文章摘要
聚苯乙烯包覆正十四醇微胶囊的制备及表征
Preparation and Characterization of Myristyl Alcohol Microcapsules Coated with Polystyrene
  
DOI:10.16865/j.cnki.1000-7555.2017.11.023
中文关键词: 微胶囊  正十四醇  相变材料  聚苯乙烯  乳液聚合法
英文关键词: microcapsules  myristyl alcohol  phase change materials  polystyrene  emulsion polymerization
基金项目:联盟计划智能纤维的关键技术(LM2015108)
作者单位
黄云峰1, 闵 洁1, 叶 琳2, 王丽萍2, 李帅涛2, 宋晓秋2 1. 东华大学 化学化工与生物工程学院上海 201620 2. 上海应用技术大学 香料香精技术与工程学院上海 201418 
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中文摘要:
      选用过硫酸钾(K2S2O8)为引发剂,司班80(Span 80)和吐温80(Tween80)为复配乳化剂,聚乙烯吡咯烷酮K30(PVP-K30)为分散剂,季戊四醇四丙烯酸酯(PETA)为交联剂,采用乳液聚合法制备出了以正十四醇(MA)为芯材, 聚苯乙烯(PS)为壁材的正十四醇-聚苯乙烯相变微胶囊(MA/PS微胶囊);通过差示扫描量热仪、扫描电镜、傅里叶变换红外光谱仪和热重分析仪等仪器对制备的微胶囊进行检测表征。结果表明,当聚乙烯吡咯烷酮K30和复配乳化剂(m(Span80)∶m(Tween80)=3∶13)加入量分别为正十四醇质量的5%和4%,过硫酸钾和季戊四醇四丙烯酸酯加入量分别为苯乙烯单体质量的10%和37.5%,芯壁比为2.5∶1,搅拌速度为1000 r/min 时,所制备的MA/PS微胶囊具有良好的热稳定性和致密性。
英文摘要:
      Myristyl alcohol-polystyrene phase change microcapsules (MA/PS microcapsules) were prepared by emulsion polymerization with myristyl alcohol (MA) as core material, polystyrene (PS) as outer shell, potassium peroxodisulfate (K2S2O8) as initiator, Span 80 and Tween 80 as complex emulsifiers, the polyvinyl pyrrolidone K30 (PVP-K30) as dispersant and pentaerythritol tetraacrylate (PETA) as crosslinking agent. The microcapsules were characterized by differential scanning calorimetry (DSC), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analyzer (TGA), et al. The results show that the prepared MA/PS microcapsules have good thermal stability and compactness when the amount of polyvinylpyrrolidone K30 and compound emulsifier (m(Span80)∶m(Tween80)=3∶13) is 5% and 4% of the mass of myristyl alcohol, respectively, potassium persulfate and pentaerythritol tetraacrylate are added 10% and 37.5% of the mass of styrene monomer respectively, the ratio of core to wall is 2.5∶1 and the stirring speed is 1000 r/min.
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