| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 봄 (04/10 ~ 04/11, 대전 컨벤션센터) |
| 권호 |
39권 1호 |
| 발표분야 |
신진연구자 특별 심포지움(초청-영어발표/포스터-국문발표 가능) |
| 제목 |
Multiscale Structure, Interfacial Cohesion, Adsorbed Layers, and Thermodynamics in Dense Polymer-Nanoparticle Mixtures |
| 초록 |
The states of nanoparticle dispersions in concentrated polymer solutions are studied with extensive small angle scattering and NMR experiments. Silica nanoparticles are suspended in polymer-solvent mixtures. The effects of polymer induced interactions on the particle microstructure are examined; the local order and long wave length concentration fluctuations of nanoparticles are obtained from the analysis of scattering structure factors and compared with the Polymer Reference Site Interaction Model (PRISM) theory. Exploiting contrast matching small-angle neutron scattering, all partial collective structure factors of particles, polymers and their interface are characterized establishing the existence and size of adsorbed polymer layers. Comparisons of experimental structure factors to PRISM predictions yield a key parameter, the polymer segment-nanoparticle attractive contact interaction energy; this cohesive energy controls the state of particle and polymer dispersions. |
| 저자 |
김소연 |
| 소속 |
울산과학기술대 |
| 키워드 |
polymer nanocomposite; dispersion
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| E-Mail |
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