scholarly journals Creep behavior and elastic properties of annealed cold-drawn poly(ethylene terephthalate): The role of the smectic structure as a precursor of crystallization

2001 ◽  
Vol 90 (12) ◽  
pp. 6006-6010 ◽  
Author(s):  
A. Flores ◽  
F. J. Baltá Calleja ◽  
T. Asano
Keyword(s):  
Elastic Properties ◽  
Creep Behavior ◽  
Ethylene Terephthalate ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

scholarly journals Adsorption of humic acid on mesoporous carbons prepared from poly- (ethylene terephthalate) templated with magnesium compounds

2012 ◽  
Vol 14 (4) ◽  
pp. 95-99 ◽  
Author(s):  
Justyna Karolczyk ◽  
Sylwia Mozia ◽  
Antoni W. Morawski ◽  
Jacek Przepiórski
Keyword(s):  
Humic Acid ◽  
Water Adsorption ◽  
Ethylene Terephthalate ◽  
Porous Carbons ◽  
Preparation Conditions ◽  
Poly Ethylene Terephthalate ◽  
Magnesium Compounds ◽  
Textural Parameters ◽  
Poly Ethylene

Abstract Porous carbons obtained from poly(ethylene terephtalate) contained in a mixture with either MgCO3 or Mg(OH)2 were examined as adsorbents for removal of humic acid from water. Adsorption of the model contaminants is discussed in relation to the textural parameters of the obtained carbon materials. Pore structure parameters of the carbonaceous materials were strongly influenced by preparation conditions including temperature and relative amounts of the inorganics used during preparations as template. Porous carbons prepared revealed a potential to purify water from the model contaminant of high molecular weight. The results presented confirmed a key role of mesoporosity in the adsorption of humic acid. Fluorescence spectroscopy was confirmed to be an useful method to evaluate concentration of humic acid in water.

scholarly journals Fluorescent SiO2@Tb3+(PET-TEG)3Phen Hybrids as Nucleating Additive for Enhancement of Crystallinity of PET

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 568 ◽  
Author(s):  
Yanna Zhang ◽  
Yao Wang ◽  
Hao Li ◽  
Xuezhong Gong ◽  
Jixian Liu ◽  
...  
Keyword(s):  
Ethylene Terephthalate ◽  
Sio2 Nanoparticles ◽  
Polymer Processing ◽  
Hybrid Polymer ◽  
Inorganic Component ◽  
Hybrid Polymers ◽  
Poly Ethylene Terephthalate ◽  
Multifunctional Additives ◽  
Poly Ethylene

A hybrid polymer of SiO2@Tb3+(poly(ethylene terephthalate)-tetraglycol)3 phenanthroline (SiO2@Tb3+(PET–TEG)3Phen) was synthesized by mixing of inorganic SiO2 nanoparticles with polymeric segments of PET–TEG, whereas PET–TEG was achieved through multi-step functionalization strategy. Tb3+ ions and β-diketonate ligand Phen were added in resulting material. The experimental results demonstrated that it was well blended with PET as a robust additive, and not only promoted the crystallinity, but also possessed excellent luminescence properties. An investigation of the mechanism revealed that the SiO2 nanoparticles functioned as a crystallization promotor; the Tb3+ acted as the fluorescent centre; and the PET–TEG segments played the role of linker and buffer, providing better compatibility of PET matrix with the inorganic component. This work demonstrated that hybrid polymers are appealing as multifunctional additives in the polymer processing and polymer luminescence field.

Efficient glycolysis of PET catalyzed by a metal-free phosphazene base: the important role of EG-

2022 ◽  
Author(s):  
Chumeng Fan ◽  
Lei Zhang ◽  
Chenxi Zhu ◽  
Jingjing Cao ◽  
Yunlong Xu ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Ethylene Terephthalate ◽  
High Quality ◽  
Metal Free ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Developing efficient metal-free catalyst for the glycolysis of waste poly(ethylene terephthalate) (PET) with ethylene glycol (EG) has attracted increasing attention due to the demanding require for high-quality monomer used in...

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