Sub- and supercritical glycolysis of polyethylene terephthalate (PET) into the monomer bis(2-hydroxyethyl) terephthalate (BHET)
Imran, M; Kim, BK; Han, M; Cho, BG; Kim, DH
| HERO ID | 1118987 |
|---|---|
| In Press | No |
| Year | 2010 |
| Title | Sub- and supercritical glycolysis of polyethylene terephthalate (PET) into the monomer bis(2-hydroxyethyl) terephthalate (BHET) |
| Authors | Imran, M; Kim, BK; Han, M; Cho, BG; Kim, DH |
| Journal | Polymer Degradation and Stability |
| Volume | 95 |
| Issue | 9 |
| Page Numbers | 1686-1693 |
| Abstract | Sub- and supercritical glycolysis of polyethylene terephthalate (PET) with ethylene glycol (EG) to bis(2-hydroxyethyl) terephthalate (BHET) was investigated for the purpose of developing a PET recycling process. Supercritical glycolysis was carried out at 450 degrees C and 15.3 MPa while subcritical glycolysis was carried out at 350 degrees C and 2.49 MPa or at 300 degrees C and 1.1 MPa. High yields (gt; 90%) of the monomer BHET were obtained in both super- and subcritical cases. For the same PET/EG weight ratio of about 0.06, the optimum reaction time was 30 min for supercritical glycolysis and 75 and 120 min for two cases of subcritical glycolysis. GPC, RP-HPLC, (1)H NMR and (13)C NMR, and DSC were used to characterize the polymer and reaction products. Supercritical glycolysis will be suitable to a process requiring a high throughput due to its short reaction time. (C) 2010 Elsevier Ltd. All rights reserved. |
| Doi | 10.1016/j.polymdegradstab.2010.05.026 |
| Wosid | WOS:000281369500031 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science 000281369500031 |
| Is Public | Yes |
| Keyword | PET; Supercritical; Subcritical; Glycolysis; Plastics recycling |
| Is Qa | No |