Solid state polymerization (SSP) of low molecular weight poly(ethylene terephthalate) (PET) copolyesters compared to conventional SSP of PET

2002 ◽  
Vol 86 (1) ◽  
pp. 230-238 ◽  
Author(s):  
Robert J. Schiavone
Keyword(s):  
Molecular Weight ◽  
Solid State ◽  
Ethylene Terephthalate ◽  
Low Molecular Weight ◽  
Poly Ethylene Terephthalate ◽  
Solid State Polymerization ◽  
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.

Solid-state polymerization of melt-spun poly(ethylene terephthalate) fibers and their tensile properties

2006 ◽  
Vol 103 (3) ◽  
pp. 1791-1797 ◽  
Author(s):  
Sachiko Nitta ◽  
Tomohiro Yamaguchi ◽  
Masayoshi Ito
Keyword(s):  
Solid State ◽  
Tensile Properties ◽  
Ethylene Terephthalate ◽  
Poly Ethylene Terephthalate ◽  
Melt Spun ◽  
Solid State Polymerization ◽  
Poly Ethylene

Crystallization conditions effect on molecular weight of solid-state polymerized poly(ethylene terephthalate)

2012 ◽  
Vol 21 (7) ◽  
pp. 415-422 ◽  
Author(s):  
Saideh Mohammadi ◽  
Faramarz Afshar Taremi ◽  
Mehdi Rafizadeh
Keyword(s):  
Molecular Weight ◽  
Solid State ◽  
Ethylene Terephthalate ◽  
Poly Ethylene Terephthalate ◽  
Crystallization Conditions ◽  
Poly Ethylene

Solid-State Polymerization of Poly(ethylene terephthalate): The Effect of Water Vapor in the Carrier Gas

2010 ◽  
Vol 296 (2) ◽  
pp. 113-121 ◽  
Author(s):  
Viviane Filgueiras ◽  
Stamatina N. Vouyiouka ◽  
Constantine D. Papaspyrides ◽  
Enrique L. Lima ◽  
Jose Carlos Pinto
Keyword(s):  
Water Vapor ◽  
Solid State ◽  
Ethylene Terephthalate ◽  
Carrier Gas ◽  
Effect Of Water ◽  
Poly Ethylene Terephthalate ◽  
Solid State Polymerization ◽  
Poly Ethylene

Effect of silica nanoparticles on solid state polymerization of poly(ethylene terephthalate)

2008 ◽  
Vol 44 (10) ◽  
pp. 3096-3107 ◽  
Author(s):  
D.S. Achilias ◽  
D.N. Bikiaris ◽  
V. Karavelidis ◽  
G.P. Karayannidis
Keyword(s):  
Solid State ◽  
Silica Nanoparticles ◽  
Ethylene Terephthalate ◽  
Poly Ethylene Terephthalate ◽  
Solid State Polymerization ◽  
Poly Ethylene

Solid-state polymerization of poly(ethylene terephthalate): Effect of organoclay concentration

2014 ◽  
Vol 54 (12) ◽  
pp. 2925-2937 ◽  
Author(s):  
Maryam Dini ◽  
Pierre J. Carreau ◽  
Musa R. Kamal ◽  
Minh-Tan Ton-That ◽  
Babak Esmaeili
Keyword(s):  
Solid State ◽  
Ethylene Terephthalate ◽  
Poly Ethylene Terephthalate ◽  
Solid State Polymerization ◽  
Poly Ethylene
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