A hot melt adhesive from polyester waste

Nevrekar, N. B.; Naik, Garima; Joshi, K. A.

doi:10.1163/156856187x00210

Cited by 3 publications

(1 citation statement)

References 1 publication

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“…Due to the high melting temperature of the adhesive, above 110 • C, limiting potential applications, the authors attempted to replace sebacic acid with succinic or adipic acid to lower the T m . However, those adhesives failed to adhere to metal [111].…”

Section: Polyester and Alkyd Resinsmentioning

confidence: 99%

Envisioning a BHET Economy: Adding Value to PET Waste

Westover,

Long

2023

Sustainable Chemistry

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Poly(ethylene terephthalate), the fifth most produced polymer, generates significant waste annually. This increased waste production has spurred interest in chemical and mechanical pathways for recycling. The shift from laboratory settings to larger-scale implementation creates opportunities to explore the value and recovery of recycling products. Derived from the glycolysis of PET, bis(2-hydroxyethyl) terephthalate (BHET) exhibits versatility as a depolymerization product and valuable monomer. BHET exhibits versatility and finds application across diverse industries such as resins, coatings, foams, and tissue scaffolds. Incorporating BHET, which is a chemical recycling product, supports higher recycling rates and contributes to a more sustainable approach to generating materials. This review illuminates the opportunities for BHET as a valuable feedstock for a more circular polymer materials economy.

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Section: Polyester and Alkyd Resinsmentioning

confidence: 99%

Envisioning a BHET Economy: Adding Value to PET Waste

Westover,

Long

2023

Sustainable Chemistry

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Zinc‐Catalyzed Depolymerization Reactions

Enthaler

2015

Zinc Catalysis

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A kinetic study of the hydrolytic degradation of polyethylene terephthalate at high temperatures

Campanelli

Kamal

Cooper

1993

J of Applied Polymer Sci

204

156

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SYNOPSISThe hydrolytic depolymerization of molten P E T in excess water was studied using a 2 L stirred pressure reactor at temperatures of 250,265, and 280°C. Rate constants for hydrolysis are calculated from the initial rate data. At initial water : PET charge ratios (w/w) exceeding 5.1, essentially complete depolymerization to monomer is possible at 265°C. At lower water: PET initial charges, an equilibrium is established. The equilibrium constants are calculated for 2 g water/g PET at three temperatures. A kinetic model is proposed to describe the hydrolysis reaction. The model is shown to fit experimental data and to yield good predictions for the equilibrium concentration of carboxyl groups. Carboxyl-group concentrations are measured using an end-group analysis technique. Potentiometric titrations are carried out in one of two solvent systems, dimethylpheno1:chloroform or dimethylsulfoxide, depending on the extent of hydrolysis. 0 1993 John Wiley & Sons, Inc.

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A hot melt adhesive from polyester waste

Cited by 3 publications

References 1 publication

Envisioning a BHET Economy: Adding Value to PET Waste

Envisioning a BHET Economy: Adding Value to PET Waste

Zinc‐Catalyzed Depolymerization Reactions

A kinetic study of the hydrolytic degradation of polyethylene terephthalate at high temperatures

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