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Depolymerization of polyethylene terephthalate with glycol under comparatively mild conditions
Polymer Degradation and Stability, 2023Dongxia Yan, Jiayu Xin
exaly +2 more sources
Journal of Applied Polymer Science, 2004
AbstractThe degradation of diethylene glycol terephthalate (DTP) and polyethylene terephthalate fiber (PET fiber) by microbes and lipase was studied. The HPLC method was used to determine the degradation ratio and degradation rule of DTP. Greater than 90% DTP was degraded by microbes in 24 days and 40% by lipase in 24 h.
Jianfei Zhang +3 more
openaire +1 more source
AbstractThe degradation of diethylene glycol terephthalate (DTP) and polyethylene terephthalate fiber (PET fiber) by microbes and lipase was studied. The HPLC method was used to determine the degradation ratio and degradation rule of DTP. Greater than 90% DTP was degraded by microbes in 24 days and 40% by lipase in 24 h.
Jianfei Zhang +3 more
openaire +1 more source
Polymer International, 1996
Poly(ethylene terephthalate) copolymers were prepared by melt polycondensation of dimethyl terephthalate and excess ethylene glycol with 10-40 mol% (in feed) of poly(ethylene glycol) (E) and poly(tetramethylene glycol) (B), with molecular weight (MW) of E and B 200-7500 and 1000, respectively. The reduced specific viscosity of copolymers increased with
Minoru Nagata +4 more
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Poly(ethylene terephthalate) copolymers were prepared by melt polycondensation of dimethyl terephthalate and excess ethylene glycol with 10-40 mol% (in feed) of poly(ethylene glycol) (E) and poly(tetramethylene glycol) (B), with molecular weight (MW) of E and B 200-7500 and 1000, respectively. The reduced specific viscosity of copolymers increased with
Minoru Nagata +4 more
openaire +1 more source
Applied and Computational Engineering, 2023
Polybutylene terephthalate and polyethylene glycol terephthalate are subjected to thermal-oxidative degradation and thermomechanical degradation during the process of melt blending, which affect the polymer structure and properties. The effect of feed properties of polyethylene glycol terephthalate and the addition of modified nanoparticles on blends ...
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Polybutylene terephthalate and polyethylene glycol terephthalate are subjected to thermal-oxidative degradation and thermomechanical degradation during the process of melt blending, which affect the polymer structure and properties. The effect of feed properties of polyethylene glycol terephthalate and the addition of modified nanoparticles on blends ...
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The kinetics of diethylene glycol formation in the preparation of polyethylene terephthalate
Journal of Polymer Science Part A: Polymer Chemistry, 1998For revealing diethylene glycol (DEG) formation in poly(ethylene terephthalate) (PET) synthesis, this research focused on finding the stage most critical for DEG formation. It is found that the esterification stage was the most critical stage for DEG formation during production of PET through the direct esterification process. In addition, the kinetics
Jong-Wu Chen, Leo-Wang Chen
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Small, 2023
AbstractElectrochemical valorization of polyethylene terephthalate (PET) waste streams into commodity chemicals offers a potentially sustainable route for creating a circular plastic economy. However, PET wastes upcycling into valuable C2 product remains a huge challenge by the lack of an electrocatalyst that can steer the oxidation economically and ...
Mengmeng Du +8 more
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AbstractElectrochemical valorization of polyethylene terephthalate (PET) waste streams into commodity chemicals offers a potentially sustainable route for creating a circular plastic economy. However, PET wastes upcycling into valuable C2 product remains a huge challenge by the lack of an electrocatalyst that can steer the oxidation economically and ...
Mengmeng Du +8 more
openaire +2 more sources
Journal of Raman Spectroscopy
ABSTRACT Materials based on polyethylene terephthalate (PET) and polyethylene terephthalate glycol (PETG) are in high demand for numerous practical applications. Their physico‐chemical properties depend heavily on the crystallinity degree (CD).
L. Yu. Kozlova +7 more
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ABSTRACT Materials based on polyethylene terephthalate (PET) and polyethylene terephthalate glycol (PETG) are in high demand for numerous practical applications. Their physico‐chemical properties depend heavily on the crystallinity degree (CD).
L. Yu. Kozlova +7 more
openaire +1 more source
Mechanical Properties of 3D-Printed Parts Made of Polyethylene Terephthalate Glycol
Journal of Materials Engineering and Performance, 2021Fused deposition modeling (FDM), one of various additive manufacturing (AM) technologies, has revolutionized the manufacturing industry, from the development of concept models to the creation of functional parts. FDM uses a wide variety of materials to create 3D-printed parts.
Mohammad Taregh Sepahi +3 more
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Tensile and Fatigue Analysis of 3D-Printed Polyethylene Terephthalate Glycol
Journal of Failure Analysis and Prevention, 2019This paper investigates the tensile and fatigue behavior of polyethylene terephthalate glycol (PETG) parts manufactured by fused filament fabrication (FFF). PETG is a thermoplastic polyester that is available as a filament for commercial desktop 3D printers.
Grzegorz Dolzyk, Sungmoon Jung
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