Results 231 to 240 of about 14,492 (257)
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Journal of Macromolecular Science: Part A - Chemistry, 1985
Abstract The effect of water vapor pressure on the molecular weight of molten poly (ethylene terephthalate) has been followed by measurement of the changes which occur in the intrinsic viscosity and the end-group concentrations upon hydrolysis. It was found that phosphoric acid is highly effective as a stabilizer; the hydrolysis rate constant (Kh ...
T. H. Shah +3 more
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Abstract The effect of water vapor pressure on the molecular weight of molten poly (ethylene terephthalate) has been followed by measurement of the changes which occur in the intrinsic viscosity and the end-group concentrations upon hydrolysis. It was found that phosphoric acid is highly effective as a stabilizer; the hydrolysis rate constant (Kh ...
T. H. Shah +3 more
openaire +1 more source
Crystallization of Poly(ethylene terephthalate)
1968It has been reported that several endothermic melting transitions exist in differential thermal analysis thermograms of polyethylene.1 Similar transitions are reported in differential scanning calorimetric thermograms of poly (ethylene terephthalate)2 and bisphenol-A polycarbonate.3 The appearance of separate melting endotherms in these polymers is ...
E. L. Lawton, D. M. Cates
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Glycolysis of poly(ethylene terephthalate) wastes in xylene
Journal of Applied Polymer Science, 1998To reclaim the monomers or prepare intermediates suitable for other polymers zinc acetate catalayzed glycolysis of waste poly(ethylene terephthalate) (PET) was carried out with ethylene or propylene glycol, with PET/glycol molar ratios of1 : 0.5–1 : 3, in xylene at 170–245°C.
Güçlü, Gamze +4 more
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Properties of poly(ethylene terephthalate)/poly(ethylene naphthalate) blends
Polymer Engineering & Science, 1999AbstractBlends composed of poly(ethylene terephthalate) (PET) as the majority component and poly(ethylene naphthalate)(PEN) as the minority component were melt‐mixed in a single screw extruder at various PET/PEN compound ratios. Tensile and flexural test results reveal a good PET/PEN composition dependence, indicating that the compatibility of the ...
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Journal of Plastic Film & Sheeting, 2011
Sixty (60) polyethylene terephthalate (PET) sheets containing 0—100% recycled-PET (RPET) bottle flake were produced using industrial extruders. The PET/RPET sheets were characterized using differential scanning calorimetry, ultraviolet— visible spectroscopy, mechanical testing, and inductively coupled plasma—atomic emission spectroscopy (ICP—AES).
Greg Curtzwiler +4 more
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Sixty (60) polyethylene terephthalate (PET) sheets containing 0—100% recycled-PET (RPET) bottle flake were produced using industrial extruders. The PET/RPET sheets were characterized using differential scanning calorimetry, ultraviolet— visible spectroscopy, mechanical testing, and inductively coupled plasma—atomic emission spectroscopy (ICP—AES).
Greg Curtzwiler +4 more
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Poly(ethylene terephthalate)-PET and Poly(ethylene naphthalate)-PEN
2019Since its discovery in 1930 by American chemist Wallace Hume Carothers and his coworkers, poly(ethylene terephthalate) (PET) attracted a great deal of attention by academic and industrial researchers. The new synthetic polymer, whose linear structure is built up by terephthalic acid and ethylene glycol units, was soon used for an extremely wide range ...
Sorrentino +5 more
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Upcycling of poly(ethylene terephthalate) to produce high-value bio-products
Cell Reports, 2023Yifeng Hu +2 more
exaly
Chemo‐Biological Upcycling of Poly(ethylene terephthalate) to Multifunctional Coating Materials
ChemSusChem, 2021Hee Taek Kim, Mi Hee Ryu, Hye Min Song
exaly
Synthesis of poly(ethylene terephthalate) based on glycolysis of waste PET fiber
Journal of Macromolecular Science - Pure and Applied Chemistry, 2020Xuzhen Zhang, Xiuhua Wang
exaly