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5. Induced release
5.1 Thermostimulated rupture
When the temperature is raised, the crystallized oil melts and its density increases. The pressure then exerted on the rigid shell is sufficient to break it, allowing the oil to flow out of the shell (figure 8 ). Rupture takes place through the appearance of a propagating fracture, irrespective of the nature of the oil and the size of the capsules. By increasing the temperature quasi-statically (0.5°C/min), the shell rupture temperature can be determined. This corresponds to the melting temperature of the oil, irrespective of shell size. However, if the temperature increase is rapid (> 5°C/min), inertia effects appear:...
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Induced release
Conclusion
Bibliography
Events
World Emulsion Congress 2010 (October 12-14, Lyon) http://www.cme-emulsion.com
European Colloid and Interface Society conference (September 4-9, 2001, Berlin) http://www.ecis2011.org
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Pressure sensitive record material US 2712507.
New core-shell objects with thermostimulated delivery and method of preparation FR 0955417
Crystallizable oil compositions stabilized by colloidal particles WO 2005/082507A1.
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