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IJCT Vol.14(2) [March 2007] >


Title: Alkaline hydrolysis of poly(ethylene terephthalate) in presence of a phase transfer catalyst
Authors: Das, J
Halgeri, A B
Sahu, V
Parikh, P A
Keywords: Poly(ethylene terephthalate)
Benzalkonium chloride
Phase transfer catalyst
Issue Date: Mar-2007
Publisher: CSIR
IPC CodeC08F4/00, C08G77/445
Abstract: Poly(ethylene terephthalate) (PET) powder was hydrolyzed at atmospheric pressure in 5-10 wt% aqueous NaOH at 95°C for 100 min using some phase transfer catalysts (PTC) with an intention to recover the starting monomers from the waste PET. The intent behind attempting new PTC was to carry out the reaction at milder conditions than those reported in the literature. One of the monomers, terephthalic acid (TPA) was produced in the presence of a PTC during the alkaline hydrolysis of PET. The TPA yield agreed with the degree of hydrolysis of PET. Benzalkonium chloride (BKC) was found to be the most effective catalyst among the ones studied. Operating parameters such as NaOH concentration, catalyst concentration and reaction temperature were optimized.
Page(s): 173-177
ISSN: 0971–457X
Source:IJCT Vol.14(2) [March 2007]

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