Hydrolytic depolymerization of PET in a microwave reactor

Mohammad Nahid Siddiqui; Dimitris S. Achilias; Halim Hamid Redhwi; Dimitris N. Bikiaris; Konstantinos Alexandros G. Katsogiannis; George P. Karayannidis

doi:10.1002/mame.201000050

Hydrolytic depolymerization of PET in a microwave reactor

Mohammad Nahid Siddiqui, Dimitris S. Achilias, Halim Hamid Redhwi, Dimitris N. Bikiaris, Konstantinos Alexandros G. Katsogiannis, George P. Karayannidis

Research output: Contribution to journal › Article › peer-review

89 Scopus citations

Abstract

Recycling of PET was examined using hydrolytic depolymerization in an alkaline solution under microwave irradiation. The reaction was carried out in a sealed microwave reactor in which the pressure and temperature were controlled and recorded. The main products were the monomers TPA and EG. The effect of reaction temperature, time, amount of PET and alkaline concentration on the degree of PET depolymerization and TPA recovery was investigated. Microwave irradiation was found to reduce the time needed to achieve a specific degradation of PET significantly, with almost complete depolymerization occurring in 30 min at 180 8C and only 46W of microwave power. Using a phase transfer catalyst (TOMAB) resulted in the same amount of unreacted PET but at significantly lower depolymerization temperatures.

Original language	English
Pages (from-to)	575-584
Number of pages	10
Journal	Macromolecular Materials and Engineering
Volume	295
Issue number	6
DOIs	https://doi.org/10.1002/mame.201000050
State	Published - 16 Jun 2010

Keywords

Hydrolysis
Microwave irradiation
Poly(ethylene terephthalate)
Recycling

ASJC Scopus subject areas

General Chemical Engineering
Polymers and Plastics
Organic Chemistry
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/mame.201000050

Cite this

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title = "Hydrolytic depolymerization of PET in a microwave reactor",

abstract = "Recycling of PET was examined using hydrolytic depolymerization in an alkaline solution under microwave irradiation. The reaction was carried out in a sealed microwave reactor in which the pressure and temperature were controlled and recorded. The main products were the monomers TPA and EG. The effect of reaction temperature, time, amount of PET and alkaline concentration on the degree of PET depolymerization and TPA recovery was investigated. Microwave irradiation was found to reduce the time needed to achieve a specific degradation of PET significantly, with almost complete depolymerization occurring in 30 min at 180 8C and only 46W of microwave power. Using a phase transfer catalyst (TOMAB) resulted in the same amount of unreacted PET but at significantly lower depolymerization temperatures.",

keywords = "Hydrolysis, Microwave irradiation, Poly(ethylene terephthalate), Recycling",

author = "Siddiqui, \{Mohammad Nahid\} and Achilias, \{Dimitris S.\} and Redhwi, \{Halim Hamid\} and Bikiaris, \{Dimitris N.\} and Katsogiannis, \{Konstantinos Alexandros G.\} and Karayannidis, \{George P.\}",

year = "2010",

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doi = "10.1002/mame.201000050",

language = "English",

volume = "295",

pages = "575--584",

journal = "Macromolecular Materials and Engineering",

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TY - JOUR

T1 - Hydrolytic depolymerization of PET in a microwave reactor

AU - Siddiqui, Mohammad Nahid

AU - Achilias, Dimitris S.

AU - Redhwi, Halim Hamid

AU - Bikiaris, Dimitris N.

AU - Katsogiannis, Konstantinos Alexandros G.

AU - Karayannidis, George P.

PY - 2010/6/16

Y1 - 2010/6/16

N2 - Recycling of PET was examined using hydrolytic depolymerization in an alkaline solution under microwave irradiation. The reaction was carried out in a sealed microwave reactor in which the pressure and temperature were controlled and recorded. The main products were the monomers TPA and EG. The effect of reaction temperature, time, amount of PET and alkaline concentration on the degree of PET depolymerization and TPA recovery was investigated. Microwave irradiation was found to reduce the time needed to achieve a specific degradation of PET significantly, with almost complete depolymerization occurring in 30 min at 180 8C and only 46W of microwave power. Using a phase transfer catalyst (TOMAB) resulted in the same amount of unreacted PET but at significantly lower depolymerization temperatures.

AB - Recycling of PET was examined using hydrolytic depolymerization in an alkaline solution under microwave irradiation. The reaction was carried out in a sealed microwave reactor in which the pressure and temperature were controlled and recorded. The main products were the monomers TPA and EG. The effect of reaction temperature, time, amount of PET and alkaline concentration on the degree of PET depolymerization and TPA recovery was investigated. Microwave irradiation was found to reduce the time needed to achieve a specific degradation of PET significantly, with almost complete depolymerization occurring in 30 min at 180 8C and only 46W of microwave power. Using a phase transfer catalyst (TOMAB) resulted in the same amount of unreacted PET but at significantly lower depolymerization temperatures.

KW - Hydrolysis

KW - Microwave irradiation

KW - Poly(ethylene terephthalate)

KW - Recycling

UR - https://www.scopus.com/pages/publications/77953989300

U2 - 10.1002/mame.201000050

DO - 10.1002/mame.201000050

M3 - Article

AN - SCOPUS:77953989300

SN - 1438-7492

VL - 295

SP - 575

EP - 584

JO - Macromolecular Materials and Engineering

JF - Macromolecular Materials and Engineering

IS - 6

ER -

Hydrolytic depolymerization of PET in a microwave reactor

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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