采用溶液包结法利用α-环糊精(α-CD)对1-甲基环丙烯(1-MCP)进行包合,将气态的1-MCP固态化形成白色粉末状的1-MCP/α-CD稳定包合物,使之便于保存和应用. 利用拉曼光谱(Raman)、X射线粉末衍射光谱(XRD)、气质联用测试仪(GC-MS)、核磁谱仪(NMR)等测试技术对所得包合物的结构和组成进行表征,证明了包合物的形成,同时提出了1-MCP/α-CD包合物中1-MCP含量的快速测定方法,以该法测定的包合物中1-MCP的有效质量分数约为3.6%. 对1-MCP和α-CD的包合机理进行了探讨,认为1-MCP和α-CD按摩尔比1∶ 1进行包合.
The inclusion complex of 1-methylcyclopropene(1-MCP) encapsulated by α-cyclodextrin(α-CD) was synthesized by inletting 1-MCP gas into the α-cyclodextrin saturated solution. Raman spectroscopy, X-ray powder diffraction(XRD), gas chromatography/mass spectrometry(GC-MS) and nuclear magnetic resonance spectrometry(NMR) methods were used to verify the existence of 1-MCP/α-CD inclusion complex. A rapid determination method was proposed for measuring the content of 1-MCP in the inclusion complex, which was about 3.6%. Moreover, the formation mechanism of the inclusion complex was also discussed. The inclusion ratio was suggested to be a 1:1 ratio of 1-MCP and α-CD complexation.
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