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Structure formation during spinning of poly(p‐phenylenebenzobisthiazole) fiber
Author(s) -
Cohen Y.,
Thomas E. L.
Publication year - 1985
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760251708
Subject(s) - materials science , spinning , fiber , coagulation , polymer , fibril , composite material , phase diagram , transmission electron microscopy , phase (matter) , chemical engineering , nanotechnology , biophysics , chemistry , organic chemistry , psychology , psychiatry , engineering , biology
The structure formed in the coagulation stage of the spinning process of poly(p‐phenylene benzobisthiazole) fiber is studied by electron microscopy. An oriented network of microfibrils with typical fibril diameters of about 80‐100Å is observed. We suggest that these microfibrils are the fundamental structural elements of the fiber. Thus, knowledge of the mechanism by which this initial structure is formed may allow for better control of final fiber properties. The relation of structure formation during coagulation to the phase diagram of a rigid polymer solution and to the kinetic mechanism of the phase transition is discussed.