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oai:recercat.cat:2445/1037822025-12-04T20:58:27Zcom_2072_1057col_2072_478796col_2072_478917

Preparation and characterization of microencapsulated phase change materials for use in building applications Giró Paloma, Jessica Al-Shannaq, Refat Fernández Renna, Ana Inés Farid, Mohammed M. Compostos orgànics volàtils Calorimetria Microencapsulació Volatile organic compounds Calorimetry Microencapsulation A method for preparing and characterizing microencapsulated phase change materials (MPCM) was developed. A comparison with a commercial MPCM is also presented. Both MPCM contained paraffin wax as PCM with acrylic shell. The melting temperature of the PCM was around 21 C, suitable for building applications. The M-2 (our laboratory made sample) and Micronalr DS 5008 X (BASF) samples were characterized using SEM, DSC, nano-indentation technique, and Gas Chromatography/Mass spectrometry (GC-MS). Both samples presented a 6 m average size and a spherical shape. Thermal energy storage (TES) capacities were 111.73 J g 1 and 99.3 J g 1 for M-2 and Micronalr DS 5008 X, respectively. Mechanical characterization of the samples was performed by nano-indentation technique in order to determine the elastic modulus (E), load at maximum displacement (Pm), and displacement at maximum load (hm), concluding that M-2 presented slightly better mechanical properties. Finally, an important parameter for considering use in buildings is the release of volatile organic compounds (VOC's). This characteristic was studied at 65 C by CG-MS. Both samples showed VOC's emission after 10 min of heating, however peaks intensity of VOC's generated from M-2 microcapsules showed a lower concentration than Micronalr DS 5008 X. 2016-11-17T16:24:34Z 2016-11-17T16:24:34Z 2015-12-26 2016-11-17T16:24:39Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1996-1944 https://hdl.handle.net/2445/103782 656409 28787812 eng Reproducció del document publicat a: https://doi.org/10.3390/ma9010011 Materials, 2015, vol. 9, num. 1, p. 11 https://doi.org/10.3390/ma9010011 info:eu-repo/grantAgreement/EC/FP7/610692/EU//INNOSTORAGE cc-by (c) Giró Paloma, Jessica et al., 2015 http://creativecommons.org/licenses/by/3.0/es info:eu-repo/semantics/openAccess 13 p. application/pdf MDPI Articles publicats en revistes (Ciència dels Materials i Química Física)