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Structure and morphology of small diameter electrospun aramid fibers
Author(s) -
Srinivasan Gokul,
Reneker Darrell H.
Publication year - 1995
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1995.210360210
Subject(s) - materials science , electrospinning , aramid , composite material , electron microscope , morphology (biology) , electron diffraction , diffraction , nanometre , fiber , synthetic fiber , polymer , optics , physics , biology , genetics
Very small diameter fibers of poly( p ‐phenylene terephthalamide) (PPTA) ranging in diameter from 40nm to a few hundreds of nanometers were made by the electrospinning process. The fibers have a circular cross‐section, are birefringent and stable at temperatures greater than 400°C. Electron diffraction patterns obtained from both as‐spun and annealed fibers show meridional and equatorial reflections demonstrating order in the material. The crystal structure and morphology of the fibers were characterized using bright and dark field electron microscopy, electron diffraction and atomic force microscopy.