@Article{JFBI-12-1,
author = {Zhang, Guo-Qing and Chang-Wei, Cai and Zhu, Guo-Cheng and Zhou, Lan and Liu, Guo-Jin and Militky, Jiri and Marek, Jaromir and Venkataraman, Mohanapriya and Yao, Ju-Ming},
title = {Preparation, Properties and Encapsulation of High Thermostability Phase-change Material},
journal = {Journal of Fiber Bioengineering and Informatics},
year = {2019},
volume = {12},
number = {1},
pages = {43--54},
abstract = {<p>Microcapsules containing phase change materials (PCM) have been attracting much attention due to
its applications in many energy storage fields. However, most PCM microcapsules have relatively low
thermostability with an onset decomposition temperature of about 150 <sup>◦</sup>C, which to some extent restricts
their applications. In this study, high chain ester of dodecanol laurate was first synthesized with raw
materials of 1-dodecanol and lauric acid by esterification reaction under catalysis, and then the ester as
core material was encapsulated using PMMA by emulsion polymerization. The resultant products,
including the ester and the PCM microcapsules, were respectively characterized by using infrared
spectroscopy (IR), differential scanning calorimeter (DSC), thermogravimetry (TG), laser particle size
analyzer and scanning electron microscope (SEM). The synthesized dodecanol laurate have a high
purity according to IR spectrum analysis and suitable phase temperature range of 22-30 <sup>◦</sup>C from DSC
measurement. In addition, the ester also showed good thermal properties with a latent heat of 206
J/g, small super-cooling degree of 0.5 <sup>◦</sup>C and high thermal evaporation temperature of 220 <sup>◦</sup>C, which
would be very suitable for application in PCM energy storage materials. Using the above ester as
core material, the PCM microcapsules were successfully fabricated by emulsification and polymerization
processes. The prepared microcapsules showed perfect spherical shape with size about 865 nm and high
heat storage performance with a latent energy of 118 J/g. Owing to high evaporation temperature of
ester core material itself and further encapsulation, the prepared PCM microcapsules showed higher
thermostability. TG results suggested that the microcapsules had a high onset weightless temperature
which was over 252 <sup>◦</sup>C, it was a significant increment comparing to those PCM microcapsules reported
by most literatures. Moreover, thermo-regulating cotton fibers were fabricated by using the above PCM
microcapsules. It’s seen that the PCM microcapsules deposited on the fibers uniformly and the fibers
had a latent heat of 20.18 J/g.</p>},
issn = {2617-8699},
doi = {https://doi.org/10.3993/jfbim00307},
url = {https://global-sci.com/article/86442/preparation-properties-and-encapsulation-of-high-thermostability-phase-change-material}
}