Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Transesterification Kinetics of Bis(2-Hydroxyethyl) Terephthalate with 1,4-Butandiol

Bis(2-Hydroxyethyl) Terephthalate와 1,4-Butanediol의 에스테르 교환 반응

  • Jeon, Hyeongcheol (Department of Chemical Engineering and Applied Chemistry, Chungnam National University) ;
  • Han, Myungwan (Department of Chemical Engineering and Applied Chemistry, Chungnam National University)
  • 전형철 (충남대학교 공과대학 응용화학공학과) ;
  • 한명완 (충남대학교 공과대학 응용화학공학과)
  • Received : 2017.08.01
  • Accepted : 2017.09.14
  • Published : 2018.02.01
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Abstract

Transesterification of BHET (Bis (2-Hydroxyethyl) Terephthalate), monomer of PET (Poly Ethylene Terephthalate) to BHBT (Bis (4-Hydroxybutyl Terephthate), monomer of PBT (Poly Butylene Terephthalate), using 1,4-BD (1,4-butanediol) were investigated. Zinc acetate was used as a catalyst for the reaction. Amounts of BHET, EG, and THF (Tetrahydrofuran) in a batch reactor were measured for determining the reaction kinetics. Mathematical models of the batch reactor for the transesterification reaction were developed and used to characterize the reaction kinetics and the composition distribution of the reaction products. Model predictions for the transesterification were in good agreement with experimental results.

본 연구에서는 PET (Poly Ethylene Terephthalate)의 단량체인 BHET (bis (2-Hydroxyethyl) Terephthalate)와 1,4-BD(1,4-Butanediol)의에스테르교환반응을활용하여 PBT (Poly Butylene Terephthalate)의단량체인 BHBT (Bis (4-Hydroxybutyl Terephthate)를 생성하는 반응에 대하여 조사하였다. 이 반응의 촉매로 Zinc Acetate를 사용하였다. 회분식 반응기를 통하여 BHET, EG (Ethylene Glycol), THF (Tetrahydrofuran)의 양을 정량하여 반응 kinetics 모델을 구성하였다. 제시된 모델을 통하여 반응속도와 반응물의 조성 분포를 조사하였고, 이 모델의 예측 값과 실험 값들이 잘 일치함을 보였다.

Keywords

References

  1. Imran, M., Kim, B., Han, M., Cho, B. G. and Kim, D. H., "Suband Supercritical Glycolysis of Polyethylene Terephthalate (PET) Into the Monomer Bis(2-hydroxyethyl) Terephthalate(BHET)," Polymer Degradation and Stability, 95(9), 1686-1693(2010). https://doi.org/10.1016/j.polymdegradstab.2010.05.026
  2. Yoshioka, T. Grause, G. in Scheirs J. and Kaminsky, W., (Ed.), "Feedstock Recycling and Pyrolysis of Waste Plastics: Converting Waste Plastics into Diesel and Other Fuels," Chichester, UK: John Willey & Sons, 642-643(2006).
  3. Imran, M., Lee, K. G., Imtiaz, Q., Kim, B. K., Han, M., Cho, B. G. and Kim, D. H., "Metal-Oxide-Doped Silica Nanopaticles for the Catalytic Glycolysis of Polyethylene Terephthalate," Journal of Nanoscience and Nanotechnology, 11(1), 824-828(2011). https://doi.org/10.1166/jnn.2011.3201
  4. Han, M., Kang, K. and Song, J., "Chemical Recycling Technology from Polyester Wastes," Elastomers and Composites, 47(2), 96-103(2012). https://doi.org/10.7473/EC.2012.47.2.96
  5. Achilias, D. S. and Karayannidis, G. P., "The Chemical Recycling of PET in the Framework of Sustainable Development," Water Air Soil Pollute:Focus 4(4-5), 385-96(2004). https://doi.org/10.1023/B:WAFO.0000044812.47185.0f
  6. Kim, S. and Han, M., "A Methanolysis Process for Recycling Polyester Oligomer Waste," Korean Chem. Eng. Res., 42(1), 53-58(2004).
  7. Kim, J., Jeong, D., Son, C., Lee, Y., Kim, E. and Moon, I., "Synthesis and Applications of Unsaturated Polyester Resins Based on PET Waste," Korean J. Chem. Eng., 24, 1076(2007). https://doi.org/10.1007/s11814-007-0124-5
  8. Hwang, H., Kim, B., Woo, D. and Han, M., "Depolymerization of PET by Ethylene Glycol," Korean Chem. Eng. Res., 47(6), 683-687(2009).
  9. Jo, S., Kim. G., Cho. M., Han. M. and Kang, K., "Feedstock Recycling Technology from Polyester Wastes," Korean Chem. Eng. Res., 52(1), 17-25(2014). https://doi.org/10.9713/kcer.2014.52.1.17
  10. Kulkarni, N. G., Avadhani, C. V. and Sivaram, S., "Efficient Method for Recycling Poly(ethylene terephthalate) to Poly(butylene terephthalate) Using Transesterification Reaction," Journal of Applied Polymer Science, 91(6), 3720-3729(2004). https://doi.org/10.1002/app.13453
  11. Mansour, S. H. and Ikladious, N. E., "Depolymerization of Poly(ethylene terephthalate) Waste Using 1,4-Butanediol and Triethylene Glycol," Polymer Testing, 21(5), 497-505(2002). https://doi.org/10.1016/S0142-9418(01)00115-5
  12. Cho, M., Yang, J., Noh, S., Joe, H. and Han, M., "Production of PBT(polybutylene terephthalate) Oligomer from Recycled PET (polyethylene terephthalate)," Korean Chem. Eng. Res., 54(4), 437-442(2016). https://doi.org/10.9713/kcer.2016.54.4.437
  13. Barandiaran, M. J. and Asua, J. M., "Kinetic Analysis of the Transesterification of Dimethyl Terephthalate with Ethylene Glycol in a Semibatch Reactor," Journal of Polymer Science, 27(13), 4241-4255(1989).
  14. Barandiaran, M. J. and Asua, J. M., "Analysis of Oligomerization in the Reaction of Dimethyl Terephthalate with Ethylene glycol," Polymer, 31(7), 1352-1360(1990). https://doi.org/10.1016/0032-3861(90)90230-V