| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 가을 (10/06 ~ 10/08, 제주 ICC) |
| 권호 |
39권 2호 |
| 발표분야 |
고분자가공/복합재료-자가치유 고분자와 복합소재 |
| 제목 |
Novel stearic acid/graphene core-shell composite microcapsule as a phase change material exhibiting high shape stability and performance |
| 초록 |
A stearic acid (SA)/graphene composite microcapsule, having a core-shell structure, is prepared for the first time using a latex technology for use as a novel composite phase change material (PCM) for thermal energy management. Melted SA is dispersed in water using an anionic surfactant as a stabilizer and cooled to prepare a water-based latex containing negatively charged SA particles. A simple mixing of this latex with an aqueous dispersion of graphene, prepared with aid of a cationic surfactant, results in the self-assembly of graphene on a SA particle surface by an electrostatic interaction, allowing for the encapsulation of SA with graphene to form a core-shell composite microcapsule. The protective graphene shell gives an excellent shape stability to the composite during phase change and a substantial improvement in thermal stability of the active SA core. |
| 저자 |
다오, 간수크, 정한모
|
| 소속 |
울산대 |
| 키워드 |
Graphene; Nano composites; Core-Shell
|
| E-Mail |
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