Articles & Issues
- Language
- korean
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
-
Received June 15, 2008
Accepted July 5, 2008
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.
All issues
에틸렌글리콜을 이용한 폐폴리카보네이트 해중합 특성
Depolymerization of Polycarbonate Waste by Ethylene Glycol
충남대학교 화학공학과, 305-764 대전광역시 유성구 궁동 220번지 1한국화학연구원, 305-600 대전광역시 유성구 장동 100번지
Department of Chemical Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, Korea 1New Chemical Research Division, Korea Research Institute of Chemical Technology, 100 Jang-dong, Yuseong-gu, Daejeon 305-600, Korea
mwhan@cnu.ac.kr
Korean Chemical Engineering Research, October 2008, 46(5), 875-879(5), NONE Epub 10 November 2008
Download PDF
Abstract
본 연구에서는 촉매를 사용하지 않고 에틸렌글리콜(EG)을 이용하여 비스페놀 A(BPA)를 얻기 위한 폴리카보네이트(PC) 해중합 방법에 대하여 연구하였다. 반응시간, 반응온도, 에틸렌글리콜 양에 따른 비스페놀 A의 수율에 대하여 알아 보았으며, 반응속도식을 구하였다. 에틸렌글리콜에 의한 해중합 반응은 반응 온도에 따라 활성화 에너지가 높은 쪽에서 낮은 쪽으로 변하였고, 이는 이 반응이 여러 단계의 직렬반응으로 이루어진 것을 나타낸다. 비스페놀 A의 최대수율은 EG/PC 무게비 4, 반응온도 220 oC, 반응시간 85분에서 95.6%였다.
A method for the depolymerization of polycarbonate waste by glycolysis using ethylene glycol without catalyst was explored in order to get the monomer bisphenol A (BPA). The effect of operation variables such as reaction time, reaction temperature, EG/PC weight ratio and the kinetic of glycolysis were studied. It was found that the polymerization reaction has two different activation energies depending on the reaction temperature. A drop in activation energy with temperature indicates that the reaction mechanism has shifted from one of a succession of elementary steps to another in the series. The maximum yield of BPA of 95.6% was achieved at reaction temperature 220 oC for 85min with EG/PC weight ratio 4.
References
Fox DW, Peters EN, “Method for Recovering a Dihydric Phenol from a Scrap Polyester,” US Patent No. 4,885,407(1989)
Buysch HJ, Schoen N, Kuehling S, “Verfahren zum Spalten von Polycarbonaten in Bisphenol und Diarylcarbonate,” Ger. Often., DE 4,220,412(1994)
Shafer SJ, “Method for Recovering Bis Hydroxy Aromatic Organic Values and Bis Aryl Carbonate Values from Scrap Aromatic Polycarbonate,” US Patent No. 5,336,814(1994)
Hu LC, Oku A, Yamada E, Polymer, 39(16), 3841 (1998)
Oku A, Tanaka S, Hata S, Polymer, 41(18), 6749 (2000)
Hata S, Goto H, Yamada E, Oku A, Polymer, 43(7), 2109 (2002)
Tagaya H, Katoh K, Kadokawa J, Chiba K, Polym. Degrad. Stab., 64, 289 (1999)
Pinero R, Garcia J, Cocero MJ, Green Chem., 7, 380 (2005)
Pinero-Hernanz R, Garcia-Serna J, Cocero MJ, AIChE J., 52(12), 4186 (2006)
Jie H, Ke H, Qing Z, Lei C, Yongqiang W, Zibin Z, Polym. Degrad. Stab., 91, 2307 (2006)
Lin CH, Lin HY, Liao WZ, Shenghong A, Green Chem., 9, 38 (2007)
Genta M, Iwaya T, Sasaki M, Goto M, Hirose T, Ind. Eng. Chem. Res., 44(11), 3894 (2005)
Buysch HJ, Schoen N, Kuehling S, “Verfahren zum Spalten von Polycarbonaten in Bisphenol und Diarylcarbonate,” Ger. Often., DE 4,220,412(1994)
Shafer SJ, “Method for Recovering Bis Hydroxy Aromatic Organic Values and Bis Aryl Carbonate Values from Scrap Aromatic Polycarbonate,” US Patent No. 5,336,814(1994)
Hu LC, Oku A, Yamada E, Polymer, 39(16), 3841 (1998)
Oku A, Tanaka S, Hata S, Polymer, 41(18), 6749 (2000)
Hata S, Goto H, Yamada E, Oku A, Polymer, 43(7), 2109 (2002)
Tagaya H, Katoh K, Kadokawa J, Chiba K, Polym. Degrad. Stab., 64, 289 (1999)
Pinero R, Garcia J, Cocero MJ, Green Chem., 7, 380 (2005)
Pinero-Hernanz R, Garcia-Serna J, Cocero MJ, AIChE J., 52(12), 4186 (2006)
Jie H, Ke H, Qing Z, Lei C, Yongqiang W, Zibin Z, Polym. Degrad. Stab., 91, 2307 (2006)
Lin CH, Lin HY, Liao WZ, Shenghong A, Green Chem., 9, 38 (2007)
Genta M, Iwaya T, Sasaki M, Goto M, Hirose T, Ind. Eng. Chem. Res., 44(11), 3894 (2005)
