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Extrusion and melt spinning characteristics of thermally degraded polypropylene
Author(s) -
Yamane Hideki,
White James L.
Publication year - 1983
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.760230907
Subject(s) - die swell , materials science , polypropylene , spinning , extrusion , composite material , melt spinning , swell , viscosity , degradation (telecommunications) , extrusion moulding , thermal , thermodynamics , telecommunications , physics , computer science
A basic study of the influence of thermal degradation of polypropylene on its extrudate swell and melt spinning characteristics is reported. The degradation reduces swell, changes the shape of the spinline diameter/velocity profile (i.e., the spinline apparent elongational viscosity function), and stabilizes the melt spinning process. The importance of molecular weight distribution narrowing during the degradation process is noted in these studies.