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Issue
Korean Chemical Engineering Research,
Vol.56, No.1, 103-111, 2018
Bis(2-Hydroxyethyl) Terephthalate와 1,4-Butanediol의 에스테르 교환 반응
Transesterification Kinetics of Bis(2-Hydroxyethyl) Terephthalate with 1,4-Butandiol
전형철, 한명완
본 연구에서는 PET (Poly Ethylene Terephthalate)의 단량체인 BHET (bis (2-Hydroxyethyl) Terephthalate)와 1,4-BD (1,4-Butanediol)의 에스테르 교환반응을 활용하여 PBT (Poly Butylene Terephthalate)의 단량체인 BHBT (Bis (4-Hydroxybutyl Terephthate)를 생성하는 반응에 대하여 조사하였다. 이 반응의 촉매로 Zinc Acetate를 사용하였다. 회분식 반응기를 통하여 BHET, EG (Ethylene Glycol), THF (Tetrahydrofuran)의 양을 정량하여 반응 kinetics 모델을 구성하였다. 제시된 모델을 통하여 반응속도와 반응물의 조성 분포를 조사하였고, 이 모델의 예측 값과 실험 값들이 잘 일치함을 보였다.
Transesterification of BHET (Bis (2-Hydroxyethyl) Terephthalate), monomer of PET (Poly Ethylene Terephthalate) to BHBT (Bis (4-Hydroxybutyl Terephthate), monomer of PBT (Poly Butylene Terephthalate), using 1,4-BD (1,4-butanediol) were investigated. Zinc acetate was used as a catalyst for the reaction. Amounts of BHET, EG, and THF (Tetrahydrofuran) in a batch reactor were measured for determining the reaction kinetics. Mathematical models of the batch reactor for the transesterification reaction were developed and used to characterize the reaction kinetics and the composition distribution of the reaction products. Model predictions for the transesterification were in good agreement with experimental results.
Keywords: PET; Recycle; PBT; BHET; BHBT; Transesterification
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