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Morphology–mechanical property relations in syndiotactic polypropylene (sPP) fibers
Author(s) -
Loos Joachim,
Schimanski Tilo
Publication year - 2000
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.11187
Subject(s) - materials science , tacticity , composite material , polypropylene , morphology (biology) , natural rubber , protein filament , fiber , amorphous solid , synthetic fiber , polymer , crystallography , polymerization , chemistry , biology , genetics
Mechanical properties of melt‐spun syndiotactic polypropylene single filament fibers were studied in relation to their formation conditions. Depending on the processing parameters, fibers with rubber‐elastic properties can be prepared. Dynamic mechanical studies show almost unchanged rubber‐elastic properties after 1000 test cycles. A model of the fiber morphology is introduced to explain the rubberelastic behavior: small micel‐like crystals containing molecules in the planar alltrans conformation act as physical crosslinks in the amorphous matrix.