BIODEGRADABLE FIBER AND ITS PRODUCTION

PURPOSE:To obtain a high-strength biodegradable fiber having such structure as to combine c-axis-oriented crystal with another kind of crystal differing in orientation mode from the former. CONSTITUTION:This biodegradable fiber is obtained from a thermoplastic resin consisting of either homopolymer...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KIMIZU MITSUGI, MAEKAWA YOSHIHIRO, SHINKAWA TAKEO, YAMAMOTO TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC MACROMOLECULAR COMPOUNDS SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE:To obtain a high-strength biodegradable fiber having such structure as to combine c-axis-oriented crystal with another kind of crystal differing in orientation mode from the former. CONSTITUTION:This biodegradable fiber is obtained from a thermoplastic resin consisting of either homopolymer or copolymer of a hydroxyalkanoate, having crystal with its c-axis oriented parallel with the fiber axis and another kind of crystal differing in orientation mode from the former, and it is characterized that the amount of the latter crystal is greater than that of the former. This fiber is produced by the following processes: the aforementioned thermoplastic resin is subjected to melt extrusion at 100-250 deg.C using an extruder and then spun to crystallized solidification in a water cooling bath at 20-80 deg.C, and the resultant fiber is preheated at 10-200 deg.C followed by drawing at 40-130 deg.C and then heat treatment at 60-150 deg.C.