| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 가을 (10/23 ~ 10/25, 대전컨벤션센터) |
| 권호 |
25권 2호, p.1246 |
| 발표분야 |
고분자 (Polymer) |
| 제목 |
Graphene Hollow Capsule Based Closed Cellular Structure for Ultralight, Strong, and Superelastic Materials |
| 초록 |
Structural materials with ultra-light density and high strength derive transformative impacts in the construction, aerospace, and transportation industries. These materials can be realized by assembling ingeniously designed building units (BUs) into interconnected structures. This study uses a hierarchical design strategy starting from the functionalized graphene oxide nanosheets at the molecular- and nanoscale, leading to the microfluidic fabrication of hollow capsule at the microscale. Then, capsules are assembled into centimeter-scale 3D structures. Subsequently, these structures are transformed into self-interconnected and reinforced closed-cellular network. The 3D graphene structure exhibits the Young’s modulus above 177 kPa with a light density of 4.7 mg cm−3 and sustaining up to 87% of the compressive strain benefiting from efficient stress dissipation through the complete space-filling closed-cellular network. The method opens a new pathway for designing lightweight, strong, and superelastic materials. |
| 저자 |
오민준1, 여선주2, 전현민1, 이민환3, 배중건3, 김예슬1, 박경진4, 이승우4, Daeyeon Lee5, 원병묵1, 이원보3, 권석준6, 유필진1
|
| 소속 |
1성균관대, 2North Carolina State Univ., 3서울대, 4고려대, 5Univ. of Pennsylvania, 6KIST |
| 키워드 |
고분자 |
| E-Mail |
|
| 원문파일 |
초록 보기 |
