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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received October 8, 2008
Accepted October 15, 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.

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폐 폴리우레탄의 해중합 시 첨가된 pentaerythritol과 sorbitol이 재생 폴리올의 작용기 및 폴리우레탄의 기계적 물성에 미치는 영향

Effect of the Addition of Pentaerythritol or Sorbitol to the Glycolysis of Waste Polyurethane on Prepared Polyol Functionalities and Polyurethane Mechanical Properties

명교림 김민규 고장면 전종한^†

Kyo Lim Myoung Min Gyu Kim Jang Myoun Ko Jong Han Chun^†

한밭대학교 응용화학생명공학부, 305-719 대전광역시 유성구 덕명동 산 16-1

Division of Applied Chemistry and Biotechnology, Hanbat National University, 16-1 San, Dukmyung-dong, Yuseong-gu, Daejeon 305-719, Korea

jhchun@hanbat.ac.kr

Korean Chemical Engineering Research, December 2008, 46(6), 1039-1042(4), NONE Epub 29 December 2008

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Abstract

폐 폴리우레탄의 해중합에 의하여 제조된 재생 폴리올의 작용기를 증가시키기 위하여 해중합 시 첨가한 pentaerythritol (PEN, 작용기(f)=4) 또는 sorbitol(SOR, f=6)이 생성된 재생 폴리올의 작용기와 이를 사용하여 제조한 경질 폴리우레탄폼(polyurethane rigid foam; PUR)의 기계적 물성에 미치는 영향을 조사하였다. PEN 또는 SOR를 첨가한 경우 OH 작용기가 2.2에서 약 2.8로 증가하였고, PUR의 치수안전성 등을 비롯한 기계적 물성이 크게 향상됨을 확인하였다. 이러한 결과는 폴리올의 작용기가 증가하여 제조한 PUR의 가교밀도를 향상시킨 것으로 해석되었다. 또한 재생 폴리올의 폴리올 시스템에 대한 사용량을 8 wt%에서 약 20 wt%로 증가시킬수 있었다.

In order to increase a functionality, OH value, for a recycled polyol prepared from the glycolysis reaction of a waste polyurethane rigid foam(PUR), the effect of an addition of pentaerythritol(PEN, functionality(f)=4) or sorbitol(SOR, f=6) to the its glycolysis reactor on the prepared polyol functionality and the mechanical properties of the polyurethane prepared using it was investigated. The OH values increased from 2.2 for a virgin to 2.8 for the recycled polyol. There was an increase in the mechanical properties including dimensional stability for PUR prepared using the recycled polyol, in which the increased OHs provided higher crosslinking density during PUR synthesis. In addition, the amount of the recycled polyol in the polyol system increased to from 8 to 20 wt% to give better mechanical properties to the PUR.

Keywords

Polyurethane Recycled Polyol Functionality Glycolysis Pentaerythritol Sorbitol

References

Hepburn C, Ir. J. of Polym. Sci. & Tech., 1, 84 (1992)
Yacoub F, Macgregor JF, Chemometrics and Intelligent Laboratory Systems, 65, 17 (2003)
Modesti M, Simioni F, Munari R, Baldoin N, React. Funct. Polym., 26(1), 157 (1995)
Wu CH, Chang CY, Cheng CM, Polymer Degradation and Stability, 80, 103 (2003)
Wu CH, Chang CY, Li JK, Polymer Degradation and Stability, 75, 413 (2002)
Wu CH, Chang CY, Cheng CM, Polymer Degradation and Stability, 80, 103 (2003)
Wu CH, Chang CY, Li JK, J. of the Chinese Inst. of Environ. Eng., 12, 157 (2002)
Wang J, Qian J, Chen D, Synth. Fibre in China, 34, 16 (2005)
Borda J, Pasztor G, Zsuga M, Polymer Degradation and Stability, 68, 419 (2000)
Badri KH, Ahmad SH, Zakaria S, J. Appl. Polym. Sci., 81(2), 384 (2001)
Badri KH, Ahmad SH, Zakaria S, J. Appl. Polym. Sci., 82(4), 827 (2001)
Cao M, Cao X, Su liao, 34, 14 (2005)
Simioni F, Bisello S, Tavan M, Cellular polymers, 2, 281 (1983)
Jung HC, Ryu SC, Kim WN, Lee YB, Choe KH, Kim SB, J. Appl. Polym. Sci., 81(2), 486 (2001)