Phase equilibria of binary, ternary and quaternary systems for polymerization/depolymerization of polycarbonate

Margon, V Vid; Agarwal, US Uday; Peters, CJ Cor; Wit, de G Gert; Bailly, Christian; Kasteren, van Jmn Han; Lemstra, PJ Piet

doi:10.1016/j.supflu.2004.10.008

Cited by 15 publications

(8 citation statements)

References 9 publications

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“…A mixture of phenol, diphenyl carbonate (PhOCOOPh, DPC) and BPA was obtained after the reaction of PC with phenol . The obtained components were separated using supercritical carbon dioxide by semi‐batch extraction process.…”

Section: Chemical Degradation Of Polycarbonate Waste Materialsmentioning

confidence: 99%

Chemical Degradation of Poly(bisphenol A carbonate) Waste Materials: A Review

2018

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Plastics are indispensable and integral part of our daily life. Each year, we generate tonnes of plastics waste. Poly(bisphenol A carbonate) has created a space for itself in the plastic industry due to its high performance properties. The high rate of production created a major challenge in its management after use or becoming as waste. In this brief review, we have described the chemical degradation of poly(bisphenol A carbonate) and the use of catalyst and reagents. Some of the most utilized chemical degradation methods like alcoholysis, hydrolysis and aminolysis have been explained in detail. The chemical reactions involved in the degradation process have also been discussed.

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Section: Chemical Degradation Of Polycarbonate Waste Materialsmentioning

confidence: 99%

Chemical Degradation of Poly(bisphenol A carbonate) Waste Materials: A Review

2018

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“…It was found that the glycolysis of polycarbonate proceeded much in the same way as the methanolysis of PET [96]. Margon et al [109,110] investigated the equilibrium conditions of the polycarbonate decomposition products diphenylcarbonate (DPC) and BPA after the degradation of polycarbonate in phenol, as well as the extraction of these products in supercritical carbon dioxide. The Peng-Robinson equation of state (PR EOS) binary interaction parameters of the systems DPC-carbon dioxide, BPA-carbon dioxide, phenol-DPC, phenol-PBA, and DPC-BPA were used to develop a model of the tertiary system phenol-DPC-BPAcarbon dioxide.…”

Section: Chemolysis and Solvent Processesmentioning

confidence: 99%

Feedstock recycling of waste polymeric material

Grause

Buekens

Sakata

et al. 2011

J Mater Cycles Waste Manag

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The first International Symposium on Feedstock Recycling of Polymeric Materials (ISFR) was hosted in 1999 in Sendai, Japan. Since then, the ISFR has been held five times in different places in Asia and Europe. Each of these conferences focused on special issues covered by the Journal of Material Cycles and Waste Management. The topics included thermal processes with and without catalysts, wet processes in various solvents, the dehydrochlorination of PVC, mechanical recycling and separation techniques, as well as the treatment of biomaterials. This review is a compilation of the most interesting and important developments discussed at the ISFR during the last decade.

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“…Accordingly, their mass transfer rates approach those in gases, while solvation properties similar to conventional liquid solvents . The depolymerization reactions of common polymers such as polycarbonate (PC) , poly(ethylene terephthalate) (PET) , poly(trimethylene terephthalate) (PTT) , poly(butylene terephthalate) (PBT) , polyimide (PI) and polyethylene (PE) have been studied. However, few studies have focused on depolymerization of PEN , and provided quite limited information.…”

Section: Introductionmentioning

confidence: 99%

Depolymerization of poly(ethylene naphthalate) in fused silica capillary reactor and autoclave reactor from 240 to 280°C in subcritical water

Bei

Wang

et al. 2017

Polymer Engineering & Sci

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Depolymerization of poly(ethylene naphthalate) (PEN) in subcritical water was performed in a fused silica capillary reactor (FSCR) and an autoclave reactor. The phase behaviors of PEN in water during the heating-cooling process in the FSCR were observed under microscope and images were captured by digital camera. Reaction conditions for PEN hydrolysis in the autoclave reactor were chosen based on the experimental results obtained from the FSCR. Under autogenous pressures in the autoclave reactor, the effects of the water/PEN mass ratio (8.0 g/1.0 g to 16.0 g/1.0 g), reaction temperature (240-2808C) and reaction time (5-60 min) on the depolymerization yield and products yields were investigated. The main products of depolymerization were identified and quantified as 2,6naphthalene dicarboxylic acid (2,6-NDA) and ethylene glycol (EG). PEN was completely depolymerized at 2608C in 60 min with an optimal water/PEN mass ratio of 12.0 g/1.0 g (12:1). The yields of 2,6-NDA and EG were optimized to 83.1% and 79.7%, respectively. Reaction kinetics analysis showed that the PEN depolymerization in subcritical water was first-order and the activation energy was 95 kJ mol 21 . Additionally, a reaction pathway was proposed based on the experimental results. POLYM. ENG. SCI.,

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Phase equilibria of binary, ternary and quaternary systems for polymerization/depolymerization of polycarbonate

Cited by 15 publications

References 9 publications

Chemical Degradation of Poly(bisphenol A carbonate) Waste Materials: A Review

Chemical Degradation of Poly(bisphenol A carbonate) Waste Materials: A Review

Feedstock recycling of waste polymeric material

Depolymerization of poly(ethylene naphthalate) in fused silica capillary reactor and autoclave reactor from 240 to 280°C in subcritical water

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