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题名: Microencapsulation of n-eicosane as energy storage material synthesized by interfacial polymerization
作者: Lan Xiao-Zheng;  Yang Chang-Guang;  Tan Zhi-Cheng;  Sun Li-Xian;  Xu Fen
关键词: phase change material ;  n-eicosane ;  microcapsule ;  interfacial polymerization
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 2007-04-01
DOI: 10.3866/PKU.WHXB20070425
卷: 23, 期:4, 页:581-584
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: For heat energy storage application, polyurea microcapsules containing phase change material, n-eicosane, were synthesized by interfacial polymerization method with toluene -2,4-diisocyanate (TDI) and ethylene diamine (EDA) as monomers in an emulsion system. Poly (ethylene glycol) octyl-phenyl ether (OP), a nonionic surfactant, was the emulsifier for the system. The experiments indicated that TDI was reacted with EDA in a mass ratio of 1.9 to 1. The sizes of microcapsules were analyzed with TEM and laser particle analyzer, which showed the empty microcapsules were about 0.2 mu m and those containing n-eicosane were 2-6 mu m. FTIR spectra proved the formation of wall material, polyurea, from the two monomers, TDI and EDA. Encapsulation efficiency of n-eicosane was about 75%. Microcapsules of n-eicosane melted at a temperature close to that of n-eicosane, while its stored heat energy varied with the amount of core material n-eicosane. Thermogravimetric analysis revealed that the core material n-eicosane, micro-n-eicosane, and wall material polyurea could withstand temperatures up to 130 degrees C, 170 degrees C, and 270 degrees C, respectively.
关键词[WOS]: PHASE-CHANGE MATERIAL ;  POLYUREA ;  SYSTEM
语种: 英语
WOS记录号: WOS:000245883400025
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140480
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
2.Shandong Agr Univ, Coll Chem & Mat Sci, Tai An 271018, Shandong Provin, Peoples R China

Recommended Citation:
Lan Xiao-Zheng,Yang Chang-Guang,Tan Zhi-Cheng,et al. Microencapsulation of n-eicosane as energy storage material synthesized by interfacial polymerization[J]. ACTA PHYSICO-CHIMICA SINICA,2007,23(4):581-584.
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