화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2019년 봄 (04/10 ~ 04/12, 부산컨벤션센터(BEXCO))
권호 44권 1호
발표분야 고분자구조 및 물성
제목 Phase behavior and polymer dynamics of polymer-grafted nanoparticles
초록 Despite extensive studies on the mechanical properties and thermal stability of polymer-grafted nanoparticles (PGNPs), up to date only little is known about the phase behaviors of miscible or immiscible binary PGNPs blends. Here, the spatial distribution of binary PGNPs blends was observed for the combination of deuterated PS-grafted silica (dPS-SiO2) NPs with (i) hydrogenated PS-grafted silica (hPS-SiO2) and (ii) hydrogenated PMMA-grafted silica (hPMMA-SiO2) NPs with various molecular weight and grafting density, as well as (iii) hydrogenated linear PMMA (hPMMA). For immiscible blends of PGNPSs (dPS-SiO2/hPMMA-SiO2), the uniform distribution of the individual particle constituents was found in contrast to the phase separation of the corresponding linear polymer blends (i.e., dPS/hPMMA), indicating a crucial role of the polymer brushes in their dynamics and the relevant phase behavior.
저자 김들, 박혜린, 최지훈
소속 충남대
키워드 polymer-grafted nanoparticle; neutron reflectometry; phase separation
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