| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Shape Tunable Cone-Shaped Particles by Controlled Phase Separation of Diblock Copolymer and Random Copolymer Confined in Emulsion Droplet |
| 초록 |
Co-assembly of block copolymer (BCP) and random copolymer (rCP) blends confined in the evaporative emulsion droplet can generate particles with diverse morphology and shape. Here, we report the 1) formation mechanism and 2) shape controllability of cone-shaped Janus particles based on the phase separation of poly(styrene-block-1,4-butadiene) (PS-b-PB) BCP and poly(methylmethacrylate-random-4-acryloylbenzophenone) (P(MMA-r-4ABP)) rCP. The morphological transition from onion-like to cone-shaped Janus particle was observed with increasing mole fraction of 4ABP in rCP since the segregation strength between BCP and rCP was increased with 4ABP. Moreover, monodispersed cone-shaped Janus particles were generated using membrane emulsification, and their size, shape, and Janusity were controlled by changing the pore size (dpore) of membranes and the volume fraction of rCP (frCP) in the BCP/rCP blend. Structural analysis of those particles were also performed to quantify their shape-anisotropy. |
| 저자 |
김은지1, 신재만1, 구강희1, Kin Liao2, 김범준1
|
| 소속 |
1KAIST, 2Khalifa Univ. |
| 키워드 |
block copolymer particles; emulsion; Janus particles; shape-anisotropy; cone-shape
|
| E-Mail |
|
