Thermal Properties of Hexadecane Encapsulated in Poly(divinylbenzene) Particles

被引：22

作者：

Chaiyasat, Preeyaporn ^{[1
]}

Suzuki, Toyoko ^{[1
]}

Minami, Hideto ^{[1
]}

Okubo, Masayoshi ^{[1
]}

机构：

[1] Kobe Univ, Dept Sci & Chem Engn, Grad Sch Engn, Kobe, Hyogo 6578501, Japan

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2009年 / 112卷 / 06期

关键词：

differential scanning calorimetry (DSC); microencapsulation; thermal properties; MONODISPERSED POLYMER PARTICLES; EMULSION; SUSPENSION; STORAGE; MICROSPHERES; SIZE; CRYSTALLIZATION; WATER;

D O I：

10.1002/app.29648

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理];

摘要：

The thermal properties of n-hexadecane (HD) encapsulated in crosslinked capsule particles containing a water and/or air domain were studied from the viewpoint of heat-storage applications. The capsule particles were prepared by the microsuspension polymerization of divinylbenzene at 70 degrees C with the self-assembling of phase-separated polymer method that we developed. In the differential scanning calorimetric thermograms, pure HD had a single solidification temperature (T-s) peak at 15 degrees C, whereas the encapsulated HD containing a water domain had two peaks at 6 and 1 degrees C. That is, the encapsulated HD containing the water domain required a longer time and lower temperature to complete the solidification than pure HD, which was negative for heat-storage applications. However, once the particles were dried and the water domain was replaced with air, the problem with the partially lowered T, improved. The air domain was also found in the encapsulated HD core after solidification because of the shrinkage of HD. The presence of the air domain did not affect the thermal stability of the encapsulated HD. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 112: 3257-3266, 2009

引用

页码：3257 / 3266

页数：10

共 40 条

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