Synthesis of starch nanoparticles in a novel microemulsion with two ILs substituting two phases

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• 作者：Guangyin Ji ; Zhigang Luo ; Zhigang Xiao ; Xichun Peng
• 刊名：Journal of Materials Science
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：51
• 期：15
• 页码：7085-7092
• 全文大小：821 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Characterization and Evaluation Materials
  Polymer Sciences
  Continuum Mechanics and Mechanics of Materials
  Crystallography
  Mechanics
  
• 出版者：Springer Netherlands
• ISSN：1573-4803
• 卷排序：51

文摘

A novel ionic liquid microemulsion composed of 1-octyl-3-methylimidazolium bis ((trifluoromethyl)sulfonyl)imide ([Omim]NTf₂, an ionic liquid), water, surfactant 1-hexadecyl-3-methylimidazolium bromide ([C₁₆mim]Br, an ionic liquid), and cosurfactant n-butyl alcohol was prepared in our study. Pseudo-ternary phase diagram, conductivity measurement, and dynamic light scattering (DLS) analysis identified the microregion of microemulsion and confirmed the formation of water-in-ionic liquid (W/IL) region. Starch nanoparticles were prepared in the W/IL microemulsion with epichlorohydrin as cross-linker. Fourier transform infrared spectroscopy and X-ray diffraction characterized the structure of starch nanoparticles and demonstrated that cross-linking reaction happened among starch molecules. Scanning electron microscopy intuitively revealed that starch nanoparticles were spherical granules with smooth surface and fine dispersibility. Also, starch nanoparticles with a mean diameter of 93.2 nm and relatively concentrated size distribution were confirmed by DLS.Abbreviations([Omim]NTf₂1-Octyl-3-methylimidazolium bis ((trifluoromethyl)sulfonyl)imide[C₁₆mim]Br1-Hexadecyl-3-methylimidazolium bromideW/ILWater-in-ionic liquidW/OWater-in-oilIL/OIonic liquid-in-oilDLSDynamic light scatteringFTIRFourier transform infrared spectroscopyXRDX-ray diffractionSEMScanning electron microscopy