| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO)) |
| 권호 |
25권 2호 |
| 발표분야 |
포스터-콜로이드·계면화학 |
| 제목 |
Bacterial cellulose nanofibrils-armored Pickering emulsions with limited influx of metal ions for prolonged sun protection |
| 초록 |
This study introduces a novel UV-blocking Pickering emulsion system of which solid interface consisted of a bacterial cellulose nanofibril (BCNF) surfactant. For this, we prepared TEMPO-oxidized BCNFs and their surface was hydrophobically modified by covalently grafting controlled amounts of C18 alkyl chains. We observed that this BCNF surfactant reduced the surface tension while forming a cellulose membrane at the oil-water (O/W) interface. This cellulose membrane stabilized Pickering emulsion by armoring oil drops. The BCNF surfactant was feasible to emulsify up to 40 vol% of oil. We showed that the BCNFs were able to entrap metal ions by electrostatic binding between BCNFs and metal ions which is essential for the emulsion to maintain UV-blocking performance. Finally, we expect that the BCNFs fabricated in this study would have great applicability either for development of a variety of cellulose surfactant or for the application of UV-blocking Pickering emulsions. |
| 저자 |
양종렬, 서혜민, 김진웅
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| 소속 |
성균관대 |
| 키워드 |
Pickering emulsion; bacterial cellulose nanofibril; TEMPO; UV-blocking
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| E-Mail |
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