Glycolytic aminolysis of poly(ethylene terephthalate) waste for recovery of value-added comonomer at atmospheric pressure

2003 ◽  
Vol 90 (12) ◽  
pp. 3437-3444 ◽  
Author(s):  
A. S. Goje ◽  
S. A. Thakur ◽  
Tushar M. Patil ◽  
S. Mishra
Keyword(s):  
Atmospheric Pressure ◽  
Ethylene Terephthalate ◽  
Value Added ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Glycolytic Aminolysis of Poly (Ethylene Terephthalate) Waste at Atmospheric Pressure for Recovery of a Value Added Insecticide

2005 ◽  
Vol 44 (1) ◽  
pp. 163-181 ◽  
Author(s):  
A.S. Goje* ◽  
S.A. Thakur ◽  
Y.P. Chauhan ◽  
Tushar M. Patil ◽  
S.A. Patil ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Ethylene Terephthalate ◽  
Value Added ◽  
A Value ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Application of atmospheric pressure plasma polymerization for soil guard finishing of textiles

2017 ◽  
Vol 88 (11) ◽  
pp. 1278-1289 ◽  
Author(s):  
Keiko Gotoh ◽  
Eriko Shohbuke ◽  
Gyohni Ryu
Keyword(s):  
Atmospheric Pressure ◽  
Ethylene Terephthalate ◽  
Silicon Oxide ◽  
Atmospheric Pressure Plasma ◽  
Fiber Surface ◽  
Water Repellency ◽  
Red Clay ◽  
Pressure Plasma ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Surface coating by atmospheric pressure plasma jet (APPJ) polymerization was employed to achieve soil guard protection of textiles. Hexamethyldisiloxane was chosen as a precursor for depositing silicon oxide layers on the fiber surface. Plain-woven polyester and rayon filament fabrics and a geometrically simple poly (ethylene terephthalate) film were used as substrates, which were treated by the APPJ polymerization and by the commonly used two fluorochemical resins for comparison. The samples subjected to the APPJ polymerization showed superior water repellency as compared to the resin-treated samples. Interestingly, the APPJ polymerization provided oleophobicity to diiodomethane and oleophilicity to hexadecane. The deposition of model particulate soils, carbon black and red clay, on the fabrics and the film was evaluated by the surface reflectance method and by microscope image analysis, respectively. It was found that the APPJ polymerization remarkably prevented soil deposition as compared to the treatment with two fluorochemical resins. Contrary to our expectations, the APPJ polymerization did not significantly affect the removal of the particulate soils from the substrates by aqueous cleaning.

scholarly journals New UV Curable Acrylated Urethane-Oligoesters Derived From Poly(Ethylene Terephthalate) PET Waste

2021 ◽  
Author(s):  
Medhat S. Farahat Khedr
Keyword(s):  
Ethylene Terephthalate ◽  
Value Added ◽  
Hydroxyl Groups ◽  
Polymer Waste ◽  
Uv Curable ◽  
Pet Waste ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
High Mechanical Stress ◽  
Value Added Products

Abstract The glycolysis products of polyethylene terephthalate (PET) waste represent a potential source for many value-added products that contain terephthalate repeating units in their backbones. Terephthalate repeating units were not attained directly from terephthalic acid due to its high melting point in addition to its tendency to sublime before it reacts. Glycolysis of PET provides an excellent solution for recycling polymer waste and constitutes a substantial starting material for manufacturing materials with high mechanical stress, such as unsaturated polyesters and polyurethane products. In this study, PET was first depolymerized by glycolysis, and glycolyzed products were then dimerized by reaction with toluene di-isocyanate TDI with half equivalence of their hydroxyl groups for the purpose of inserting urethane blocks into the oligomer structure. The remaining half equivalence of terminal hydroxyl groups was modified into acrylate groups by an acrylation reaction. The acrylated oligo urethane ester products were crosslinked with different co-monomers and tested for UV curability and mechanical properties, and they showed outstanding results.

Activation of poly(ethylene terephthalate) surfaces by atmospheric pressure plasma

2012 ◽  
Vol 97 (11) ◽  
pp. 2249-2254 ◽  
Author(s):  
Tomáš Homola ◽  
Jindřich Matoušek ◽  
Beáta Hergelová ◽  
Martin Kormunda ◽  
Linda Y.L. Wu ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Ethylene Terephthalate ◽  
Atmospheric Pressure Plasma ◽  
Pressure Plasma ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene
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