Aminolysis of polyethylene terephthalate

Zahn, Helmut; Pfeifer, Herbert

doi:10.1016/0032-3861(63)90055-7

Cited by 45 publications

(42 citation statements)

References 3 publications

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“…Zahn and Pfeifer30 carried out the aminolysis of PET with solutions of hydrazine, benzyl amine, ethylenediamine, hexamethylene diamine, piperidine, and aniline. They obtained different reaction products such as the diamides of terephthalic acid, which do not possess any potential for further chemical reactions.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of unsaturated polyesters based on the aminolysis of poly(ethylene terephthalate)

Elsaeed

Farag

2009

J of Applied Polymer Sci

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The depolymerization of poly(ethylene terephthalate) via an aminolysis process was studied. An excess of ethanol amine in the presence of sodium acetate as a catalyst was used to produce bis(2-hydroxyl ethylene) terephthalamide (BHETA). Unsaturated polyester (UP) resins were obtained by the reaction of BHETA with different long-chain dibasic acids such as decanedioic acid, tetradecanoic acid, and octadecanoic acid in conjunction with maleic anhydride as a source of unsaturation. The chemical structure of the UP resins was confirmed by 1 H-NMR. The vinyl ester resins were used as crosslinking agents for UP. The curing behavior and mechanical properties of the UP resins with vinyl ester were evaluated at different temperatures ranging from 25 to 55 C.

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Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of unsaturated polyesters based on the aminolysis of poly(ethylene terephthalate)

Elsaeed

Farag

2009

J of Applied Polymer Sci

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“…Limited but significant contributions have been reported on the aminolysis and ammonolysis of PET waste by various workers [11][12][13][14]. Soni et al [15] used methylamine, ethylamine and n-butylamine to the selective amminolysis of PET waste at room temperature.…”

Section: Introductionmentioning

confidence: 97%

Scanning electron microscopic study of hazardous waste flakes of polyethylene terephthalate (PET) by aminolysis and ammonolysis

Mittal

Soni

Dutt

et al. 2010

Journal of Hazardous Materials

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“…There is vast literature concerning chemical recycling of PET . Chemical recycling of PET includes hydrolysis , alcoholysis and aminolysis processes …”

Section: Introductionmentioning

confidence: 99%

PET wastes utilization in the synthesis of aliphatic–aromatic polyurethane elastomers

Mazurek

Tomczyk

Rokicki

2014

Polymers for Advanced Techs

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The presented work relates to the synthesis of polyurethane elastomers based on aliphatic–aromatic ester‐carbonate oligomerols obtained from poly(ethylene terephthalate) (PET) wastes and dimethyl carbonate as a source of carbonate units. A new method of transformation of PET waste into oligo(alkylene terephthalate)s in the alcoholysis process carried out with the use of azeotropic distillation was described and discussed. The obtained polyurethanes (PURs) exhibited excellent mechanical strength—75% higher tensile strength in comparison to that of polyurethanes based on aliphatic oligocarbonate diols, while maintaining similar elongation at break. It was confirmed that PURs maintain their elastomeric properties up to 42% concentration of aromatic units in the ester‐carbonate oligomerol when the mixture of terephthalate and isophthalate was used for the oligomerol synthesis. The new PURs also exhibited better thermal stability than those based on aliphatic carbonate oligomerols. Copyright © 2014 John Wiley & Sons, Ltd.

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Aminolysis of polyethylene terephthalate

Cited by 45 publications

References 3 publications

Synthesis and characterization of unsaturated polyesters based on the aminolysis of poly(ethylene terephthalate)

Synthesis and characterization of unsaturated polyesters based on the aminolysis of poly(ethylene terephthalate)

Scanning electron microscopic study of hazardous waste flakes of polyethylene terephthalate (PET) by aminolysis and ammonolysis

PET wastes utilization in the synthesis of aliphatic–aromatic polyurethane elastomers

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