Chemical Recycling of PET Waste with Multifunctional Pentaerythrytol in the Melt State

Mendes, Luís Claudio; Dias, Marcos L.; Rodrigues, Tathiane Cordeiro

doi:10.1007/s10924-010-0276-y

Cited by 18 publications

(12 citation statements)

References 21 publications

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“…Chemical recycling can be realized by several processes including aminolysis, 5–7 glycolysis, 8–10 hydrolysis 10–12 and alcoholysis. 13,14 Glycolysis is carried out using different glycols like ethylene glycol (EG), 15,16 diethylene glycol (DEG), 17,18 triethylene glycol, 1, 4-butanediol, 19 propylene glycol etc. 20 The catalyst used for this purpose is mainly metal acetate.…”

Section: Introductionmentioning

confidence: 99%

Effect of different concentration of rapeseed oil and recycled poly (ethylene terephthalate) in polyols for rigid polyurethane foams

Ivdre

Fridrihsone

Āboliņš

et al. 2016

Journal of Cellular Plastics

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In this research, polyols from rapeseed oil and recycled poly(ethylene terephthalate) were synthesized by two-step continuous synthesis with a different rapeseed oil and poly(ethylene terephthalate) concentration. All rapeseed oil/poly(ethylene terephthalate) polyols showed complete compatibility with blowing agent Solkane 365/227. The resulting polyols were used to prepare rigid polyurethane foams which were characterized with various techniques for determination of their physical, mechanical and thermal insulation properties. The effect of rapeseed oil and poly(ethylene terephthalate) concentrations in polyols on the characteristics of rigid polyurethane foams was investigated. The results showed that obtained rigid polyurethane foams were suitable for thermal insulation appliance. Also, the potential use of rapeseed oil as raw material combined with poly(ethylene terephthalate) to synthesize polyols with good compatibility with blowing agent was confirmed.

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Section: Introductionmentioning

confidence: 99%

Effect of different concentration of rapeseed oil and recycled poly (ethylene terephthalate) in polyols for rigid polyurethane foams

Ivdre

Fridrihsone

Āboliņš

et al. 2016

Journal of Cellular Plastics

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“…The PET/PENT (60/40) blend containing 0.5 wt% zinc acetate catalyst was prepared by melt processing in an Haake Rheomix 600 internal mixer, at 250˚C, 60 rpm, for 10 minutes. Before processing, PET flakes were previously dried at 120˚C, for 4 hours [8].…”

Section: Oligomer Preparationmentioning

confidence: 99%

“…Waste disposal is a main concern of society, prompting actions by industry and research centers [5][6][7]. Recently, an article on PET waste oligomerization through the action of polyfunctional alcohol-pentaerythritol was published [8].…”

Section: Introductionmentioning

confidence: 99%

PET Oligomer Waste to Modify CAP Characteristics

Mendes¹,

Dias²,

Pereira³

et al. 2012

MSA

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To develop an improved method of reusing poly(ethylene terephthalate) (PET) waste in the production chain, it was chemically modified with pentaerythritol (PENTE), resulting in PET/PENTE (60/40) oligomer. This was added to petroleum asphalt cement (CAP) in different proportions-5, 10 and 20 wt%-as a modifier of bitumen characteristics. The mixture was evaluated by thermogravimetry (TG/DTG), differential scanning calorimetry (DSC), infrared spectroscopy (FT-IR), optical microscopy (OM) and the adhesion-peel test. The oligomer enhanced substantially the asphalt thermal stability-T onset . OM images showed strong compatibility between components and PET's amorphization. PET oligomer increased CAP's wettability and the mixture presented cohesive fracture through the peel test. The mixture has excellent potential as paving material.

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“…Some of the most commonly employed recycled polymers are discussed. Recycled polyethylene terephthalate (PET) has been principally used in road construction as aggregate substitute [41,42], and as bitumen modifier and anti-stripping agent if chemically Introduction of recycled polyurethane foam in mastic asphalt processed [43,44]. In Stone Matrix Asphalt, recycled PET has been found to increase resistance to permanent deformation and stiffness [45,46].…”

Section: Introductionmentioning

confidence: 99%

Mastic asphalt modified with recycled polyurethane foam

2018

JCE

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Lijevani asfalt s dodatkom reciklirane poliuretanske pjene U radu se analizira mogućnost upotrebe reciklirane poliuretanske pjene kao veziva/ modifikatora za lijevani asfalt. Rezultati pokazuju da se tvrđi bitumen dobiva s povećanjem poliuretanske pjene do 5 % kada obradivost mješavine postaje nepovoljna. Proizvedena je mješavina lijevanog asfalta s 4 % poliuretanske pjene u bitumenu. Zabilježena je manja vrijednost dubine utiskivanja u usporedbi s uzorkom bez dodataka te je ustanovljeno da se modificirani lijevani asfalt može koristiti na cestama s teškim prometnim opterećenjem. Dobiveni rezultati pokazuju da postoje dobri izgledi za širu primjenu ovog otpadnog polimera.

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Chemical Recycling of PET Waste with Multifunctional Pentaerythrytol in the Melt State

Cited by 18 publications

References 21 publications

Effect of different concentration of rapeseed oil and recycled poly (ethylene terephthalate) in polyols for rigid polyurethane foams

Effect of different concentration of rapeseed oil and recycled poly (ethylene terephthalate) in polyols for rigid polyurethane foams

PET Oligomer Waste to Modify CAP Characteristics

Mastic asphalt modified with recycled polyurethane foam

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