Morphology, structure and thermal stability of microencapsulated phase change material with copolymer shell

被引：124

作者：

Li, Wei ^{[1
,2
]}

Song, Guolin ^{[1
]}

Tang, Guoyi ^{[1
]}

Chu, Xiaodong ^{[1
]}

Ma, Sude ^{[1
]}

Liu, Caifeng ^{[2
]}

机构：

[1] Tsinghua Univ, Grad Sch Shenzhen, Shenzhen 518055, Peoples R China

[2] Hangzhou Dianzi Univ, Dept Packaging Engn, Hangzhou 310018, Peoples R China

来源：

ENERGY | 2011年 / 36卷 / 02期

关键词：

Microcapsule; Phase change material; Thermal stability; n-Octadecane; Energy storage; N-OCTADECANE; MICROPCMS;

D O I：

10.1016/j.energy.2010.12.041

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A series of microencapsulated phase change materials (MicroPCMs) with n-octadecane as core were successfully fabricated by suspension-like polymerization. The influence of initiator type and polymerization temperature on MicroPCMs were investigated systemically. The morphology of these microcapsules with different copolymer shells and various phase changing material (PCM) contents were observed by scanning electron microscopy (SEM). In addition, the core-shell structure and the shell thickness of microcapsules were also characterized by SEM. Thermal gravimetric analysis (TGA) curves indicate that the effects of different copolymer shell and various PCM contents on thermal stability of MicroPCMs were insignificant. Besides, SEM micrographs show that all of the MicroPCMs with various PCM contents remained intact after heat treatment at 200 degrees C for 30 min, however, all of the heat-treated MicroPCMs had no enthalpy as demonstrated by differential scanning calorimetry (DSC) curves. From above results, the weight loss of MicroPCMs may be caused by the penetration of decomposed gas of n-octadecane through the intact shells. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：785 / 791

页数：7

共 19 条

[1] Preparation, characterization, and thermal properties of microencapsulated phase change material for thermal energy storage [J].