Encapsulation of PCM for Thermo-Regulating Fabric Application
ABSTRACT
Polyethylene glycol (PEG) has been used as a phase change material (PCM) to create a thermo-regulating fabric. PEG-600 (Mw) was encapsulated using an in-situ polymerization technique in an oil-in water emulsion with encapsulating water-immiscible liquid by the reaction of urea with formaldehyde at acidic pH. Both FTIR analysis and DSC studies verified the formation of PEG microcapsules (MC). Melting temperature (Tm) of the microcapsules was found approximately 21°C which was the same as neat PEG. The heat storage capacity of these MCs was determined to be 12.78 J/g by DSC analysis. FTIR analysis of the MCs exhibited the peaks at 3211 cm﹣1, 1650 cm﹣1, and 1400 cm﹣1. These are the characteristic absorption peaks of -NH2, -C=O stretching and -CH bending vibrations, respectively. Fabric coated with PEG microcapsules showed a 20% higher thermal resistance, than the uncoated fabric, when heated on a Sweating Hot Plate (MTNW Corporation).
Polyethylene glycol (PEG) has been used as a phase change material (PCM) to create a thermo-regulating fabric. PEG-600 (Mw) was encapsulated using an in-situ polymerization technique in an oil-in water emulsion with encapsulating water-immiscible liquid by the reaction of urea with formaldehyde at acidic pH. Both FTIR analysis and DSC studies verified the formation of PEG microcapsules (MC). Melting temperature (Tm) of the microcapsules was found approximately 21°C which was the same as neat PEG. The heat storage capacity of these MCs was determined to be 12.78 J/g by DSC analysis. FTIR analysis of the MCs exhibited the peaks at 3211 cm﹣1, 1650 cm﹣1, and 1400 cm﹣1. These are the characteristic absorption peaks of -NH2, -C=O stretching and -CH bending vibrations, respectively. Fabric coated with PEG microcapsules showed a 20% higher thermal resistance, than the uncoated fabric, when heated on a Sweating Hot Plate (MTNW Corporation).
Cite this paper
S. Ghosh and P. Bhatkhande, "Encapsulation of PCM for Thermo-Regulating Fabric Application," International Journal of Organic Chemistry, Vol. 2 No. 4, 2012, pp. 366-370. doi: 10.4236/ijoc.2012.24050.
S. Ghosh and P. Bhatkhande, "Encapsulation of PCM for Thermo-Regulating Fabric Application," International Journal of Organic Chemistry, Vol. 2 No. 4, 2012, pp. 366-370. doi: 10.4236/ijoc.2012.24050.
References
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[1] M. O’Mahony and S. Braddock, “Sportstech: Revolutionary Fabrics, Fashion F,” Thames & Hudson, London, 2002. [2] Y. Jun, C. Park, H. Shim and T. Kang, “Thermal Comfort Properties of Wearing Caps from Various Textiles,” Textile Research Journal, Vol. 79, No. 2, 2009, pp. 179-189. doi:10.1177/0040517508093444 [3] S. Mondal, “Phase Change Material for Smart Textile: An Over View,” Applied Thermal Engineering, Vol. 28, 2008, pp. 1536-1550. doi:10.1016/j.applthermaleng.2007.08.009 [4] E. Brown, M. Kessler, N. Sottos and S. White, “In Situ Poly(Urea-Formaldehyde) Microencapsulation of Dicyclopentadiene,” Journal of Microencapsulation, Vol. 20, No. 6, 2003, pp. 719-730. [5] G. Nelson, “Application of Microencapsulation in Textiles,” International Journal of Pharmaceutics, Vol. 242, 2002, pp. 55-62. doi:10.1016/S0378-5173(02)00141-2 [6] F. Salaün, S. Bourbigot and P. Rumeau, “Development of Phase Change Materials in Clothing Part 1: Formulation of Microencapsulated Phase Change,” Textile Research Journal, Vol. 80, No. 3, 2010, pp. 195-205. doi:10.1177/0040517509093436 [7] M. Taboada, T. Graber and L. Cisternas, “Sodium Carbonate Extractive Crystallization with Poly(Ethylene glycol) Equilibrium Data and Conceptual Process Design,” Industrial Engineering Chemistry Research, Vol. 43, 2004, pp. 835-838. doi:10.1021/ie030692a [8] A. Rochmadi, A. Prasetya and W. Hasokowati, “Mechanism of Microencapsulation with Urea-Formaldehyde Polymer,” American Journal of Applied Sciences, Vol. 7, No. 6, 2010, pp. 739-745. doi:10.3844/ajassp.2010.739.745