Results 241 to 250 of about 114,109 (274)
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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
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Analytical Chemistry, 2018
The use of plastic materials in daily life, industry, and agriculture can cause soil pollution with plastic fragments down to the micrometer scale, i.e., microplastics. Quantitative assessment of microplastics in soil has been limited so far.
J. David +3 more
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The use of plastic materials in daily life, industry, and agriculture can cause soil pollution with plastic fragments down to the micrometer scale, i.e., microplastics. Quantitative assessment of microplastics in soil has been limited so far.
J. David +3 more
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General features to enhance enzymatic activity of poly(ethylene terephthalate) hydrolysis
Nature Catalysis, 2021Chun-Chi Chen +16 more
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Calculation of macrocyclization equilibria for poly(ethylene terephthalate)
Die Makromolekulare Chemie, 1979AbstractThe cyclization equilibria constant Kx is evaluated for the formation of cyclic poly(ethylene terephthalate)s (PET) in the range of degree of polymerization 2 ≤ x ≤ 10 on the basis of an elaborated form of the Jacobson‐Stockmayer theory. According to this theory, Kx = W(0)·2Γ0(1)/(σcx NA), where W(r) is the probability density function for the ...
SUTER, UW, MUTTER, M
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Chemical Engineering Journal, 2019
Ultraviolet-shielding poly(ethylene α-truxillate-co-ethylene terephthalate) (PETT) was synthesized via the addition of α-truxillic acid (TA) as a third monomer in the copolymerization modification of poly (ethylene terephthalate) (PET). The effects of TA,
L. Ding +6 more
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Ultraviolet-shielding poly(ethylene α-truxillate-co-ethylene terephthalate) (PETT) was synthesized via the addition of α-truxillic acid (TA) as a third monomer in the copolymerization modification of poly (ethylene terephthalate) (PET). The effects of TA,
L. Ding +6 more
semanticscholar +1 more source
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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Photocatalytic Upcycling of Poly(ethylene terephthalate) Plastic to High-Value Chemicals
Applied Catalysis B: Environmental, 2022Mei Han, Shoujun Zhu, C. Xia, Baihe Yang
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Metal-catalysed Poly(Ethylene) terephthalate and polyurethane degradations by glycolysis
, 2019The recovery of Polyol from PolyUretane (PU) and Bis(2-HydroxyEthyl) Terephthalate (BHET) from Poly(Ethylene) Terephthalate (PET) from plastic waste by transesterification reactions was achieved, by using a wide scope of simple air-stable metal salts ...
Raymundo Esquer, Juventino J. García
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