PET Depolymerization Catalyzed by Sulfates under Microwave Irradiation

Abstract:

Different sulfates were used as the catalysts of polyethylene terephthalate (PET) depolymerization under microwave of 250 watts, in which ZnSO₄ presented the best catalysis in this reaction, and the depolymerization degree (DPD) of PET was reached to 90 %. It was found that the depolymerization was occurred simultaneously on the surface and the internal parts of PET chips by the observation of scanning electron microscope (SEM) images. In addition, DPD increased with the improvement of the polarization forces of these sulfates.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 792-797
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.792
• Online since: July 2012
• Authors: Wei Lu Zhang, Xiao Ni Shi, Xin Zhang, Chun Hua Han, Dong Zhang
• Keywords: Depolymerization, Microwave, PET, Polarization Force, Sulfates Catalysts

References

[1] A. Kržan: J Appl Polym Sci Vol. 69 (1998), p.1115.

[2] U. Klun and A. Kržan: Polymer Vol. 41(2000), pp.4361-4365.

[3] G. Sivalingam, N. Agarwal and G. Madras, AIChE J Vol. 49 (2003), p.1821.

[4] D.S. Achilias, H.H. Redhwi, M.N. Siddiqui, A.K. Nikolaidis, D.N. Bikiaris and G.P. Karayannidis, J Appl Polym Sci Vol. 118 (2010), p.3066.

DOI: 10.1002/app.32737

[5] M.M.A. Nikje and F. Nazari, Adv Polym Technol Vol. 25 (2006), p.242.

[6] J.W. Chen, L.W. Chen and W.H. Cheng, Polym Int Vol. 48 (1999), p.885.

[7] S. Baliga and T.W. Wong, J Polym Sci A: Polym Chem Vol. 27 (1989), p.2071.

[8] U.R. Vaidya and V.M. Nadkarni, Ind Eng Chem Res Vol. 27 (1988), p.2056.

[9] S. Mishra and A.S. Goje, Polym Int Vol. 52 (2003), p.337.

[10] M.E. Cagiao, F.J.B. Calleja, C. Vanderdonckt and H.G. Zachmann, Polymer Vol. 34 (1993), p.2024.

[11] D.S. Achilias, G.P. Tsintzou, A.K. Nikolaidis, D.N. Bikiaris and G.P. Karayannidis, Polym Int Vol. 60 (2011), p.500.

DOI: 10.1002/pi.2976

[12] S.R. Shukla and A.M. Harad, Polym Degrad Stab Vol. 91 (2006), p.1850.

[13] L.X. Liu, D. Zhang, L.J. An, H.Y. Zhang and Y.G. Tian, J Appl Polmy Sci Vol. 95 (2005), p.719.

[14] D. Paszun and T. Spychaj, Ind Eng Chem Res Vol. 36 (1997), p.1373.

[15] A.S. Goje, S.A. Thakur, V.R. Diware, S.A. Patil, P.S. Dalwale and S. Mishra, Polym Plast Technol Eng Vol. 43 (2004), p.1093.

[16] J.D. Bernal and R.H. Fowler, J Chem Phys Vol. 1 (1933), p.515.

[17] K. Morokuma and L. Pedersen, J Chem Phys Vol. 48 (1968), p.3275.

[18] D. Paszun and T. Spychaj, Ind Eng Chem Res Vol. 36 (1997), p.1373

[19] T. Yoshioka, T. Sato and A. Okuwaki, J Appl Polym Sci Vol. 52 (1994), p.1353.

[20] J.B. Hubbard and L. Onsager, J Chem Phys Vol. 67 (1977), p.4850.

[21] S.E. Novick, P.C. Engelking, P.L. Jones, J.H. Futrell and W.C. Lineberger, J Chem Phys Vol. 70 (1979), p.2652.

[22] X.J. Wang, J. Yang, G.X. Li and G.L. Chen, China Plastics Industry Vol. 33 (2005), p.36.

[23] D.R. Baghurst and D.M.P. Mingos, J Chem Soc Chem Commun Vol. 9 (1992), p.674.

[24] K.X. Li, X.F. Song and D. Zhang, J Appl Polym Sci Vol. 109 (2008), p.1298.

[25] X.F. Song, S.Z. Zhang and D. Zhang, J Appl Polym Sci Vol.117 (2010), p.3155.

[26] R.D. Shannon, Acta Cryst A Vol. 32 (1976), p.751.