界面聚合法制备十二醇相变微胶囊的工艺及性能

doi:10.11896/cldb.20010089

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Abstract To overcome the instability and difficulty in storage of low temperature phase change materials, microencapsulated phase change materials (MEPCMs) were synthesized via interfacial polymerization. Dodecanol, which exhibits low phase change temperature and great phase change latent heat was employed as the core material. However, dodecanol is capable of reacting with isocyanate groups. The reaction rate study of various isocyanates with dodecanol indicates that hexamethylene diisocyanate (HDI) can be used as the shell monomer for the preparation of microcapsules. Effect of the pH value of the 1,3-propanediamine aqueous solutions on the morphology of MEPCMs was explored. When the pH of the 1,3-propanediamine aqueous solution is about 9.0, large amounts of microcapsules were obtained with an average diameter of about 2.0 μm, core content of 79.8%, melting temperature of 24.47 ℃ and melting enthalpy of 142.3 J/g. In comparison to the in-situ polymerization, the MEPCMs prepared by the interfacial polymerization show better compactness, leading to a decreased permeability in methanol by 40%. Enhanced stability of MEPCMs effectively improves the issues of leakage, storage and transport for low temperature phase change materials.

Key words： interfacial polymerization in-situ polymerization dodecanol low temperature phase change microcapsules compactness

Published: 28 January 2021

CLC number:

TB34

Fund:The Postdoctoral Science Foundation of China (2017T100800).

About author:: Yanchang Liu, a master of Tianjin University, mainly engaged in phase change microcapsules research.
Xueqin Zhoureceived her Ph.D. degree in Zhejiang University, and work as a postdoctor in Tianjin University. She has been a professor and doctoral supervisor at School of Chemical Engineering and Technology, Tianjin University. She is mainly engaged in research of functional micro/nanomaterials, organic optoelectronic materials, dyes and pigments.

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	LIU Yanchang
	LOU Hongfei
	LIU Dongzhi
	LI Wei
	ZHOU Xueqin

Cite this article:

LIU Yanchang,LOU Hongfei,LIU Dongzhi, et al. Preparation and Properties of Dodecanol Microcapsules by Interfacial Polymerization[J]. Materials Reports, 2021, 35(2): 2157-2160.

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http://www.mater-rep.com/EN/10.11896/cldb.20010089 OR http://www.mater-rep.com/EN/Y2021/V35/I2/2157

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