Premium
Thermal degradation study of poly(1‐oxotrimethylene) in aqueous composite metal salt solutions
Author(s) -
Morita Toru,
Kato Jinichiro
Publication year - 2006
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.23693
Subject(s) - aqueous solution , materials science , composite number , tenacity (mineralogy) , composite material , degradation (telecommunications) , salt (chemistry) , spinning , chemical engineering , chemistry , organic chemistry , telecommunications , computer science , engineering
Poly(1‐oxotrimethylene) (ECO) was dissolved in an aqueous composite metal salt solution, and the ECO solution was heated at different temperatures and then used for wet spinning. Within a certain heating time, ECO fibers with a tenacity of 17.6 cN/dtex (2.3 GPa) or greater were successfully produced through hot drawing 16–17 times after drying. Over a certain heating time, however, the strength of the ECO fibers drastically decreased. A higher heating temperature shortened the heating time at which the drastic decrease in the maximum tenacity began. On the basis of ultraviolet measurements of the undrawn fibers, heating ECO in the aqueous composite metal salt solution promoted the thermal degradation of ECO because of aldol condensation or Paal–Knorr furan synthesis. The thermal degradation due to these intermolecular or intramolecular crosslinking reactions was resistant to the molecular orientation of ECO by the hot drawing of the undrawn fibers and reduced the strength of the ECO fibers by producing defects in the filament. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 3358–3363, 2006