Ho-Jeong Ahn
LG Household and Healthcare
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Publication
Featured researches published by Ho-Jeong Ahn.
Journal of Dispersion Science and Technology | 2001
Jin-Chul Kim; Myung-Eon Song; Eun-Joo Lee; Seung-Kyu Park; Moon-Jeong Rang; Ho-Jeong Ahn
Microcapsules were prepared by complex coacervation between gelatin (Type A) and carboxymethylcellulose (CMC). Triclosan (TS) dissolved in octyl salicylate (OS) was used a core material and glutaraldehyde as a crosslinking agent. The microcapsules on the scanning electron micrographs were spherical and exhibited core and shell morphology. The thermograms of freeze-dried microcapsules showed no evidence for the melting of TS, suggesting that TS remained dissolved in the cores of the microcapsules and did not exist as a crystalline solid even after the microcapsules were dried. Microelectrophoresis revealed that the point of zero charge of the microcapsules occured around pH 3.3, far below the isoelectric point of gelatin. This means that along with gelatin, CMC, a negatively charged polymer, constitutes the wall of microcapsules, decreasing the positive charges on the gelatin. The degree of release of TS and OS from the microcapsules in ethanol/water solvents was strongly dependent on the content of the alcohol, a good solvent for the core materials. No significant release was observed in ethanol/water (1/3, v/v) but the release was significant when the content of the alcohol increased.
Colloids and Surfaces B: Biointerfaces | 2002
Jin-Chul Kim; Myung-Eon Song; Min-Joo Kim; Eun-Joo Lee; Seung-Kyu Park; Moon-Jeong Rang; Ho-Jeong Ahn
Archive | 2002
Sang-Nyun Kim; Ho-Jeong Ahn; Chang-Woo Lee; Min-Ho Lee; Jung-Hun Kim; Jong-II Kim; Seung-Jin Kim; Ho-Song Cho; Heon-Sik Lee; Hyung-Jin Kim; Jin-Chul Kim; Seung-Kyu Park
Archive | 2001
Seong-Lok Hwang; In-Byeong Yoon; Min-Ho Lee; Sug-Youn Chang; Moon-Jeong Rang; Ho-Jeong Ahn
Archive | 2002
Sang-Nyun Kim; Ho-Jeong Ahn; Chang-Woo Lee; Min-Ho Lee; Jung-Hun Kim; Jong-Il Kim; Seung-Jin Kim; Ho-Song Cho; Heon-Sik Lee; Hyung-Jin Kim
Archive | 2002
Sang-Nyun Kim; Ho-Jeong Ahn; Chang-Woo Lee; Jung-Hun Kim; Jong-Il Kim; Heon-Sik Lee; Min-Ho Lee; Ho-Song Cho; Seung-Jin Kim; Hong-Soon Park
Journal of Applied Polymer Science | 2002
Jin-Chul Kim; Myung-Eon Song; Seung-Kyu Park; Eun-Joo Lee; Moon-Jeong Rang; Ho-Jeong Ahn
Archive | 2002
Sang-Nyun Kim; Ho-Jeong Ahn; Chang-Woo Lee; Min-Ho Lee; Jung-Hun Kim; Jong-Il Kim; Seung-Jin Kim; Ho-Song Cho; Heon-Sik Lee; Hyung-Jin Kim; Jin-Chul Kim; Seung-Kyu Park
Journal of Colloid and Interface Science | 2002
Jin-Chul Kim; Myeong-Eun Song; Eun-Joo Lee; Seung-Kyu Park; Moon-Jeong Rang; Ho-Jeong Ahn
Archive | 1999
Je-Kwon Goo; Young-Ho Choi; Moon-Jeong Rang; Tae-Seong Kim; Tae-Kyung Huh; Jung-Jin Choi; Ho-Jeong Ahn