Simulation for Dry Spinning Process of Segmented Poly (urethane-urea) Fibers
نویسندگان
چکیده
منابع مشابه
A comparative study of the structure–property behavior of highly branched segmented poly(urethane urea) copolymers and their linear analogs
The solid-state structure–property behavior of highly branched segmented poly(urethane urea) (PUU) copolymers and their linear analog was investigated. A limited study of their solution rheological behavior was also undertaken. The linear PUUs were synthesized by the twostep prepolymer method, whereas the oligomeric A2CB3 methodology was utilized to synthesize the highly branched materials. The...
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Random copolymers of epsilon-caprolactone and 2-oxo-12-crown-4 ether, poly(CL-co-OC), were used as soft segments in the synthesis of a set of poly(urethane)urea thermoplastic elastomers. With increasing OC content, the soft segment crystallinity decreased, which influenced the mechanical properties: strain induced crystallization disappeared upon the introduction of OC into poly(CL). The materi...
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Gelatin fibers have been prepared by dry spinning based on the sol-gel transition phenomena of aqueous gelatin solutions. This method is simple and environmentally friendly because only water is used for the spinning, thereby avoiding the use of any toxic organic solvents. A sol-state aqueous solution of gelatin at 50 ̋C was extruded into air through a thin nozzle at room temperature followed b...
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In the present study we describe the synthesis, wet spinning, mechanical testing, and degradation of poly(urethane urea)s (PUURs) intended for clinical use in anterior cruciate ligament (ACL) reconstruction. The effects of soft segment chemical composition and molar mass and the kind of diamine chain extender on the material properties were investigated. It was found that the fibers made of PUU...
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ژورنال
عنوان ژورنال: Seikei-Kakou
سال: 2007
ISSN: 0915-4027,1883-7417
DOI: 10.4325/seikeikakou.19.300