Erratum: A novel catalyst for the glycolysis of poly(ethylene terephthalate) K. Troev, G. Grancharov, R. Tsevi, I. Gitsov. Journal of Applied Polymer Science, 2003; 90: 1148–1152

Abstract

The original article to which this Erratum refers was published in . No abstract.

Synthesis and characterization of terephthalamides from poly(ethylene terephthalate) waste

“…The methanolysis of PET 12 occurs at 160 -240°C under a pressure of 20 -70 atm and provides an excellent yield of monomers. 13 The glycolysis of PET 14 involves the treatment of high-molecularweight PET with an excess of glycol 15 at 180°C in the presence of a catalyst 16 and produces hydroxyl-terminated short-chain fragments. These reactions are carried out at high temperatures and high pressures and thus consume a lot of energy.…”

Synthesis of Unsaturated Polyester Resins from PET Wastes: Effect of a Novel Co-catalytic System on Glycolysis and Polyesterification Reactions

“…Due to the importance of the above-mentioned reactions, many studies have been focused on glycolysis of PET wastes. Different important factors such as reaction conditions (temperature, pressure, glycolysis time) [9][10][11][12][13][14][15][16], kind of glycol [17][18][19][20][21][22][23][24] and reactants ratio [25][26][27] were investigated.…”

“…The activation energy for the uncatalyzed glycolysis is about 32 kcal/mol, whereas a proper catalyzed process requires less than 20 kcal/mol [25]. Thus, various metal-containing catalysts, such as zinc acetate [26][27][28][29][30], lead-, cobalt-or manganese acetate [26,29,30] and titanium alkoxides [31] or other titanium compounds [5,25] such as titanium (IV)-phosphate compound were used to facilitate the process. Zinc acetate is the most efficient catalyst in comparison with other metal-acetate compounds.…”

Chemical Recycling of PET by Glycolysis: Polymerization and Characterization of the Dimethacrylated Glycolysate

“…Halacheva and Novakov [30] have investigated the chemical structure of the oligoesters produced from PET glycolysis with diethylene glycol (DEG) and they have pointed out the existence of secondary hydroxyl groups of the products obtained at a large excess of DEG. Glycolysis of recycled PET was also investigated by Chen et al, [31,32] Mansour and Ikladius, [33] Michel et al [34] and Troev et al [35] Moreover, the mechanism of formation and applications of PET glycolysates have also been studied in the literature. [36][37][38][39] In our previous work, [18] PET was depolymerized with DEG at different DEG/PET molar ratios and the oligomers obtained were identified and subsequently used as raw materials for the synthesis of alkyd resins.…”