相轉移複合材料(PMMA-Octadecane-AL2O3)微膠囊的製備及溫度調節之應用

Preparation and Application of Composite Phase Change Material Microcapsule (PMMA-Octadecane-AL2O3) in Temperature Regulation.

張秦瑋(Chin-Wei Chang)

指導教授 ： 邱文英

國立臺灣大學/工學院/化學工程學研究所/碩士(2014年)

https://doi.org/10.6342/NTU.2014.02841

摘要

本研究以甲基丙烯酸甲酯(MMA)、甲基丙烯酸(MAA)為共單體，乙二醇二甲基丙烯酸(EGDMA)為交聯劑，過氧十二醯(LPO)為起始劑，並以聚乙烯醇(PVA)作為界面穩定劑，利用懸浮聚合法包覆熔點為28 oC正十八烷，製備出以P(MMA-MAA)為殼層的相轉移材料微膠囊。此外導入以3-(甲基丙烯酰氧)丙基三甲氧基矽烷(3-Methacryloxypropyltrimethoxysilane)改質的奈米氧化鋁顆粒於油相中，製備出以P(MMA-MA-AL2O3)為殼層的相轉移材料微膠囊。將製得之微膠囊使用掃描式電子顯微鏡觀察其粒徑大小和表面型態，以低溫微差熱掃瞄分析儀量測其潛熱值、冷熱起始溫度，以及冷熱峰值溫度和正十八烷包覆率，此外，以熱重示差同步掃描分析儀來分析其熱性質以及氧化鋁含量，並以微膠囊乳液的形式實際測量其溫度調節的效果。

關鍵字

相轉移材料 ； 微膠囊 ； 有機-無機複合殼層 ； 溫度調節

並列摘要

In this study, microcapsules containing n-Octadecane (melting point 28 oC) using methyl methacrylate (MMA)- methacrylic acid (MAA)-Ethylene glycol dimethylacrylate (EGDMA) co-polymer shells were synthesized by suspension-like polymerization. After introducing 3-Methacryloxypropyltrimethoxysilane-modified AL2O3 into the oil phase, , microcapsules with P(MMA-MAA-AL2O3) crosslinking shell was prepared. The surface morphology, diameters, phase change properties and thermal decomposition temperature of microcapsules were investigated by using Scanning Electronic Microscope (SEM), Differential Scanning Calorimeter (DSC), and Thermogravimetric Analysis (TGA). The effect of microcapsules on temperature regulation has been observed.

並列關鍵字

phase change materials ； microcapsule ； inorganic-organic composite shell ； temperature regulation

參考文獻

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