| 학회 | 한국재료학회 |
| 학술대회 | 2017년 봄 (05/17 ~ 05/19, 목포 현대호텔) |
| 권호 | 23권 1호 |
| 발표분야 | 3. 콜로이달 나노 입자의 자기 조립 기술 및 기능성 구조체 제조(Self-Assembly of Colloidal Nanocrystals into Functional Superst |
| 제목 | Self-Assembly of Polymer Grafted Nanoparticles for ‘Matrix-Free’ Polymer Nanocomposites |
| 초록 | The assembly of ligand coated particles and colloids into two- and three-dimensional array structures has attracted considerable interest owing to the potential applications (such as novel optical materials) that derive from the interactions within particle superlattice structures. A common challenge in the solution-based assembly of particle superlattice structures is the propensity of hard-sphere type particle assemblies to crack formation and brittle fracture during solvent evaporation. Recent progress in controlled radical polymerization offers novel opportunities for polymer-stabilized particle systems as building blocks of particle superlattice structures. Polymer-grafted nanoparticles show new opportunities for the ‘matrix-free’ polymer nanocomposites in which polymer brushes serve a dual purpose: first, to facilitate a more robust mechanical response, and second, to control the microstructure of the inorganic core by tuning the polymer brush architectures (i.e. molecular weight and grafting density). In addition, the steric forces imposed by the dense polymer brushes drive the preferential segregation of additional nano-scale fillers such as nano rods or nanotubes into the interfacial region between the polymer-grafted nanoparticles. Here we demonstrate that the control of the polymer brush architecture can facilitate a hierarchical nanostructure in ‘matrix-free’ polymer nanocomposites that provide a new platform for many interesting applications. |
| 저자 | 최지훈, 김들, 윤석진, 알타바즈 키라코시안 |
| 소속 | 충남대 |
| 키워드 | <P>self-assembly; polymer-grafted nanoparticle; ATRP; nanostructure</P> |
