| 학회 |
한국화학공학회 |
| 학술대회 |
2007년 가을 (10/26 ~ 10/27, 한국과학기술원) |
| 권호 |
13권 2호, p.2405 |
| 발표분야 |
재료 |
| 제목 |
Controlling hydrophobicity of submicrometer silica spheres via surface modification for nanocomposite applications |
| 초록 |
We control the hydrophobicity of submicrometer silica spheres by modifying their surface with -CH3, -CH=CH2, -(CH2)2CH3, -CH2(CH2)4CH2-, -C6H5, -(CH2)7CH3, and -(CH2)11CH3 groups through a modified one-step process. The scanning electron microscopy (SEM), quasi-elastic light scattering (QELS), UV-visible spectra, nitrogen sorption, and water vapor adsorption methods are used to characterize the particles. Compared with the unmodified particles, the modified particles have lower water vapor adsorption because of the improved hydrophobicity of the particle surface. As a potential application, we prepare polystyrene/SiO2 nanocomposites by blending polystyrene with the synthesized particles. The water contact angle measurements show that the surface of the composite prepared with the modified particles are more hydrophobic. These comprehensive experimental results demonstrate that the hydrophobicity of the particles can be easily controlled by surface modification. |
| 저자 |
Zhijian Wu1, 한 혁2, 한우주1, 김범상3, 안경현4, 이강택3
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| 소속 |
1연세대, 2Chinese Academy of Sciences, 3서울대, 4홍익대 |
| 키워드 |
hydrophobicity; silica; surface modification; nanocomposite
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| E-Mail |
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| 원문파일 |
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