Abstract
Synthetic mica has more high thermostability than natural mica and can be controlled expandability and cation-exchange-capacity (CEC) by changing magnitude of effective-layer-charge (ELC). In this study, we prepared lithium-type tetra silicic mica (Li-TSM) from Na-TSM by ion exchange method. This mica is one of the expansible synthetic fluoro mica but a few details had been attempted. The negative charge in silicate layer of Li-TSM can be controlled by adjusting the amount of Al 3+-fixation, and the CEC is controllable. When the CEC of Li-TSM had been controlled by partially fixation of Al 3+ to Li-TSM ((Al, Li)-HTSM), their swelling ability increased and their introducable capacity of organic compounds into interlayer also increased more than Na-TSM. Furthermore, the composites of (Al, Ag)-HTSM, which is Ag +-exchanged complex from (AI, Li)-HTSM, and (Al, Ag)-HTSM-TBZ(thiazole) complex, which has antifungal activity, was synthesized. The rate of elution of Ag + from this TBZ composite was inhibited than (Al, Ag)-HTSM. We thought that this was caused by chelation of Ag + and TBZ in interlayer. These composites had an antimicrobial and antifungal activity and this activity was observed for samples heat-treated up to at 400°C where TBZ in TSM interlayer decomposed completely.
| Original language | English |
|---|---|
| Pages (from-to) | 303-307 |
| Number of pages | 5 |
| Journal | Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan |
| Volume | 113 |
| Issue number | 1316 |
| DOIs | |
| Publication status | Published - 2005 Apr |
| Externally published | Yes |
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Keywords
- Cation exchange capacity
- Fixation
- Layer charge
- Synthetic mica
- TBZ
ASJC Scopus subject areas
- Ceramics and Composites
Cite this
Properties of Li exchanged tetrasilicic fluoro mica (Li-TSM) and synthesis of composites with antimicrobial and antifungal agents. / Kishimoto, Tetsuya; Fujimori, Hirotaka; Ioku, Koji; Goto, Seishi.
In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 113, No. 1316, 04.2005, p. 303-307.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Properties of Li exchanged tetrasilicic fluoro mica (Li-TSM) and synthesis of composites with antimicrobial and antifungal agents
AU - Kishimoto, Tetsuya
AU - Fujimori, Hirotaka
AU - Ioku, Koji
AU - Goto, Seishi
PY - 2005/4
Y1 - 2005/4
N2 - Synthetic mica has more high thermostability than natural mica and can be controlled expandability and cation-exchange-capacity (CEC) by changing magnitude of effective-layer-charge (ELC). In this study, we prepared lithium-type tetra silicic mica (Li-TSM) from Na-TSM by ion exchange method. This mica is one of the expansible synthetic fluoro mica but a few details had been attempted. The negative charge in silicate layer of Li-TSM can be controlled by adjusting the amount of Al 3+-fixation, and the CEC is controllable. When the CEC of Li-TSM had been controlled by partially fixation of Al 3+ to Li-TSM ((Al, Li)-HTSM), their swelling ability increased and their introducable capacity of organic compounds into interlayer also increased more than Na-TSM. Furthermore, the composites of (Al, Ag)-HTSM, which is Ag +-exchanged complex from (AI, Li)-HTSM, and (Al, Ag)-HTSM-TBZ(thiazole) complex, which has antifungal activity, was synthesized. The rate of elution of Ag + from this TBZ composite was inhibited than (Al, Ag)-HTSM. We thought that this was caused by chelation of Ag + and TBZ in interlayer. These composites had an antimicrobial and antifungal activity and this activity was observed for samples heat-treated up to at 400°C where TBZ in TSM interlayer decomposed completely.
AB - Synthetic mica has more high thermostability than natural mica and can be controlled expandability and cation-exchange-capacity (CEC) by changing magnitude of effective-layer-charge (ELC). In this study, we prepared lithium-type tetra silicic mica (Li-TSM) from Na-TSM by ion exchange method. This mica is one of the expansible synthetic fluoro mica but a few details had been attempted. The negative charge in silicate layer of Li-TSM can be controlled by adjusting the amount of Al 3+-fixation, and the CEC is controllable. When the CEC of Li-TSM had been controlled by partially fixation of Al 3+ to Li-TSM ((Al, Li)-HTSM), their swelling ability increased and their introducable capacity of organic compounds into interlayer also increased more than Na-TSM. Furthermore, the composites of (Al, Ag)-HTSM, which is Ag +-exchanged complex from (AI, Li)-HTSM, and (Al, Ag)-HTSM-TBZ(thiazole) complex, which has antifungal activity, was synthesized. The rate of elution of Ag + from this TBZ composite was inhibited than (Al, Ag)-HTSM. We thought that this was caused by chelation of Ag + and TBZ in interlayer. These composites had an antimicrobial and antifungal activity and this activity was observed for samples heat-treated up to at 400°C where TBZ in TSM interlayer decomposed completely.
KW - Cation exchange capacity
KW - Fixation
KW - Layer charge
KW - Synthetic mica
KW - TBZ
UR - http://www.scopus.com/inward/record.url?scp=18844365639&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=18844365639&partnerID=8YFLogxK
U2 - 10.2109/jcersj.113.303
DO - 10.2109/jcersj.113.303
M3 - Article
AN - SCOPUS:18844365639
VL - 113
SP - 303
EP - 307
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 0914-5400
IS - 1316
ER -