| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 봄 (04/07 ~ 04/09, 대전컨벤션센터) |
| 권호 |
46권 1호 |
| 발표분야 |
콜로이드 및 분자조립 부문위원회 Ⅰ |
| 제목 |
Fabrication of elastic mechanochromic fiber with non-close-packed silica nanoparticles in microfluidic system |
| 초록 |
We report a fabrication system that can obtain continuous mechanochromic fibers through a microfluidic system, which can control the diameter of the fibers and production rate. The microfluidic jetting is generated by sheath flow of immiscible carrier fluid as continuous phase and in situ photopolymerization by UV exposure at the exit of microfluidic channel. The dispersed phase is composed of photocurable resin and monodisperse silica nanoparticle that have repulsive interparticle potential forming non-close-packed regular array. As the interparticle distance among the silica particles is decreased by stretching the fibers, the structural colors of the fibers are blue-shifted. Importantly, the thickness of microfibers can be readily manipulated by flow rate of continuous and dispersed phase. Moreover, this system enables fabrication of Janus fibers that exhibits two distinct colors domain. |
| 저자 |
김경한1, 김종현2, 이근호2, 김지원2, 한상훈2, 김신현2, 이창수1
|
| 소속 |
1충남대, 2KAIST |
| 키워드 |
Colloidal arrays; structural colors; fibers; microfluidics
|
| E-Mail |
|
