Thermal Conductivity of Paraffin Wax as Microencapsulated Phase Change Material (PCM) Coated on Polyester Fabric

Abstract:

This research works involves the production of microencapsulated phase change material (PCM) in which paraffin wax was used as the core components with sebacyol chloride (SC) and hexamathylene diamine (HMD) as the shell component. The microencapsulated PCM was characterized using Fourier Transform Infrared (FTIR) and scanning electron microscopy (SEM). Thermal energy storage capacity was measured by differential scanning calorimetry (DSC) while thermal conductivity was measured by thermal gravimetric analysis (TGA). The microencapsulated PCM were found to have a regular spherical shape with a size of 50µm while FTIR indicated that the microencapsulation process occurs due to the existence of alkyl group (C-H) and carbonyl group (C=O) in the spectra. DSC analysis shows that the paraffin start to melt at 47°C to 56°C with thermal energy storage capacity of 140.097 J/g and 114.766 J/g for sample A and sample B respectively. It was found that higher value of thermal energy storage resulting to lower thermal conductivity, which can be used as a thermal barrier in various applications.

• Periodical: Advanced Materials Research (Volume 1134)
• Pages: 160-164
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1134.160
• Online since: December 2015
• Authors: Abu Bakar Mahamad Dom, Najua Tulos*, Wan Yunus Wan Ahmad, Ahmad Faiza Mohd, Mohamad Faizul Yahya
• Keywords: Differential Scanning Calorimetry, FTIR, Microencapsulated Phase Change Material (PCM), Paraffin Wax, Thermal Conductivity

References

[1] M. Owais, R. Siddiqui, and D. Sun, Computational analysis of effective thermal conductivity of microencapsulated phase change material coated composite fabrics, J. Compos. Mater. p.1–12, (2014).

DOI: 10.1177/0021998314545193

[2] S. Mondal, Phase change materials for smart textiles – An overview, vol. 28, p.1536–1550, (2008).

[3] L. Sánchez-silva, P. Sánchez, and J. F. Rodríguez, Effective Method of Microcapsules Production for Smart Fabrics.

[4] T. -C. Ling and C. -S. Poon, Use of phase change materials for thermal energy storage in concrete: An overview, Constr. Build. Mater. vol. 46, p.55–62, Sep. (2013).

DOI: 10.1016/j.conbuildmat.2013.04.031

[5] T. Karlessi, M. Santamouris, a. Synnefa, D. Assimakopoulos, P. Didaskalopoulos, and K. Apostolakis, Development and testing of PCM doped cool colored coatings to mitigate urban heat island and cool buildings, Build. Environ. vol. 46, no. 3, p.570–576, Mar. (2011).

DOI: 10.1016/j.buildenv.2010.09.003

[6] I. Cerón, J. Neila, and M. Khayet, Experimental tile with phase change materials (PCM) for building use, vol. 43, p.1869–1874, (2011).

DOI: 10.1016/j.enbuild.2011.03.031

[7] G. Nelson, Application of microencapsulation in textiles., Int. J. Pharm., vol. 242, no. 1–2, p.55–62, Aug. (2002).

[8] T. Kousksou, A. Jamil, T. El Rhafiki, and Y. Zeraouli, Solar Energy Materials & Solar Cells Paraffin wax mixtures as phase change materials, Sol. Energy Mater. Sol. Cells, vol. 94, no. 12, p.2158–2165, (2010).

DOI: 10.1016/j.solmat.2010.07.005

[9] Z. Jin, Y. Wang, J. Liu, and Z. Yang, Synthesis and properties of paraffin capsules as phase change materials, Polymer (Guildf)., vol. 49, no. 12, p.2903–2910, Jun. (2008).

DOI: 10.1016/j.polymer.2008.04.030

[10] M. Hossein and R. Mazeyar, Thermal Characterization and Flammability of Polyester Fiber Coated with Nonionic and Cationic Softeners, p.595–603, (2011).

DOI: 10.1007/s11743-011-1255-6

[11] M. Mohammadi, P. Banks-Lee, and P. Ghadimi, Determining Effective Thermal Conductivity of Multilayered Nonwoven Fabrics, Text. Res. J., vol. 73, no. 9, p.802–808, Sep. (2003).

DOI: 10.1177/004051750307300909

[12] N. Mao and S. J. Russell, The Thermal Insulation Properties of Spacer Fabrics with a Mechanically Integrated Wool Fiber Surface, Text. Res. J., vol. 77, no. 12, p.914–922, (2007).

DOI: 10.1177/0040517507083524

[13] A. Khoddami, M. I. Soleimani, and H. Gong, Effects of finishing on the mechanical and thermal properties of fabrics from wool and hollow polyester fibres, Text. Res. J., vol. 81, no. 19, p.2006–2016, Dec. (2011).

DOI: 10.1177/0040517511407381