| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 봄 (04/08 ~ 04/10, 대전컨벤션센터) |
| 권호 |
40권 1호 |
| 발표분야 |
대학원생 구두발표 (영어발표, 발표15분) |
| 제목 |
Nanoscale Phase Behavior of Polymer Blends on Gold Nanoparticle Surface |
| 초록 |
In this work, we employed small angle neutron scattering (SANS) and contrast variation technique to characterize the behaviors of polymer ligands on the nanoparticle (NPs) surfaces. The Blend-type Au NPs were coated with a mixture of thiol terminated two different ligands, poly(methyl methacrylate)-SH (PMMA-SH) and deuterated polystyrene-SH (dPS-SH), and the Au NPs coated only with P(MMA-r-dS)-SH were also prepared for the control case of NPs with homogeneous ligands. From the SANS analysis, by increasing the molecular weight of ligands it was observed that the ligands become phase separated resulting in the formation of Janus-type NPs. Furthermore, Monte Carlo simulations for the model polymer-grafted particle system suggest that effective attraction between the polymers and the particle leads to the dense wetting layer state of solvophilic polymer blends in the vicinity of the solvophobic particle surface, which plays a decisive role to form phase separated morphology. |
| 저자 |
김세용1, 김태환2, 허준1, 최수형3, 방준하1
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| 소속 |
1고려대, 2한국원자력(연), 3홍익대 |
| 키워드 |
Small-Angle Neutron Scattering; Janus Nanoparticle; Polymer Ligands; Polymer Blends on 2D Surface
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| E-Mail |
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