| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 봄 (04/10 ~ 04/12, 부산컨벤션센터(BEXCO)) |
| 권호 |
44권 1호 |
| 발표분야 |
고분자합성 |
| 제목 |
Preparation of Hollow Mesoporous Silica Nanosphere Using Pentablock Copolymer Templates |
| 초록 |
We developed hollow mesoporous silica nanosphere materials in the presence of PLGA-PEO-PPO-PEO-PLGA pentablock copolymer templates under acidic conditions. Tetraethyl orthosilicate (TEOS) was used as a silica precursor and two kinds of pentablock copolymers with different molecular weights and block ratios were used as structure-directing agents. The physicochemical characteristics of hollow mesoporous silica nanospheres were analyzed by transmission electron microscopy (TEM), nitrogen adsorption-desorption, synchrotron small angel X-ray scattering (SAXS) and so on. Mesopore cavity and micropores at the pore surface were found from TEM and nitrogen sorption analysis. It is noteworthy that pore structure and morphology were varied depending on the length scale of pentablock copolymer templates and the hollow mesopore structure was obtained at ambient temperature. |
| 저자 |
선우영, 조은범
|
| 소속 |
서울과학기술대 |
| 키워드 |
nanosphere; pentablock; copolymer; TEOS
|
| E-Mail |
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