Hydrolytic Depolymerization of Poly(Ethylene Terephthalate) Waste at High Temperature Under Autogenous Pressure

The effect of dimethyl-5-sodiosulfoisophthalate, SIP, on poly(ethylene terephthalate), PET, crystallization has been studied using in situ high-temperature x-ray diffraction, HTXRD. At low levels of SIP modification, PET-like crystallinity was observed. At high SIP levels, clustering of polyester ionomers was observed and crystallization was significantly suppressed. The HTXRD data along with differential scanning calorimetry, DSC, and small angle x-ray scattering, SAXS, indicate that the change from bulk crystallization to bulk ionomer formation occurred when 8-12 mol% of the diester linkages contained SIP.

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Study on the double cold crystallization peaks of poly(ethylene terephthalate) (PET): 2. Samples isothermally crystallized at high temperature

European Polymer Journal ◽

10.1016/s0014-3057(98)00179-7 ◽

1999 ◽

Vol 35 (4) ◽

pp. 739-742 ◽

Cited By ~ 12

Author(s):

Zhu Pingping ◽

Ma Dezhu

Keyword(s):

High Temperature ◽

Ethylene Terephthalate ◽

Cold Crystallization ◽

Poly Ethylene Terephthalate ◽

Poly Ethylene

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Real-Time Evolution of the Lamellar Organization of Poly(ethylene terephthalate) during Crystallization from the Melt: High-Temperature Atomic Force Microscopy Study

Macromolecules ◽

10.1021/ma010809b ◽

2001 ◽

Vol 34 (26) ◽

pp. 8944-8952 ◽

Cited By ~ 76

Author(s):

D. A. Ivanov ◽

Z. Amalou ◽

S. N. Magonov

Keyword(s):

Atomic Force Microscopy ◽

High Temperature ◽

Ethylene Terephthalate ◽

Microscopy Study ◽

Atomic Force Microscopy Study ◽

Force Microscopy ◽

Atomic Force ◽

Poly Ethylene Terephthalate ◽

Poly Ethylene ◽

Crystallization From The Melt

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Hydrolysis of poly(ethylene terephthalate) and poly(ethylene 2,6-naphthalene dicarboxylate) using water at high temperature: Effect of proton on low ethylene glycol yield

Catalysis Today ◽

10.1016/j.cattod.2005.10.040 ◽

2006 ◽

Vol 111 (3-4) ◽

pp. 297-301 ◽

Cited By ~ 40

Author(s):

Osamu Sato ◽

Kunio Arai ◽

Masayuki Shirai

Keyword(s):

High Temperature ◽

Ethylene Glycol ◽

Temperature Effect ◽

Ethylene Terephthalate ◽

Poly Ethylene Terephthalate ◽

Poly Ethylene ◽

Hydrolysis Of ◽

High Temperature Effect

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Hydrolytic depolymerization of poly(ethylene terephthalate) under microwave irradiation

Journal of Applied Polymer Science ◽

10.1002/app.21231 ◽

2004 ◽

Vol 95 (3) ◽

pp. 719-723 ◽

Cited By ~ 31

Author(s):

Lixin Liu ◽

Dong Zhang ◽

Lijia An ◽

Huayang Zhang ◽

Yiguang Tian

Keyword(s):

Microwave Irradiation ◽

Ethylene Terephthalate ◽

Poly Ethylene Terephthalate ◽

Poly Ethylene ◽

Hydrolytic Depolymerization

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Energy Efficiency Analysis of PET Hydrolyzed by Different Ways of Microwave Irradiation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1078.114 ◽

2014 ◽

Vol 1078 ◽

pp. 114-117

Author(s):

Mi Mi Wang ◽

Na Liu ◽

Zhi De Liu ◽

Dong Zhang

Keyword(s):

Energy Efficiency ◽

Microwave Irradiation ◽

Ethylene Terephthalate ◽

Energy Utilization ◽

Poly Ethylene Terephthalate ◽

Continuous Radiation ◽

Poly Ethylene ◽

Radiation Time ◽

Hydrolytic Depolymerization ◽

Total Reaction Time

The effect of microwave irradiation way on hydrolytic depolymerization of poly (ethylene terephthalate) (PET) was studied at 175°C, 180°C and 185°C. Based on this study, an additional experiment that the intermittent radiation time was one tenth of total reaction time (intermittent radiation (1/10)) was conducted to research the microwave energy utilization. The results showed that the energy efficiency increased as the temperature rose. And the energy utilization of intermittent radiation (1/10) was 16.7% higher than that of the continuous radiation at 175°C.

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