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Polylactide. I. Continuous dry spinning–hot drawing preparation of fibers
Author(s) -
Horáček I.,
Kalíšek V.
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070541117
Subject(s) - cyclohexane , spinning , chloroform , materials science , monomer , dissolution , melt spinning , fiber , polymerization , composite material , polymer chemistry , volume (thermodynamics) , polymer , chemical engineering , chemistry , organic chemistry , physics , quantum mechanics , engineering
The mechanical properties and in vitro degradability of gamma‐rays sterilized and non‐sterlized PLLA fibers prepared by a continuous dry spinning–hot drawing process were studied in relation to the spinning solution composition. Chloroform/cyclohexane mixtures of different volume ratios were used for dissolution either purified or as polymerized (with a residual monomer) PLLA. The fibers obtained had average or poor mechanical properties and a porous structure with a pointed outer skin. No increase of the degradation rate was observed except for the fibers formed from pure chloroform with a residual monomer at a drawing temperature of 110°C. At chloroform/cyclohexane volume ratio of 6:4 the process resulted in nearly hollow fiber formation. © 1994 John Wiley & Sons, Inc.