论文部分内容阅读
本次试验采用层析法,紫外分光光度法,红外光谱法,对植—铝结合鞣中的水解类鞣质与铝的作用进行了研究。研究表明,棓酰类多元酚可与铝形成络合物,其络合物是铝和棓酰基中苯三酚的邻位二羟基形成的,它是稳定的五员螯合环结构;同时对试验中的多元酚—铝络合物的组成进行了计算和结构推测,结果表明,多棓酰型水解类鞣质与铝可能形成多个棓酰多元酚—铝络合物的结构,这是一种植—铝结合鞣中交联和网状交联的形式;此外,采用层析法试验,制样方法、展开剂和显色剂均与Sykes的试验不相同,结果与Sykes的层析试验的结果也不相同,试验表明,在我们的试验条件下,棓酰型多元酚能与硫酸铝发生作用,即形成络合物。
In this experiment, the effect of hydrolyzed tannin and aluminum in plant-aluminum tanning was studied by means of chromatography, ultraviolet spectrophotometry and infrared spectroscopy. Studies have shown that galloyl polyphenols can form complexes with aluminum, the complex is aluminum and acenaphthene ortho dihydroxy formation of pyrogallol, which is a stable five-membered chelate ring structure; the same time The composition of the polyphenolic-aluminum complex in the experiment was calculated and the structure was estimated. The results show that the poly-acetylated hydrolyzed tannins and aluminum may form the structure of a plurality of galloylphenol-aluminum complexes, which is A cross-linked and networked cross-linked form of vegetable-aluminum tanning. In addition, the chromatographic test, sample preparation method, developing solvent and developer were all different from those of Sykes. The results were compared with those of Sykes The results are not the same, the test showed that under our experimental conditions, 棓-type polyphenols and aluminum sulfate can interact, that is, the formation of complexes.