Abstract
The effect of a porous structure formed after dissolution of fine particles dispersed in a coating layer was investigated on the release rate of core particle by random walk simulation. As a result, the release rate was described by the structure coefficient which increases with the ratio of contact to the surface area. The ratio was independent of the average size of soluble particles and it increased with an increasing volume fraction of soluble particles, with an increasing geometric standard deviation of particle size at the low volume fraction, and with a decreasing standard deviation at the high fraction. Then, the simple correlation was established between the structure coefficient and porous-structure parameters, which should be useful for the design of the release pattern.
| Original language | English |
|---|---|
| Pages (from-to) | 676-682 |
| Number of pages | 7 |
| Journal | Journal of Chemical Engineering of Japan |
| Volume | 36 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 2003 |
| Externally published | Yes |
Fingerprint
Keywords
- Coated particle
- Contact area
- Mathematical model
- Porous structure
- Release rate
ASJC Scopus subject areas
- Chemical Engineering(all)
Cite this
Effect of the porous structure of a coating layer on the release rate of core particle. / Ito, Ryusei; Golman, Boris; Shinohara, Kunio.
In: Journal of Chemical Engineering of Japan, Vol. 36, No. 6, 06.2003, p. 676-682.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of the porous structure of a coating layer on the release rate of core particle
AU - Ito, Ryusei
AU - Golman, Boris
AU - Shinohara, Kunio
PY - 2003/6
Y1 - 2003/6
N2 - The effect of a porous structure formed after dissolution of fine particles dispersed in a coating layer was investigated on the release rate of core particle by random walk simulation. As a result, the release rate was described by the structure coefficient which increases with the ratio of contact to the surface area. The ratio was independent of the average size of soluble particles and it increased with an increasing volume fraction of soluble particles, with an increasing geometric standard deviation of particle size at the low volume fraction, and with a decreasing standard deviation at the high fraction. Then, the simple correlation was established between the structure coefficient and porous-structure parameters, which should be useful for the design of the release pattern.
AB - The effect of a porous structure formed after dissolution of fine particles dispersed in a coating layer was investigated on the release rate of core particle by random walk simulation. As a result, the release rate was described by the structure coefficient which increases with the ratio of contact to the surface area. The ratio was independent of the average size of soluble particles and it increased with an increasing volume fraction of soluble particles, with an increasing geometric standard deviation of particle size at the low volume fraction, and with a decreasing standard deviation at the high fraction. Then, the simple correlation was established between the structure coefficient and porous-structure parameters, which should be useful for the design of the release pattern.
KW - Coated particle
KW - Contact area
KW - Mathematical model
KW - Porous structure
KW - Release rate
UR - http://www.scopus.com/inward/record.url?scp=0041917351&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0041917351&partnerID=8YFLogxK
U2 - 10.1252/jcej.36.676
DO - 10.1252/jcej.36.676
M3 - Article
AN - SCOPUS:0041917351
VL - 36
SP - 676
EP - 682
JO - Journal of Chemical Engineering of Japan
JF - Journal of Chemical Engineering of Japan
SN - 0021-9592
IS - 6
ER -