| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
콜로이드 및 분자조립 부문위원회 I |
| 제목 |
Oxidation–sensitive O/W emulsions using poly(vinyl pyrrolidone-co-allyl phenyl sulfide) as a stabilizer. |
| 초록 |
This research was focus on oxidation-responsive emulsions which can be prepared by stabilizing mineral oil droplets with poly (vinyl pyrrolidone-co-ally lphenyl sulfide) (P(VP-APS)). The sulfide of APS could be oxidized to sulfoxide and sulfone when treated by oxidizing agent such as H2O2, and the change of the group can be observed by the result of 1H NMR and XPS spectroscopy. All the copolymers did not show the LCST behavior before or after H2O2 treatment but the optical density of copolymer solutions decreased after oxidation by H2O2. The interfacial activity of the copolymer decreased significantly with the treatment of H2O2 which was the main reason for the weakening of the emulsion stability. This result can also be proved by the time required for the phase separation and the increasing rate of oil droplet diameter, the faster the increase rate of the oil droplet diameter and the phase separation, the more unstable the emulsion. |
| 저자 |
자오, 김진철
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| 소속 |
강원대 |
| 키워드 |
Emulsion; Oxidizable copolymers; Allyl phenyl sulfide
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| E-Mail |
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