Catalytic Recycling of Waste Polymer II. A Study of the Mechanism on the Catalytic Glycolysis of Flexible Polyurethane Foam

촉매를 이용한 폐고분자 물질의 자원화 II. 연질 폴리우레탄 폼의 글리콜분해반응 메카니즘

  • Park, Chong-Rae (Department of Material Chemical Engineering, Chonnam National University) ;
  • Kim, Sung-Ick (Department of Material Chemical Engineering, Chonnam National University) ;
  • Kim, Young-Chul (The Research Institute for Catalysis, Chonnam National University) ;
  • Park, Nam-Cook (The Research Institute for Catalysis, Chonnam National University) ;
  • Seo, Gon (The Research Institute for Catalysis, Chonnam National University)
  • 박종래 (전남대학교 공과대학 물질화학공학과) ;
  • 김성익 (전남대학교 공과대학 물질화학공학과) ;
  • 김영철 (전남대학교 촉매연구소) ;
  • 박남국 (전남대학교 촉매연구소) ;
  • 서곤 (전남대학교 촉매연구소)
  • Received : 1998.10.20
  • Accepted : 1999.01.30
  • Published : 1999.05.10

Abstract

Polyurethane foams are polymeric material with repeating groups of urethane and urea. When these are heated with ethylene glycol and K acetate catalyst at $200^{\circ}C$, the transesterification of them leads to soluble products. The mechanisms of the reaction were investigated from the molecular weight and the component distributions of the products by GPC and IR analysis. The degradation of the urethane groups was faster than that of urea groups in transesterification reaction. K acetate catalyst accelerated the rate of the transesterification because it had a high ionization tendency. Each reaction, using K or Sr acetate as a catalyst, progressed in the same reaction path but yielded different compositions in products because of the difference of the reaction rate.

Keywords

Glycolysis;Polyurethane;Recycling

Acknowledgement

Supported by : 한국학술진흥재단

References

  1. J. Reactive and Functional Polymers v.26 M. Modesti;F. Simioni;R. Munari;N. Baldoin
  2. Environmental Science and Technology v.10 G. A. Cambell;W. C. Meluch.
  3. J. Elatomers and Plastics v.24 M. Modesti;F. Simioni;S. A. Rienzi.
  4. Polymer Engineering and Science v.36 M. Modesti;F.Simioni.
  5. J. Cellular Polymer v.2 F. Simioni;S. Bisello
  6. J. Korea Ind. Eng. Chem. v.8 C. R. Park;S. I. Kim;Y. C. Kim;N. K. Park
  7. Fundamentals of Organic Chemistry(4th ed.) J. McMurry
  8. J. Cellular Polymers v.2 M. Modesti;S. Bisello;M. Tavan.
  9. 科學と工業 v.69 長谷川喜一;松本明博;大塚惠子;福田明德
  10. Organic Chemistry(4th ed.) T. W. G. Solomons
  11. Polyurethanes World Congress v.10 M. Enayati;A. Riahi;H. Topac;H. Arastoopour;G. Ivanov;F. Shutov.
  12. Polyurethanes World Congress v.9 G. Bauer
  13. Elastomerics R. C. Allen;O. H. Cloutier
  14. Polyurethanes World Congress v.10 X. Imai;X. Shu-chang;K. Enomoto.
  15. Rubber World W. Rasshofer;W. Liman;J. Wagner
  16. 資原高度リサイクル利用技術 (財)日本産業技術振興協會(編)