Polyurethane MicroPCMs Containing N-Octadecane Applied in Building Materials Synthesized by Interfacial Polycondensation: Thermal Stability and Heat Absorption Simulation

Abstract:

Polyurethane microcapsules containing phase change materials (microPCMs) of n-octadecane applied in building materials were successfully synthesized by an interfacial polymerization in aqueous styrene-maleic anhydride (SMA) dispersion with diethylene triamine (DETA) as a chain extender reacting with toluene-2, 4-diisocyanate (TDI). FTIR and SEM morphologies results confirmed that the shell of microcapsules was polyurethane. Thermal stability and heat absorption simulation were investigated by TGA, DSC and an environmental simulation apparatus. TGA data showed that the decomposition of the microcapsules began at approximately 339oC at 2oC/min of increasing temperature and 320oC under 20% humidity, respectively. Shell structure was affected by environmental changes including temperature and humidity. The microcapsules will be compact and service longer time in practical application under gentle environmental changes. Also, the thermal absorption characterization was performed on a self-made design to improve the understanding of the thermal properties of dried microcapsules in practical application.

• Periodical: Advanced Materials Research (Volume 96)
• Pages: 121-127
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.96.121
• Online since: January 2010
• Authors: Jun Feng Su, Sheng Bao Wang, Zhen Huang, Jin Sheng Liang
• Keywords: Building Material, Interfacial Polycondensation, Micro PCMs, Microcapsule, Polyurethane (PU), Thermal Stability

References

[1] S.J. Park and S. H. Kim: J. Colloid Interface. Sci. Vol. 271 (2004), p.336.

[2] R. C. Brown, J. D. Rasberry and S.P. Overmann: Powder Technol. Vol. 98 (1998), p.217.

[3] X.X. Zhang, Y.F. Fan, X.M. Tao and K.L. Yick: Mat. Chem. Phys. Vol. 88 (2004), p.300.

[4] R. Yanga, H. Xub andY. P Zhang. Sol. Energ: Mat. Solar C. Vol. 80 (2003), p.405.

[5] J. F Su, L.X. Wang and L. Ren: Colloid Polym. Sci. Vol. 284 (2005), p.224.

[6] J. F Su, L.X. Wang and L. Ren: J. Appl. Polym. Sci. Vol. 971 (2005), p.755.

[7] M.N. A, Uddin M. S, Zhu H. J: Inter. J. Solar Energy Vol. 20 (2000), p.227.

[8] Y. Shin, D.I. Yoo and K. Son: J. Appl. Polym. Sci. Vol. 97 (2005), p.910.

[9] D. Vroman and S. Giraud: React. Funct. Polym. Vol. 64 (2005), p.127.

[10] K. Hong and S. Park: Polym. Testing Vol. 19 (2000), p.975.

[11] K. Mizuno and Y. Taguchi: J. Chem. Engin. Japan Vol. 38 (2005), p.45.

[12] L. Torini, J.F. Argillier and N. Zydowicz: Macromolecules Vol. 38 (2005), p.3225.

[13] K. Hong and S. Park. React: Funct. Polym. Vol. 42 (1999), p.193.

[14] C.P. Chang, M. Kimura and T. Yamamoto: Colloid. Surface. B Vol. 30 (2003), p.123.

[15] A. Shulki and H. stover: J. Membr. Sci. Vol. 209 (2002), p.433.

[16] K. Mizuno and Y. Taguchi: J. Chem. Engin. Japan Vol. 38 (2005), p.45.

[17] X.X. Zhang, X.M. Tao, K.L. Yick and X.C. Wang: Colloid Polym. Sci. Vol. 282 (2004), p.330.

[18] J. F Su, L.X. Wang, L. Ren and Z. Huang: J. Appl. Polym. Sci. Vol. 102 (2006), p.4996.