Oxygen Gas and Water Vapor Permeability of Biaxially Stretched Poly(ethylene terephthalate)/Poly(ethylene-co-vinyl alcohol) and Poly(ethylene terephthalate-co-isophthalate)/Poly(ethylene-co-vinyl alcohol) Blend Films

2012 ◽  
Vol 51 (1) ◽  
pp. 97-104 ◽  
Author(s):  
İlhan Özen ◽  
Cahit Dalgıçdir
Keyword(s):  
Water Vapor ◽  
Vinyl Alcohol ◽  
Ethylene Terephthalate ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Blend Films ◽  
Poly Ethylene Terephthalate ◽  
Oxygen Gas ◽  
Poly Ethylene

Water Vapor Permeability of Clay Nanocomposites Based on Amorphous PET

2010 ◽  
Vol 297-301 ◽  
pp. 422-426 ◽  
Author(s):  
Antonio Greco ◽  
C. Esposito Corcione ◽  
Alfonso Maffezzoli
Keyword(s):  
Water Vapor ◽  
Ethylene Terephthalate ◽  
Volume Fraction ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Clay Nanocomposites ◽  
X Ray ◽  
Melt Intercalation ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

In this work nanocomposites based on amorphous poly(ethylene terephthalate) (PETg) were developed using melt intercalation. X-ray analysis performed on the PETg nanocomposites showed that intercalation and exfoliation took place during static mixing. The water vapor permeability of PETg nanocomposites was correlated to the volume fraction of the impermeable inorganic part of the omMMT.

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.

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
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