KNU IFS 2018 Annual International Symposium of Institute of Forest Science (2018.09)바로가기
페이지
pp.93-93
저자
Seok Ho Park, Jin-Chul Kim
언어
영어(ENG)
URL
https://www.earticle.net/Article/A450205
원문정보
초록
영어
Monoolein (1-Oleoyl-rac-glycerol, MO) cubic phase containing poly(hydroxyethyl acrylate-co-propyl methacrylate-co-methacrylic acid) (P(HEA/PMA/MAA)) in its water channel was prepared by a melt-hydration method. P(HEA/PMA/MAA) whose HEA/PMA/MAA molar ratio was 100/2.8/0, 100/6.0/1.6, and 100/6.2/2.5 was prepared by a free radical reaction, confirmed by 1H NMR spectroscopy. Only P(HEA/PMA/MAA)(100/6.0/1.6) exhibited its lower critical solution temperature around 32.8 ℃. The air water/interfacial measurement revealed that the copolymers were surface-active. On the transmission electron microscopy photo, the copolymer had little effect on the structure of the cubic phase. On the differential scanning calorimetry thermogram, MO cubic phase without the copolymer exhibited its phase transition temperature (PTT) around 68.1 ℃ and the inclusion of copolymer in the cubic phase caused the PTT to decrease by 3 to 4 ℃. The effect on the electric field promoted amaranth (dye) emission on the cubic phase. Release by the electric field was further enhanced in copolymers with a high ratio of MAA.
Seok Ho Park [ Department of Medical Biomaterials Engineering, College of Biomedical Science and Institute of Bioscience and Biotechnology, Kangwon National University ]
Jin-Chul Kim [ Department of Medical Biomaterials Engineering, College of Biomedical Science and Institute of Bioscience and Biotechnology, Kangwon National University ]
Corresponding author