Properties of Epoxy Compositions Cured by Aminolytic Splitting Products of a Secondary Polyethylene Terephthalate and Polycarbonate

Alikin, M. B.; Alekseeva, K. D.; Panfilov, D. A.; Dvorko, I. M.; Lavrov, N. A.

doi:10.1007/s11029-022-10060-z

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…The authors proposed the accelerative nature of the EG side product, and the terephthalicamide-diamine main products during the epoxy curing reaction. Recently, Alikin et al [262] also showed that ED-20 epoxy-diane resin cured by amine derivatives from PET and PC waste presented enhanced mechanical and physical properties. In another upcycling attempt, Chan et al [263] fabricated hydrogels through a two-step green process: aminolysis of PET waste and cross-linking of water-soluble poly(amidoamines) derivatives and ethylene glycol diglycidyl ether (EGDE).…”

Section: Depolymerisation To Monomersmentioning

confidence: 99%

Recent Trends of Recycling and Upcycling of Polymers and Composites: A Comprehensive Review

Podara,

Termine,

Modestou

et al. 2024

Recycling

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This review article gathers the most recent recycling technologies for thermoset and thermoplastic polymers. Results about existing experimental procedures and their effectiveness are presented. For thermoset polymers, the review focuses mainly on fibre-reinforced polymer composites, with an emphasis on epoxy-based systems and carbon/glass fibres as reinforcement, due to the environmental concerns of their end-of-life management. Thermal processes (fluidised bed, pyrolysis) and chemical processes (different types of solvolysis) are discussed. The most recent combined processes (microwave, steam, and ultrasonic assisted techniques) and extraordinary recycling attempts (electrochemical, biological, and with ionic liquids) are analysed. Mechanical recycling that leads to the downgrading of materials is excluded. Insights are also given for the upcycling methodologies that have been implemented until now for the reuse of fibres. As for thermoplastic polymers, the most state-of-the-art recycling approach for the most common polymer matrices is presented, together with the appropriate additivation for matrix upcycling. Mechanical, chemical, and enzymatic recycling processes are described, among others. The use of fibre-reinforced thermoplastic composites is quite new, and thus, the most recent achievements are presented. With all of the above information, this extensive review can serve as a guide for educational purposes, targeting students and technicians in polymers recycling.

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Section: Depolymerisation To Monomersmentioning

confidence: 99%

Recent Trends of Recycling and Upcycling of Polymers and Composites: A Comprehensive Review

Podara,

Termine,

Modestou

et al. 2024

Recycling

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“…Several attempts to combine thermoplastic BisA PC and carbon fiber have been reported [11], but research on thermosetting PC is quite limited. Lavrov et al reported the epoxy compositions cured by products of the reaction of aminolysis from the secondary BisA PC (household waste with polyethylene polyamine [12]. Li et al reported the synthesis and properties of benzocyclobutene (BCB) -functionalized thermosetting PC via copolymerization with BCBfunctionalized bisphenol monomer, where The Td5 and char yield of the cured resin were improved to be 450°C and 33%, respectively [13].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Thermosetting Polycarbonate with Ethynyl Terminals

Shibasaki,

Shirata,

Oishi

2023

J. Photopol. Sci. Technol.

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Thermosetting bisphenol A-carbonate resins with ethynyl and phenylethynyl terminals were successfully developed via an activated transcarbonate reaction. The terminal transformation efficiency from OH into ethynyl function was 74 to 87% determined by 1 H NMR spectroscopy, and the resin was sufficiently crosslinked with annealing treatment over 240°C. The glass transition temperature increased from 109 to 162°C with the char yield of 26% at 800°C.

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“…Аминолитическое расщепление цепей ПЭТ происходит в результате нуклеофильной атаки преимущественно первичных аминогрупп на сложноэфирную связь, что приводит к образованию олигомеров и низкомолекулярных соединений. Продукты аминолиза могут в дальнейшем подвергаться химическим реакциям или модификации для получения таких материалов, как отвердители для эпоксидных смол [7,8,9], защитные покрытия [10], пластификаторы для поливинилхлорида [11,12], полиуретаны [13], мембраны для разделения газов [14], термоплавкий клей [15].…”

Section: Introductionunclassified

Production of polyesteramides based on recycled PET and low molecular weight amine

et al. 2023

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A method for the obtaining of polyesteramides based on recycled polyethylene terephthalate (PET) is presented. The process of aminolysis is studied by FTIR spectroscopy. The eff ect of increasing the duration of the aminolysis process and the amount of PET on the complex of technological properties of polyesteramides is shown. According to the test results, the developed polyesteramides can be used as hardeners for epoxy oligomers.

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Properties of Epoxy Compositions Cured by Aminolytic Splitting Products of a Secondary Polyethylene Terephthalate and Polycarbonate

Cited by 7 publications

References 6 publications

Recent Trends of Recycling and Upcycling of Polymers and Composites: A Comprehensive Review

Recent Trends of Recycling and Upcycling of Polymers and Composites: A Comprehensive Review

Synthesis of Thermosetting Polycarbonate with Ethynyl Terminals

Production of polyesteramides based on recycled PET and low molecular weight amine

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