松香马来酸酐衍生物的制备及生物活性

合成了3类共5种松香马来酸酐衍生物,并进行了结构表征。生物活性测定结果表明化合物2a、2b和2c均具有植物激素作用。化合物2a～2c的合成采用无溶剂绿色化学的合成方法,合成反应操作简便,产率达90%,适合规模化生产。

温敏性聚乙二醇-马来酸酐松香聚酯的制备及其结构与聚集形态转变研究

合成了具有生物相容性的马来酸酐松香单乙酯和聚乙二醇-马来酸酐松香聚酯,并利用红外、核磁等方法对产物进行表征。采用弹性光散射探讨了聚乙二醇-马来酸酐松香聚酯在不同温度下的结构转变行为及生物相容性。当聚乙二醇-马来酸酐松香聚酯为临界胶束浓度时,升温过程中胶束发生再次聚集;而当质量浓度小于临界胶束浓度时,单根分子链在升温过程中发生聚集和紧缩。分子链的结构转变与聚集皆为温度可逆过程。因此,在分子水平上探讨了分子链的聚集行为与结构转变,为温敏性聚乙二醇-马来酸酐松香聚酯在表面活性与载药领域的应用提供理论基础。

Study on Preparation of Waterproofing Agent for Mineral Wool Board from Modified C_9 Petroleum Resin

The modified petroleum resin emulsion prepared from the C9petroleum resin was modified with maleic anhydride.The effects of maleic rosin and maleic anhydride addition level,the modification time and the alkali liquor on the properties of the emulsion were discussed.The results showed that the optimum process conditions covered:a maleic anhydride mass fraction of 1.5%,a maleic rosin mass fraction of 10%,a KOH mass fraction of 1%,a petroleum resin modification temperature of 200℃,a petroleum resin modification duration of 3 h,and a modified petroleum resin emulsion/wax emulsion mixing ratio of 1:1.The particle size of modified petroleum resin emulsion prepared under these conditions was equal to 104.166μm.