Volume 12, Issue 1
Preparation, Properties and Encapsulation of High Thermostability Phase-change Material

Guo-Qing Zhang, Chang-Wei Cai, Guo-Cheng Zhu, Lan Zhou, Guo-Jin Liu, Jiri Militky, Jaromir Marek, Mohanapriya VenkataramanJu-Ming Yao

Journal of Fiber Bioengineering & Informatics, 12 (2019), pp. 43-54.

Published online: 2019-03

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  • Abstract

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 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 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 C and high thermal evaporation temperature of 220 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 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.

  • Keywords

Esterification PCM Microcapsules Thermostability Latent Heat

  • AMS Subject Headings

  • Copyright

COPYRIGHT: © Global Science Press

  • Email address

mohanapriya.venkataraman@tul.cz (Mohanapriya Venkataraman)

yaoj@zstu.edu.cn (Ju-Ming Yao)

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  • TXT
@Article{JFBI-12-43, author = {Zhang , Guo-Qing and Cai , Chang-Wei 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 = {

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 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 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 C and high thermal evaporation temperature of 220 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 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.

}, issn = {2617-8699}, doi = {https://doi.org/10.3993/jfbim00307}, url = {http://global-sci.org/intro/article_detail/jfbi/13077.html} }
TY - JOUR T1 - Preparation, Properties and Encapsulation of High Thermostability Phase-change Material AU - Zhang , Guo-Qing AU - Cai , Chang-Wei AU - Zhu , Guo-Cheng AU - Zhou , Lan AU - Liu , Guo-Jin AU - Militky , Jiri AU - Marek , Jaromir AU - Venkataraman , Mohanapriya AU - Yao , Ju-Ming JO - Journal of Fiber Bioengineering and Informatics VL - 1 SP - 43 EP - 54 PY - 2019 DA - 2019/03 SN - 12 DO - http://doi.org/10.3993/jfbim00307 UR - https://global-sci.org/intro/article_detail/jfbi/13077.html KW - Esterification KW - PCM Microcapsules KW - Thermostability KW - Latent Heat AB -

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 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 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 C and high thermal evaporation temperature of 220 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 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.

Guo-Qing Zhang, Chang-Wei Cai, Guo-Cheng Zhu, Lan Zhou, Guo-Jin Liu, Jiri Militky, Jaromir Marek, Mohanapriya Venkataraman & Ju-Ming Yao. (2019). Preparation, Properties and Encapsulation of High Thermostability Phase-change Material. Journal of Fiber Bioengineering and Informatics. 12 (1). 43-54. doi:10.3993/jfbim00307
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