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Preparation and Characterization of Glauber's Salt Microcapsules for Thermal Energy Storage

  • Tao Wang , Hui Li , Qu-Liang Lu , Nan Wu and Yong Jiang
Published/Copyright: January 6, 2017
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Tenside Surfactants Detergents
From the journal Tenside Surfactants Detergents Volume 54 Issue 1

Abstract

Microcapsules with modified polymethyl methacrylate (PMMA) as coating polymer and sodium sulfate decahydrate (Na2SO4 · 10H2O) as core materials were prepared using the emulsion polymerization and solvent evaporation methods. Chemical composition and microscopic structure of the synthesized PMMA-AA/Na2SO4 · 10 H2O phase change materials (PCMs) microcapsules were confirmed by Fourier-transform infrared spectroscopy, polarizing optical microscopy (POM), scanning electron microscopy (SEM). The thermal properties were analyzed by differential scanning calorimetry (DSC) in detail. The results show that the microcapsules are uniform and approximately spherical with an average diameter of about 3.5 μm. The melting point of the microcapsule is 31.5°C and the fusion heat is 182.8 J/g. This demonstrated that the prepared PMMA-AA/Na2SO4 · 10H2O microcapsules could be promising candidates for the design of novel energy-saving materials with good thermal energy storage application.

Kurzfassung

Mikrokapseln mit modifiziertem Polymethylmethacrylat (PMMA) als Coatingpolymer und Natriumsulfatdekahydrat (Na2SO4 · 10H2O) als Kernmaterial wurden mittels Emulsionspolymerisation und Lösemittelverdampfung hergestellt. Die chemische Zusammensetzung und die mikroskopische Struktur der Mikrokapseln aus dem synthetisierten Phasenübergangsmaterial PMMA-AA/Na2SO4 · 10H2O wurde mittels Fourier-Transformations-Infrarot Spektroskopie (FT-IR), der polarisierten Lichtmikroskopie (POM) und der Rasterelektronenmikroskopie (SEM) bestätigt. Die thermischen Eigenschaften wurden mit der Differentialabtastkalorimetrie (DSC) genau analysiert. Die Ergebnisse zeigen, dass die Mikrokapseln gleichförmig und annähernd kugelig mit einem durchschnittlichen Durchmesser von 3,5 μm sind. Die Mikrokapseln haben einen Schmelzpunkt von 31,5°C, ihre Schmelzwärme beträgt 182,8 J/g. Es wurde gezeigt, dass die hergestellten PMMA-AA/Na2SO4 · 10H2O-Mikrokapseln vielversprechende Kandidaten für die Planung neuer energiesparender Materialien mit guter thermischer Energiespeicherung sein könnten.

Key words: Phase change material; thermal energy storage; emulsion polymerization
Stichwörter: Phasenübergangsmaterial; Speicherung thermischer Energie; Emulsionspolymerisation
*Correspondence address, Prof. Yong Jiang, PhD, School of Chemistry and Chemical Engineering, Southeast University, Chemistry Building, Room 228 (O), 533 (Lab), No. 2 Dongnandaxue Road, Jiangning District, Nanjing, Jiangsu, 211189, P.R. China, Tel.: +86-13913993109, E-Mail: , Web: http://jianglab.net

Tao Wang was born in 1990. He is a postgraduate at Southeast University and he did his research in Chengxian College of Southeast University. His main scientific interest has been the synthesis and properties of phase change materials.

Hui Li was born in 1985. She is an associate professor at Chengxian College of Southeast University. Her main field of research is applications of polymers in industrial systems and green surfactant.

Qu-Liang Lu was born in 1982. He is a lecturer at Chengxian College of Southeast University. His main field of research is applications of polymers in industrial systems and physical chemistry.

Nan Wu was born in 1989. He is a postgraduate at Southeast University. His main field of research is applications of energy storage technology.

Prof. Yong Jiang was born in 1975. He graduated from Jilin University in 1996. He obtained his PhD in Institute of Chemistry, Chinese Academy of Sciences. During the year of 2005–2009 he did postdoc work at Duke University (Materials Science – Biomaterials) with Prof. Dr. Piotr E. Marszalek and Prof. Dr. Paul Modrich Center for Biological Inspired Materials and Material System in Department of Mechanical Engineering and Materials Science Pratt School of Engineering Duke University. His research interests lie in detecting DNA damage and repair process in single-molecule level, phase change materials for energy storage and polymer materials. At the moment he is department dean of Biotechnology and Pharmaceutical Chemistry Department in the School of Chemistry and Chemical Engineering in Southeast University. Meanwhile he is a supervision in Chengxian College of Southeast University.

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Received: 2016-06-02
Accepted: 2016-10-23
Published Online: 2017-01-06
Published in Print: 2017-01-20

© 2017, Carl Hanser Publisher, Munich

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https://doi.org/10.3139/113.110477
Keywords for this article
Phase change material; thermal energy storage; emulsion polymerization

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Review of the Year 2016
  5. Review
  6. Reaction Principle of Alcohol Ether Sulfonates by Sulfonated Alkylation Method – A Review
  7. Biosurfactants/Novel Surfactants
  8. Distribution Coefficients of Lipopeptide Biosurfactant in Different Solvents and its Separation from a Surfactant/Polymer Mixture in Aqueous Solutions
  9. Synthesis and Surface Properties of Anionic Vinylguaiacol Based Surfactants
  10. Novel Mesoporous ZSM-5 Zeolite with Disparate Morphologies Synthesized by a Double Long-alkyl-chain Organosilane Template
  11. Environmental Chemistry
  12. Preparation and Characterization of Glauber's Salt Microcapsules for Thermal Energy Storage
  13. Physical Chemistry
  14. Preparation and Characterization of a Humate Surfactant with Hydroxymethylation and Esterification Modification of Lignite
  15. Properties of Cationic Choline-Derived Surfactant with Photolabile Cinnamate Counterion
  16. Micellar Catalysis
  17. Solvent-Free Acetalization of Glycerol with n-Octanal using Combined Brønsted Acid-Surfactant Catalyst
  18. Synthesis
  19. Purification, Analysis and Surfactant Synthesis of Waste Cooking Oil
  20. Application
  21. Preparation and Properties of Novel Asymmetric Gemini Alkyl Polyglycosides
  22. Synthesis and Properties of Esterquats as Antibacterial Agent and Fabric Softener
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