| 학회 |
한국공업화학회 |
| 학술대회 |
2016년 봄 (05/02 ~ 05/04, 여수 엑스포 컨벤션) |
| 권호 |
20권 1호 |
| 발표분야 |
고분자_포스터 |
| 제목 |
Porous Particles with Tunable Porosity Generated by Controlled Interfacial Instability of Block Copolymer Emulsions |
| 초록 |
A series of porous block copolymer (BCP) particles with different porous structures and sizes was fabricated by tuning the interfacial behavior of BCP droplets in oil-in-water emulsions. A synergistic adsorption of polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) BCPs and sodium dodecyl sulfate (SDS) to the surface of the emulsion droplet induced a dramatic decrease in the interfacial tension and generated interfacial instability at the particle surface. In particular, the SDS concentration and the P4VP volume fraction of PS-b-P4VP were key parameters in determining the degree of interfacial instability, producing different types of particles including micelles, capsules, closed-porous particles, and open-porous particles with tunable pore sizes ranging from 10 to 500 nm. The open-porous particles could be used as pH-responsive carriers, which was demonstrated by combining and releasing different colored dyes from the particles at desired pH conditions. |
| 저자 |
정지혜1, 구강희1, 신재만1, 장세규2, Craig J. Hawker3, 김범준1
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| 소속 |
1KAIST, 2KIST, 3UCSB |
| 키워드 |
porous particle; block copolymer; interfacial instability; emulsion droplet; carrier
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| E-Mail |
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