scholarly journals ORIENTATION BEHAVIOR OF BRANCHED POLY (ETHYLENE TEREPHTHALATE) IN MELT SPINNING PROCESS

1980 ◽  
Vol 36 (8) ◽  
pp. T319-T323
Author(s):  
Takeshi Akahane ◽  
Takani Mochizuki ◽  
Haruo Nakayasu ◽  
Shuji Kawai
Keyword(s):  
Melt Spinning ◽  
Ethylene Terephthalate ◽  
Orientation Behavior ◽  
Poly Ethylene Terephthalate ◽  
Spinning Process ◽  
Poly Ethylene

Development of high-tenacity, high-modulus poly(ethylene terephthalate) filaments via a next generation wet-melt-spinning process

2016 ◽  
Vol 57 (2) ◽  
pp. 224-230 ◽  
Author(s):  
Joshua H. Yoon ◽  
Huseyin Avci ◽  
Mesbah Najafi ◽  
Lassad Nasri ◽  
Samuel M. Hudson ◽  
...  
Keyword(s):  
Melt Spinning ◽  
Ethylene Terephthalate ◽  
High Modulus ◽  
Next Generation ◽  
Poly Ethylene Terephthalate ◽  
Spinning Process ◽  
Poly Ethylene

High-Speed Melt Spinning of Sheath-Core Bicomponent Polyester Fibers: High and Low Molecular Weight Poly(ethylene Terephthalate) Systems

1997 ◽  
Vol 67 (9) ◽  
pp. 684-694 ◽  
Author(s):  
J. Radhakrishnan ◽  
Takeshi Kikutani ◽  
Norimasa Okui
Keyword(s):  
Molecular Weight ◽  
High Speed ◽  
Melt Spinning ◽  
Ethylene Terephthalate ◽  
Maxwell Model ◽  
Low Molecular Weight ◽  
Structural Development ◽  
Solidification Temperature ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Sheath-core bicomponent spinning of high molecular weight poly (ethylene terephthalate) (hmpet, IV = 1.02 dl/g) and low molecular weight pet (lmpet, IV = 0.65 dl/g) is done at a take-up velocity range of 1 to 7 km/min. The structures of the individual components in the as-spun bicomponent fibers are characterized. Orientation and orientation-induced crystallization of the hmpet component are enhanced, while those of the lmpet component are suppressed in comparison to corresponding single component spinning. Numerical simulation with the Newtonian model shows that elongational stress in the hmpet component is enhanced and that of the lmpet decreases during high-speed bicomponent spinning. The difference in elongational viscosity is the main factor influencing the mutual interaction between hmpet and lmpet, which in turn affect spinline dynamics, solidification temperature, and structural development in high-speed bicomponent spinning. Simulation with an upper-convected Maxwell model shows that considerable stress relaxation can occur in the lmpet component if the hmpet component solidifies before lmpet. A mechanism for structural development is also proposed, based on the simulation results and structural characterization data.

Melt spinning and drawing of 2-methyl-1,3-propanediol-substituted poly(ethylene terephthalate)

2003 ◽  
Vol 88 (11) ◽  
pp. 2598-2606 ◽  
Author(s):  
Jaein Suh ◽  
J. E. Spruiell ◽  
Steven A. Schwartz
Keyword(s):  
Melt Spinning ◽  
Ethylene Terephthalate ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

scholarly journals The Molecular Orientation Behavior and the Crystallinity of CO2 Laser-Heated Drawn Poly(ethylene terephthalate) Fiber

2003 ◽  
Vol 59 (6) ◽  
pp. 235-238 ◽  
Author(s):  
Toshifumi Ikaga ◽  
Yutaka Ohkoshi ◽  
Yasuo Gotoh ◽  
Masanobu Nagura ◽  
Yutaka Kawahara
Keyword(s):  
Co2 Laser ◽  
Molecular Orientation ◽  
Ethylene Terephthalate ◽  
Orientation Behavior ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Laser Heated

Poly(ethylene terephthalate)/poly(ethylene-co-vinyl alcohol) sheath-core fibers: preparation and characterization

2015 ◽  
Vol 35 (8) ◽  
pp. 785-791 ◽  
Author(s):  
Shufeng Li ◽  
Rui Wang
Keyword(s):  
Mechanical Properties ◽  
Vinyl Alcohol ◽  
Ethylene Terephthalate ◽  
Moisture Absorption ◽  
Composite Fiber ◽  
Processing Temperature ◽  
Composite Fibers ◽  
Poly Ethylene Terephthalate ◽  
Spinning Process ◽  
Poly Ethylene

Abstract A novel sheath-core poly(ethylene terephthalate) (PET)/poly(ethylene-co-vinyl alcohol) (EVOH) composite fiber was designed and manufactured to improve the hydrophilicity of the PET fibers. The thermal stability of EVOH was first examined to determine the possible processing temperature. Second, the rheological characteristics of EVOH were measured to obtain the appropriate spinning parameters. Then, PET/EVOH composite fibers with various sheath-core ratios were manufactured and the effect of sheath-core ratio on the stable spinning process was investigated. Scanning electron microscopy (SEM) shows that the PET/EVOH fibers possess a round sheath-core cross-section and a smooth surface, indicating successful spinning. Finally, the mechanical properties and moisture absorption of the PET/ EVOH composite fibers were measured. For PET/EVOH composite fibers, the PET content contributes to the mechanical properties and the EVOH content contributes to the moisture absorption. For the PET/EVOH composite fibers with a sheath-core ratio of 50:50, the moisture regains at room conditions reach to 2.8% and the breaking strength is 2.53 cN/dtex. These good mechanical and moisture properties attract good application prospects.

Poly(ethylene terephthalate) melt spinning via controlled threadline dynamics

1992 ◽  
Vol 46 (3) ◽  
pp. 531-552 ◽  
Author(s):  
Chon-Yie Lin ◽  
Paul A. Tucker ◽  
John A. Cuculo
Keyword(s):  
Melt Spinning ◽  
Ethylene Terephthalate ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene
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