Ambient-temperature supercritical drying of transparent silica aerogels
| Date Published |
07/1985
|
|---|---|
| Publication Type | Journal Article
|
| Authors | |
|---|---|
| DOI |
10.1016/0167-577X(85)90077-1
|
| Abstract |
A novel technique to supercritically dry alcogels to transparent silica aerogels at near ambient temperature is described. This supercritical drying occurs at ⩽ 40°C instead of at ≥ 270°C, by substituting liquid CO2 for the alcohol in the alcogel. The time required for drying is reduced from 2–3 days to 8–10 h. Light scattering, optical and micro-structural properties of aerogels produced by this process and by high-temperature supercritical drying are compared and shown to be similar. |
| Notes |
0167-577Xdoi: DOI: 10.1016/0167-577X(85)90077-1 |
| Journal |
Materials Letters
|
| Volume |
3
|
| Year of Publication |
1985
|
| Issue |
9-10
|
| Pagination |
363-367
|
| Organizations | |
| Download citation |