Synthesis of gasoline and jet fuel range cycloalkanes and aromatics from poly(ethylene terephthalate) waste

2019 ◽  
Vol 21 (10) ◽  
pp. 2709-2719 ◽  
Author(s):  
Hao Tang ◽  
Ning Li ◽  
Guangyi Li ◽  
Aiqin Wang ◽  
Yu Cong ◽  
...  
Keyword(s):  
Ethylene Terephthalate ◽  
Jet Fuel ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
First Time

Gasoline and jet fuel range C7–C8 cycloalkanes and aromatics were synthesized for the first time in high overall yield (∼95%) from poly(ethylene terephthalate) waste.

Highly transparent films of new copolyesters derived from terephthalic and 2,4-furandicarboxylic acids

2019 ◽  
Vol 10 (39) ◽  
pp. 5324-5332 ◽  
Author(s):  
Sami Zaidi ◽  
Shanmugam Thiyagarajan ◽  
Abdelkader Bougarech ◽  
Fouzia Sebti ◽  
Souhir Abid ◽  
...  
Keyword(s):  
Optical Properties ◽  
Ethylene Terephthalate ◽  
Transparent Films ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
First Time

Transparent films of poly(ethylene terephthalate)-co-(ethylene 2,4-furandicarboxylate)s (PET-co-2,4-PEFs) were developed here for the first time, exploring the ability of 2,4-FDCA to impart excellent optical properties to the polymers thereof.

scholarly journals Isothermal Crystallization Kinetics of Poly(ethylene terephthalate) Copolymerized with Various Amounts of Isosorbide

2020 ◽  
Vol 10 (3) ◽  
pp. 1046 ◽  
Author(s):  
Nicolas Descamps ◽  
Florian Fernandez ◽  
Pierre Heijboer ◽  
René Saint-Loup ◽  
Nicolas Jacquel
Keyword(s):  
Isothermal Crystallization ◽  
Ethylene Terephthalate ◽  
Systematic Investigation ◽  
Crystallization Time ◽  
Isothermal Crystallization Kinetics ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Half Crystallization Time ◽  
First Time ◽  
Kinetics Of

Poly(ethylene-co-isosorbide terephthalate) (PEIT) copolyesters could be used in various applications depending on their ability to crystallize. Moreover, the possibility to carry out solid-state post-condensation (SSP) is conditioned by its ability to sufficiently crystallize. The present study, thus, gives a systematic investigation of isothermal crystallization of these statistical copolyesters with isosorbide contents ranging from 4.8 to 20.8 mol.%. For each copolyester composition, the lowest isothermal half crystallization times and the highest Avrami constant (K) were obtained around 170 °C. Over the range of composition that was studied, both melting points and melting enthalpies decreased with increasing amounts of isosorbide (from 250 to 207 °C and from 55 to 28 J/g, respectively). On the contrary, half crystallization time displayed an exponential increase when increasing isosorbide contents in the studied range. Finally, structural and thermal analysis of PIT homopolyester are reported for the first time, showing that only ET moieties crystallized when PEIT was subjected to isothermal crystallization at 170 °C.

scholarly journals Synthesis, Thermal Properties and Decomposition Mechanism of Poly(Ethylene Vanillate) Polyester

Polymers ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1672 ◽  
Author(s):  
Alexandra Zamboulis ◽  
Lazaros Papadopoulos ◽  
Zoi Terzopoulou ◽  
Dimitrios N. Bikiaris ◽  
Dimitra Patsiaoura ◽  
...  
Keyword(s):  
Crystallization Behavior ◽  
Ethylene Terephthalate ◽  
Raw Materials ◽  
Degradation Mechanism ◽  
Environmental Issues ◽  
Equilibrium Melting Temperature ◽  
Entropy Of Fusion ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
First Time

Plastics are perceived as modern and versatile materials, but their use is linked to numerous environmental issues as their production is based on finite raw materials (petroleum or natural gas). Additionally, their low biodegradability results in the accumulation of microplastics. As a result, there is extensive interest in the production of new, environmentally friendly, bio-based and biodegradable polymers. In this context, poly(ethylene vanillate) (PEV) has a great potential as a potentially bio-based alternative to poly(ethylene terephthalate); however, it has not yet been extensively studied. In the present work, the preparation of PEV is reported. The enthalpy and the entropy of fusion of the pure crystalline PEV have been estimated for the first time. Additionally, the equilibrium melting temperature has also been calculated. Furthermore, the isothermal and non-isothermal crystallization behavior are reported in detail, and new insights on the thermal stability and degradation mechanism of PEV are given.

The use of intermediates obtained from aminoglycolysis of waste poly(ethylene terephthalate) (PET) for the synthesis of water-reducible alkyd resin

2013 ◽  
Vol 91 (5) ◽  
pp. 357-363 ◽  
Author(s):  
Işıl Acar ◽  
Ayça Bal ◽  
Gamze Güçlü
Keyword(s):  
Thermal Degradation ◽  
Ethylene Terephthalate ◽  
Film Properties ◽  
Alkyd Resins ◽  
Pet Bottles ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Physical And Chemical ◽  
First Time ◽  
Constant System

In this study, depolymerization products obtained from an aminoglycolysis reaction of postconsumer poly(ethylene terephthalate) (PET) bottles were used for the synthesis of water-reducible alkyd resins for the first time. We also aimed to reduce the amount of amine using aminoglycolysis products of PET having amine end groups for the neutralization of alkyds in this work. Alkyds formulated to have an oil content of 50% were prepared with glycerine (G), ethylene glycol (EG), fatty acid (FA), and phthalic anhydride (PA) or aminoglycolysis depolymerization products (ADP). The “K alkyd constant system” was used for the formulation calculations of the alkyd resins. The K constant was 1.1 and the ratio of basic equivalents to acid equivalents (R) was 1.15. Physical and chemical film properties and thermal degradation stabilities of these alkyd resins were investigated. According to the results of surface coating tests, the properties of the waste PET-based alkyd resins were found to be compatible with the properties of the reference resins. In addition, thermal degradation stabilities of the water-reducible alkyd resins prepared by ADP were better than that of the reference resin. As a result, we concluded that aminoglycolysis products of waste PET are suitable for manufacturing water-reducible alkyd resins. Furthermore, the amount of amine used for the neutralization stage of preparing water-reducible resin was reduced by 50% using aminoglycolysis products having an amine end group.

Nanostructured ZnO and CuI Thin Films on Poly(Ethylene Terephthalate) Tapes for UV-Shielding Applications

2020 ◽  
Vol 12 (3) ◽  
pp. 03007-1-03007-8
Author(s):  
N. P. Klochko ◽  
◽  
K. S. Klepikova ◽  
D. O. Zhadan ◽  
V. R. Kopach ◽  
...  
Keyword(s):  
Thin Films ◽  
Ethylene Terephthalate ◽  
Uv Shielding ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene
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