Low-Temperature Decomposition of Epoxy Resin

Katsuhiko Saido; Hiroyuki Taguchi; Yoichi Kodera; Takeshi Kuroki; Jeong-Hun Park; Seon-Yong Chung

Macromolecular Research, Vol.12, No.5, 490-492, October, 2004

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Low-Temperature Decomposition of Epoxy Resin

Katsuhiko Saido^†, Hiroyuki Taguchi, Yoichi Kodera¹, Takeshi Kuroki², Jeong-Hun Park³, and Seon-Yong Chung³

College of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi, Chiba 274-8555, Japan
¹National Institute of Advanced Industrial Science and Technology, 16-3 Onogawa, Tsukuba, Ibaraki 305-0053, Japan
²College of Pharmacy, Polymer Decomposition Laboratory Co., Ltd., 2-17-7 Aoshima, Miyazaki, Miyazaki 889-2162, JapanJeong-Hun Park and Seon-Yong Chung
³College of Engineering, Chonnam National University, 300 Yongbong, Buk, Gwangju 500-757, Japan

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We report a new method using a heating medium for the thermal decomposition of epoxy resin (EP) at temperatures ranging from 50 to 200 ℃. EP decomposition also occurred below 50 ℃ during a 6-day period to generate bisphenol A (BPA) at concentrations as high as 5 ppm. When polyethylene glycol was used as a heating medium, we determined the kinetics of the EP decomposition at low temperature. We determined the apparent activation energy of the overall decomposition to be 40.8 kJ/mol and the frequency factor to be 2.3 X 10³ by monitoring the rate of BPA formation. Thus, EP is clearly unstable upon the application of heat.

Keywords:epoxy resin;bisphenol A;endocrine disrupting chemical;low-temperature decomposition;plastic;landfill

[References]

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Thompson RC, Olsen Y, Mitchell RP, Davis A, Rowland SJ, John AWG, McGonigle D, Russel AE, Science, 304, 838 (2004)
Sakamoto H, Matsuzaka A, Itho R, Tohyama Y, J. Food Hyg. Soc. Jpn, 41, 200 (2000)
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Hunt PA, Koehler KE, Susiarjo M, Hodges CA, Ilagan A, Voigt CR, Thomas S, Thomas BF, Hassold TI, Curr. Biol., 13, 546 (2003)
Harris CA, Henntu P, Parker MG, Sumpter JP, Environ. Health Perspect., 105, 802 (1997)
Vonier PM, Crain DA, McLachlan JA, Guillette LJ, Arnold SF, Environ. Health Perspect., 104, 1318 (1996)
Nagel SC, Environ. Health Perspect., 105, 70 (1997)
Saito D, Minamida G, Izukuri K, Tani-Ishii N, Kato T, Koshihara S, Environ. Sci., 10, 55 (2003)
Saido K, Kodera Y, Taguchi H, Tomono K, Ishihara Y, Kuroki T, Polym. Prepr. Ext. Abstr ACS Natl. Meet. Am. Chem. Soc., 43(2), 1162 (2002)
Saido K, Taguchi H, Kodera Y, Ishihara Y, Ryu IJ, Chung SY, Macromol. Res., 11(2), 87 (2003)
Nakagawa H, Tsuge S, J. Anal. Appl. Pyrolysis, 12, 97 (1987)
Sullivan EA, J. Appl. Polym. Sci., 42, 1815 (1991)
Miyakawa H, Ibe A, Tabata S, Sadamasu Y, Yasui A, Yasuda K, Saito K, Ann. Rep. Tokyo Metr. Res. Lab. P. H, 52, 66 (2001)
Uematsu Y, Hirata K, Iida K, Saito K, J. Food Hyg. Soc. Jpn, 41, 23 (2000)
Buch X, Shanahan MER, J. Appl. Polym. Sci., 76, 987 (1999)
Saido K, Tomono K, Taguchi H, Ishihara Y, Kuroki T, J. Oleo Sci., 50, 875 (2001)
Barone FS, Costa JMA, Ciardullo L, 6^th Environmental Engineering Specialty conference of the CSCE, 41 (2000)

[1] Damstra T, Clin. Toxic, 40, 457 (2002)

[2] Yasuhara A, Nakasugi O, J. Environ. Chem., 2, 25 (1992)

[3] Thompson RC, Olsen Y, Mitchell RP, Davis A, Rowland SJ, John AWG, McGonigle D, Russel AE, Science, 304, 838 (2004)

[4] Sakamoto H, Matsuzaka A, Itho R, Tohyama Y, J. Food Hyg. Soc. Jpn, 41, 200 (2000)

[5] Loyo-Rosales JE, Schmitz-Afonso I, Rice CP, Torrents A, Anal. Chem., 75, 4811 (2003)

[6] Hunt PA, Koehler KE, Susiarjo M, Hodges CA, Ilagan A, Voigt CR, Thomas S, Thomas BF, Hassold TI, Curr. Biol., 13, 546 (2003)

[7] Harris CA, Henntu P, Parker MG, Sumpter JP, Environ. Health Perspect., 105, 802 (1997)

[8] Vonier PM, Crain DA, McLachlan JA, Guillette LJ, Arnold SF, Environ. Health Perspect., 104, 1318 (1996)

[9] Nagel SC, Environ. Health Perspect., 105, 70 (1997)

[10] Saito D, Minamida G, Izukuri K, Tani-Ishii N, Kato T, Koshihara S, Environ. Sci., 10, 55 (2003)

[11] Saido K, Kodera Y, Taguchi H, Tomono K, Ishihara Y, Kuroki T, Polym. Prepr. Ext. Abstr ACS Natl. Meet. Am. Chem. Soc., 43(2), 1162 (2002)

[12] Saido K, Taguchi H, Kodera Y, Ishihara Y, Ryu IJ, Chung SY, Macromol. Res., 11(2), 87 (2003)

[13] Nakagawa H, Tsuge S, J. Anal. Appl. Pyrolysis, 12, 97 (1987)

[14] Sullivan EA, J. Appl. Polym. Sci., 42, 1815 (1991)

[15] Miyakawa H, Ibe A, Tabata S, Sadamasu Y, Yasui A, Yasuda K, Saito K, Ann. Rep. Tokyo Metr. Res. Lab. P. H, 52, 66 (2001)

[16] Uematsu Y, Hirata K, Iida K, Saito K, J. Food Hyg. Soc. Jpn, 41, 23 (2000)

[17] Buch X, Shanahan MER, J. Appl. Polym. Sci., 76, 987 (1999)

[18] Saido K, Tomono K, Taguchi H, Ishihara Y, Kuroki T, J. Oleo Sci., 50, 875 (2001)

[19] Barone FS, Costa JMA, Ciardullo L, 6^th Environmental Engineering Specialty conference of the CSCE, 41 (2000)