends in rheology, Zlin (Czech Republic), 27-28 Jul 2011; Other Information: DOI: 10.1063/1.3604490; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMMONIUM SULFATES
COMPARATIVE EVALUATIONS
FILTRATION
IMAGE PROCESSING
MECHANICAL PROPERTIES
METHACRYLATES
MICROSPHERES
MICROSTRUCTURE
MORPHOLOGY
NANOSTRUCTURES
PARTICLE SIZE
PARTICLES
POLYCARBONATES
POLYPROPYLENE
POLYURETHANES
PRESSURE DROP
SCANNING ELECTRON MICROSCOPY
SURFACE AREA
AMMONIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CARBOXYLIC ACID SALTS
ELECTRON MICROSCOPY
EVALUATION
MATERIALS
MICROSCOPY
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYAMIDES
POLYMERS
POLYOLEFINS
PROCESSING
SEPARATION PROCESSES
SIZE
SULFATES
SULFUR COMPOUNDS
SURFACE PROPERTIES
SYNTHETIC MATERIALS