scholarly journals Melt Polycondensation Process of Poly(Ethylene Terephthalate) in Grid Falling Film Tower

2009 ◽  
Vol 42 (Supplement.) ◽  
pp. s96-s102 ◽  
Author(s):  
Zhenhao Xi ◽  
Ling Zhao ◽  
Weizhen Sun ◽  
Zhaoyan Liu
Keyword(s):  
Ethylene Terephthalate ◽  
Falling Film ◽  
Melt Polycondensation ◽  
Poly Ethylene Terephthalate ◽  
Polycondensation Process ◽  
Poly Ethylene

Synthesis and Characterization of Branched Poly(Ethylene Terephthalate)

2013 ◽  
Vol 815 ◽  
pp. 738-741
Author(s):  
Yan Ming Chen ◽  
Dan Zhao ◽  
Li Yan Wang ◽  
Quan Cai Wu
Keyword(s):  
Terephthalic Acid ◽  
Ethylene Terephthalate ◽  
Raw Materials ◽  
Synthesis And Characterization ◽  
Melt Polycondensation ◽  
Poly Ethylene Terephthalate ◽  
Polyfunctional Monomer ◽  
Polycondensation Process ◽  
Poly Ethylene

Linear and branched poly (ethylene terephthalate) were prepared by using terephthalic acid, ethylene glycol as main raw materials and pentaerythritol as polyfunctional monomer through melt polycondensation method. The samples were characterized with respect to intrinsic viscosity and differential scanning calorimeter (DSC). The results show that the low branched poly (ethylene terephthalate) could be obtained by the addition of tertrafunctional pentaerythritol through common melt polycondensation process.

Kinetics of Mass Transfer in the Melt Polycondensation of Poly(Ethylene Terephthalate)

1985 ◽  
Vol 22 (10) ◽  
pp. 1413-1427 ◽  
Author(s):  
Gerald Rafler ◽  
Gerhard Reinisch ◽  
Eckhard Bonatz ◽  
Heinz Versaumer ◽  
Herbert Gajewski ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Ethylene Terephthalate ◽  
Melt Polycondensation ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Kinetics Of

scholarly journals Environmentally Friendly Polymer Blends Based on Post-Consumer Glycol-Modified Poly(Ethylene Terephthalate) (PET-G) Foils and Poly(Ethylene 2,5-Furanoate) (PEF): Preparation and Characterization

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2673
Author(s):  
Sandra Paszkiewicz ◽  
Izabela Irska ◽  
Elzbieta Piesowicz
Keyword(s):  
Polymer Blends ◽  
Ethylene Terephthalate ◽  
Environmentally Friendly ◽  
Tensile Tests ◽  
Scanning Calorimetry ◽  
Poly Ethylene Terephthalate ◽  
Phase Transition Temperatures ◽  
Polycondensation Process ◽  
Materials Recycling ◽  
Poly Ethylene

Environmentally friendly polymer blends between post-consumer PET-G and bio-based poly(ethylene 2,5 furanoate) (PEF) have been prepared. The PET-G granules were obtained from the post-consumer glycol-modified poly(ethylene terephthalate) PET-G foils from Nicrometal S.A. as a result of materials recycling. PEF was synthesized from dimethyl furan-2,5-dicarboxylate and 1,2-ethylene glycol (BioUltra) by a two-stage melt polycondensation process. According to the calculations followed by Hoy’s method, one has studied the miscibility of the components in the blend. The molecular structure of PET-G/PEF blends was analyzed by Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy, while the morphology of the blends was determined by Scanning Electron Microscopy (SEM). To evaluate phase transition temperatures, as well as the thermal effects in PET-G/PEF blends, Differential Scanning Calorimetry (DSC), Dynamic Mechanical Thermal Analysis (DMTA), and Thermogravimetric Analysis (TGA), were performed. Tensile tests revealed that along with an increase in the amount of PEF, an increase in Young’s modulus was observed. Besides, the existence of interfacial interactions between polymers, especially in the case of PET-G/PEF 80/20, enabling the PET-G chains to form a network structure with the PEF by reacting with their functional groups, allows observation of a synergistic effect in the improvement of thermal stability and water absorption.

scholarly journals Synthesis of a Bio-based and Biodegradable Poly(ethylene-co-isosorbide [2,2'-bithiophene]-5,5'-dicarboxylate) with enhanced Thermal and Degradability Properties

2021 ◽  
Author(s):  
Dasilva Wandji ◽  
Naomie Beolle Songwe Selabi
Keyword(s):  
Ethylene Terephthalate ◽  
Tensile Modulus ◽  
Barrier Properties ◽  
The Novel ◽  
Melt Polycondensation ◽  
Poly Ethylene Terephthalate ◽  
Ligand Free ◽  
Biodegradable Poly ◽  
Palladium Catalyzed ◽  
Poly Ethylene

Abstract In this investigation, a synthetic biopolymer prepared from bithiophene monomer, isosorbide and ethylene glycol, was synthesized through melt polycondensation. The result showed the polyesters to possess promising thermal and mechanical properties. The bithiophene monomer, [2,2'-bithiophene]-5,5'-dicarboxylicacid acid, was synthesized from a palladium-catalyzed, phosphine ligand-free direct coupling protocol, using polyethylene glycol palladium (Pd/PEG) as catalyst. The procedure was found effective at polymerizing the bithiophene monomer with isosorbide and glycol. The bithiophene polyester displayed several intriguing properties among good thermal resistance, crystallinity and high tensile modulus. Additionally, the bithiophene monomer coupled to isosorbide enhanced the polyester with a comparatively high glass transition temperature. Films cast out these polyesters display excellent oxygen and water barrier properties, and were interestingly superior to those of poly(ethylene terephthalate). Moreover, the novel polyester also has good soil degradability properties.

scholarly journals Synthesis and characterization of poly(ethylene terephthalate-co-1,4-cyclohexanedimethylene terephtlatate)-block-poly(tetramethylene oxide) copolymers

RSC Advances ◽  
2017 ◽  
Vol 7 (66) ◽  
pp. 41745-41754 ◽  
Author(s):  
Sandra Paszkiewicz ◽  
Anna Szymczyk ◽  
Daria Pawlikowska ◽  
Izabela Irska ◽  
Iman Taraghi ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Ethylene Terephthalate ◽  
Synthesis And Characterization ◽  
Poly Ethylene Terephthalate ◽  
Polycondensation Process ◽  
Poly Ethylene ◽  
Tetramethylene Oxide

A series of PETG-block-PTMO copolymers were synthesized by means of a polycondensation process and characterized using1H nuclear magnetic resonance and Fourier transform infrared spectroscopy, that confirm the successful synthesis of the material.

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