Chemical Recycling of Polyurethane Foam Waste with Glycolysis by Using Zeolite Catalysts

Dinc M., YILDIZ M., AYTAÇ A.

KGK Kautschuk Gummi Kunststoffe, cilt.73, sa.7-8, ss.31-35, 2020 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 73 Sayı: 7-8
  • Basım Tarihi: 2020
  • Dergi Adı: KGK Kautschuk Gummi Kunststoffe
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Business Source Elite, Business Source Premier, Chemical Abstracts Core
  • Sayfa Sayıları: ss.31-35
  • Anahtar Kelimeler: Catalyst, Polyurethane (pu), Recycling, Zeolite
  • Kocaeli Üniversitesi Adresli: Evet

Özet

The effect of different ratios of Ca-zeolite and Na-zeolite catalysts in the glycolysis reaction for the chemical recovery of polyol from flexible polyurethane (PU) foams were investigated. The reaction of polyol conversion was carried out in the presence of PU foam with the catalyst for three hours at 190°C in the solvent. The decrease in urethane band intensity was determined by Fourier Transform Infrared Spectroscopy at 15 and 150 minutes. The conversion values of the recycled polyols were determined by gel permeation chromatography. PU foam was produced from the recycled polyols. Tensile and tear tests were performed on the foams. Thermal degradation of the foams were also investigated. Tensile properties of the foams significantly have affected using zeolite amount and types.