Preparation and characterization of Phase change material microcapsules by a core-shell-like emulsion polymerization method

2015 Global Conference on Polymer and Composite Materials

材料科学;化学

Ding, Li-Ming^1 ; Pei, Guang-Ling^1

School of Materials Science and Engineering, Beijing Institute of Fashion Technology, Beijing

100029, China^1

关键词: Average particle size;    Crystallization enthalpy;    Crystallization temperature;    Differential scanning calorimeters;    High resistance;    Laser particle size analyzer;    Melting enthalpy;    Methylacrylic acids;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/87/1/012006/pdf
DOI  :  10.1088/1757-899X/87/1/012006

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Phase change material microcapsules (MicroPCMs) were synthesized by a coreshell-like emulsion polymerization method. Styrene and methylacrylic acid copolymer (PS- MAA) was used as a wall material, and paraffin was used as a core material in order to prepare spherical, high resistance and high enthalpy MicroPCMs. Scanning Electron Microscope (SEM), laser particle size analyzer, Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetry (TG) and Differential Scanning Calorimeter (DSC) were employed to characterize the MicroPCMs. The results indicated that the average particle size of MicroPCMs was 42.29 μm, and the content of paraffin within microcapsules was 57.6%. The melting temperature and crystallization temperature were 30.7°C and 25.2°C.The melting enthalpy and crystallization enthalpy were -84.1 J/g and 91.3 J/g, respectively.