Abstract
Phase change materials (PCM’s) are substances that undergo a phase transition at a specific temperature and, as a result, they are able to absorb and release the latent heat when isothermal conditions are altered. PCM’s could be used during transport or storage, for the protection of solid foods, beverages, pharmaceutical products, textile industry, blood derivatives, electronic circuits, cooked food, biomedical products and many others.
Direct application of PCM’s is difficult since they have weak thermal stability, low thermal conductivity and some of them are liquid at ambient temperature and, thus, are not easy to handle or to be directly incorporated into packaging structures and refrigeration equipments. Therefore, the encapsulation of the PCM in a shell material is a plausible solution to avoid all these problems. The capsules protect the PCM against the influences of the outside environment, increasing the heat-transfer area, and permitting the core material to withstand changes in volume of the PCM, as the phase change occurs allowing small and portable thermal energy storage systems.
One proprietary methodology used for the encapsulation of PCM materials is electrohydrodynamic processing. This processing technique has proven to be a suitable method for encapsulation of several components, including biomedical substances, functional food ingredients, PCM’s and others substances within polymer matrices. The electrohydrodynamic processing including electrospinning and electrospraying processes, is a technology whereby ultrafine structures, typically with diameters of several tens to several hundreds of nanometers, may be formed by applying a high-voltage electric field to a solution of polymers.
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Pérez-Masiá, R., Fabra, M.J., Chalco-Sandoval, W., López-Rubio, A., Lagaron, J.M. (2015). Development by Electrohydrodynamic Processing of Heat Storage Materials for Multisectorial Applications. In: Macagnano, A., Zampetti, E., Kny, E. (eds) Electrospinning for High Performance Sensors. NanoScience and Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-14406-1_11
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DOI: https://doi.org/10.1007/978-3-319-14406-1_11
Publisher Name: Springer, Cham
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