Microcapsules containing phase change material for textile thermal insulation were synthesized and characterized. Prior to the encapsulation, the formation, the stability and phase change behavior of paraffin mixture were studied to define an optimum formulation with a wide temperature range. The addition of approximately 4 wt-% tetraethyl orthosilicate in n-hexadecane-n-eicosane mixture was found to improve latent heat of phase change. Microcapsules with approximately 70 wt-% paraffin in core material were investigated by using Fourier transform infrared spectroscopy, differential scanning calorimetry, thermal gravimetric analysis, and scanning electron microscopy.
Zhang, X.X., Wang, X.C., Tao, X.M., and Yick, K.L., Structure and Properties of Wet Spun Thermo-regulated Polyacrylonitrile-vinyldene Chloride Fibers, Textile Res. J. 76(5), 351- 359 (2006).
2.
Choi, K., Cho, G., Kim, P., and Cho, C., Thermal Storage/ Release and Mechanical Properties of Phase Change Materials on Polyester Fabrics, Textile Res. J. 74(4), 292-296 (2004).
3.
Shin, Y., Yoo, D., and Son, K., Development of Thermoregulating Textile Materials with Microencapsulated Phase Change Materials (PCM). II. Preparation and Application of PCM Microcapsules, J. Appl. Polym. Sci. 96, 2005-2010 (2005 ).
4.
Fan, J., and Cheng, X.Y., Heat and Moisture Transfer with Sorption and Phase Change Through Clothing Assemblies, Textile Res. J. 75(3), 187-196 (2005).
5.
Ghali, K., Ghaddar, N., Harathani, J., and Jones, B., Experimental and Numerical Investigation of the Effect of Phase Change Materials on Clothing During Periodic Ventilation, Textile Res. J. 74(3), 205-214 (2004).
6.
Bryant, Y.G., and Colvin, D.P., Fibre with Reversible Enhanced Thermal Storage Properties and Fabric Made There From, US Patent 4 756 958 (1988).
7.
Kaska, K.E., and Chen, M.M., Improvement of the Performance of Solar Energy of Waste Heat Utilization Systems using Phase Change Slurry as Enhanced Heat Transfer Storage Fluid, J. Sol. Energy Eng. 107, 229-236 (1985).
Yamagishi, Y. , Takeuchi, H., and Pyatenko, A., Characteristics of Microencapsulated PCM Slurry as a Heat-transfer Fluid, AIChE J. 45, 696-707 ( 1999).
10.
Yoshizawa, H., Kamio, E., Hirabayashi, N., Jacobson, J., and Kitamura, Y., Membrane Formation Mechanism of Crosslinked Polyurea Microcapsules by Phase Separation Method, J. Microencapsul . 21, 241-249 (2004).
11.
Soto-Portas, M.L., Argillier, J.F., Méchin , F., and Zydowicz, N., Preparation of Oily Polyamide Microcapsules Via Interfacial Polycondensation, Polym. Int. 52, 522-527 (2003).
12.
Uddin, M.S. , Zhu, H.J., and Hawalder , M.N.A., Effects of Cyclic Operation on the Characteristics of a Microencapsulated PCM Storage Material , Int. J. Sol. Energy22(2-3), 105- 114 (2002).
13.
Cho, J. , Kwon, A., and Cho, C., Microencapsulation of Octadecane as a Phase-change Material by Interfacial Polymerization in an Emulsion System, Colloid Polym . Sci. 280, 260-266 (2002).
Zhang, X.X. , Tao, X.M., Yick, K.L., and Wang, X.C., Structure and Thermal Stability of Microencapsulated Phase-change Materials, Colloid Polym. Sci. 282, 330-336 (2004).
16.
Métivaud, V., European Thesis of the University Bordeaux I, France (1999).
17.
Salaün, F., Devaux, E., Bourbigot, S., and Rumeau, P., Microcapsules Comprenant des Matériaux Notamment à Changement de Phase (microcapsules containing in particular phase change material), FR2879112 (2006).
