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Fiber growth in tubular flow
Author(s) -
McHugh A. J.,
Ejike E.,
Silebi C. A.
Publication year - 1979
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.760190609
Subject(s) - materials science , tube (container) , laminar flow , fiber , composite material , polyethylene , flow (mathematics) , diffusion , thickening , mechanics , thermodynamics , physics , polymer science
Data are presented for the seeded growth of polyethylene fibers from solutions undergoing laminar flow in tubular geometry. Radial growth rates are reported for solutions of high and low molecular weight fractions for the second stage fiber thickening process which occurs in the tube entrance region. Results are also shown for high molecular weight growth from fiberglass seeds which indicate an enhanced growth rate at elevated temperatures. A two‐stage growth pattern documented earlier for the high molecular weight fraction is shown to occur for the lower molecular weight material. The Discussion includes an analysis for the tapered fiber geometry in the second stage of growth and calculations for stress‐induced, diffusion‐limited growth in the first stage downstream from the tube entrance.