Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/1898
Title: Investigation on glassy skin formation of porous polystyrene fibers electrospun from DMF
Authors: Demir, Mustafa Muammer
Keywords: Capillary flow
Electrospinning
Humidity
Nanomaterials
Porosity
Issue Date: Jan-2010
Publisher: BME-PT
Source: Demir, M. M. (2010). Investigation on glassy skin formation of porous polystyrene fibers electrospun from DMF. Express Polymer Letters, 4(1), 2-8. doi:10.3144/expresspolymlett.2010.2
Abstract: Micrometer and submicrometer diameter of polystyrene (PS) fibers were electrospun from various dimethyl formamide (DMF) solutions at different weight fractions under 35% relative humidity. Increasing polymer fraction in the solution results in a gradual morphological transition from beads-with-incipient to bead-free fibers and also increases the diameter. The formation of uniform glassy skin presumably due to radial capillary flow within the liquid jet was confirmed by scanning electron microscope. The thickness of the skin varies with the weight fraction of PS; therefore, it was normalized with respect to average fiber diameter (AFD). The skin gets thinner as the weight fraction of PS increases. In addition, the fibers exhibit highly porous internal structure and smooth surface along with slight porosity. The development of porosity is attributed to liquid-liquid phase separation of water molecules in atmospheric moisture and DMF.
URI: http://doi.org/10.3144/expresspolymlett.2010.2
http://hdl.handle.net/11147/1898
ISSN: 1788-618X
1788-618X
Appears in Collections:Chemistry / Kimya
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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