Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Optimization and Elucidation of Esterification between Adipic Acid and 1,4-Butane Diol

Adipic acid와 1,4-butane diol의 에스테르화 반응 최적화 및 반응기작 규명

  • Chung, Suk-Jin (Department of Food Science and Technology, Seoul National University of Technology) ;
  • Park, Soo-Nam (Department of Fine Chemistry, Seoul National University of Technology)
  • 정석진 (서울산업대학교 식품공학과) ;
  • 박수남 (서울산업대학교 정밀화학과)
  • Published : 2003.06.01
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Abstract

Aliphatic polyester, especially poly(butylene adipate)(PBA), is quite biodegradable and one of the most promising polymer materials to be commercialized. Bis(4-hydroxybutyl) adipate (BHBA) formation stage is the first principal process in the production of PBA from adipic acid (AA) and 1,4-butane diol (BD). In this study, we investigated for the effective production of Bis(4-hydroxybutyl) adipate (BHBA), effects of molar ratio of adipic acid (AA) to 1,4-butane diol (BD), catalyst (tetrabutyl titanate, TBT) concentration, and temperature on the reaction rate of esterification between AA and BD were investigated. Initial reaction rate of the esterification decreased with increasing molar ratio of AA to BD and reaction temperature, whereas reaction constant increased with increase in catalyst-concentration. Activation energy values for catalyzed and uncatalyzed esterifications were 198.5 and 94.8 kJ/mol, respectively.

본 논문에서는 adipic acid(AA)와 1,4-butane diol(BD)을 반응 기질로 이용한 에스테르화 반응에 의하여 bis(4-hydroxy butyl) adipate(BHBA)를 생산하고자 하였으며, 이때 AA와 BD의 몰비율, 촉매(TBT)농도 및 반응온도 등이 에스테르화 반응에 미치는 영향을 검토함으로써 BHBA를 효율적으로 생산하기 위한 기초 최적화 조건을 제시하고자 하였다. AA와 BD 사이의 직접적 에스테르화 반응시 몰비율이 2.0 이상일 때, 반응속도를 살펴본 결과 몰비율([AA]/[BD])이 증가함에 따라 반응속도는 감소함을 확인하였으며, 촉매농도에 따른 반응속도를 살펴보았을 때 촉매농도가 증가할수록 반응속도상수가 증가함을 알 수 있었다. 또한, 반응온도가 증가함에 따라 반응속도상수는 무촉매와 촉매사용시 모두 증가하였으며, 무촉매 반응 및 촉매사용 반응시의 활성화에너지는 각각 198.5 kJ/mol 및 94.8 kJ/mol로서 TBT 촉매사용시 반응이 약 2배 정도 수월해짐을 알 수 있었다.

Keywords

References

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