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      • 바이오디젤용 저온유동성 향상제의 개발에 관한 연구

        양영도(Young-Do Yang),김영운(Young-Wun Kim),정근우(Keun-Wo Chung),김성보(Seong-Bo Kim),임대재(Dae-Jae Yim),김영직(Young-Gik Kim) 한국트라이볼로지학회 2007 한국트라이볼로지학회 학술대회 Vol.2007 No.6

        New pour point depressants were prepared by making use of the random copolymerization of acrylate monomer. The pour point and cloud point of the synthetic polymers in diesel mixtures containing 5%(BD5) and 20%(BD20) biodiesel were investigated. The characteristics of the synthetic polymers which were random structure of P(St/SMA). P(SMA/St), P(SMA/OMA/St), P(LM/AMA/St), P(LMA/SMA/St) were analyzed by ¹H-NMR and GPC. When the synthetic polymers were added to BD5 and BD20 at the concentration of 5000ppm. The pour point of the terpolymers were -5℃~-10℃ lower than that of the copolymers. In the case of BD5 whose pour point is -12.5℃, the pour point of the existing additives and the P(LMA/SMA/St) polymer additive which showed the lowest pour point among the synthetic polymers were -37.5℃ and -35℃ respectively at the concentration of 5000ppm. The result showed the pour point of the P(LMA/SMA/St) polymer was higher than the existing additives. On the other hand. in the case of BD20 whose pour point is -10℃, the pour points of the existing additives and the P(LMA/OMA/St) polymer was -32.5℃ and -35℃ respectively at the concentration of 5000ppm. It showed that the P(LMA/OMA/St) polymer was lower than the existing additives. In the results of cloud point, the cloud point of the synthetic polymers revealed -3℃ lower than before addition of the polymers and -2℃ lower than the cloud point of existing additives.

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