本文選題：塔拉單寧 + 高度氧化降解�。� 參考：《溫州大學》2017年碩士論文

【摘要】：本論文主要研究了塔拉單寧的高度氧化降解的改性方法,通過對降解產(chǎn)物的可控降解,實現(xiàn)科學化,并對降解產(chǎn)物的分子量進行測量,然后進行金屬離子的配位研究,制備無鉻鞣劑。通過塔拉單寧降解物與金屬離子配位反應的pH值以及其他物性變化,結合產(chǎn)物的紅外圖譜、紫外圖譜、凝膠色譜(GPC)曲線,對降解程度和配位結果進行研究。為實施塔拉降解物與金屬配位產(chǎn)物的鞣制提供條件,比較降解物與金屬離子配位的反應性質、配位能力的差異。通過控制氧化劑(H202)的量,可以得到不同階段的分子量的塔拉降解產(chǎn)物,然后再與鋯、鈦、鋁的硫酸鹽進行配位反應,得到相應的金屬配位產(chǎn)物,最后將得到的金屬配位產(chǎn)物用于綿羊皮的鞣制過程,通過鞣制后的皮革的物化性能,進而判斷金屬配位產(chǎn)物的鞣制效果。實驗表明,塔拉單寧在堿性環(huán)境下,使用H2O2降解,可以得到一定分子量范圍內的產(chǎn)物。在與金屬離子配位過程中,各金屬鹽的配位條件存在一些差異,但是可以得知金屬鹽都能與塔拉降解物進行配位反應,最后的鞣制過程中,可以知道在使用150%的H2O2降解后的產(chǎn)物與金屬鹽配位產(chǎn)物鞣制效果最佳,可以得到一些與鉻鞣相近的皮革樣品。因此,塔拉單寧的高度降解物與金屬鹽的配位產(chǎn)物,是可以作用于皮革的鞣制過程,對于無鉻鞣劑的開發(fā)和清潔化制革工藝具有參考意義。本論文主要包括:塔拉粉的提純、提純產(chǎn)物的H2O2深度氧化降解、降解產(chǎn)物的分子量的測量、降解產(chǎn)物與鋯、鈦、鋁的配位研究、皮革鞣制,比較各種鞣制結果,從而得到較為理想的塔拉改性金屬鞣劑,為實現(xiàn)無鉻化制革提供一些指導作用。
[Abstract]:This paper mainly studied the modified method of high oxidation degradation of Tara tannin. Through the controllable degradation of the degradation products, it was realized scientifically, and the molecular weight of the degradation products was measured. Then the metal ion coordination was carried out to prepare the chrome free tanning agent. The pH value of the coordination reaction of the Tara tannin degradation products with the metal ions and the results were also studied. The changes in physical properties, combined with the infrared Atlas of the products, the UV atlas and the gel chromatography (GPC) curves, were used to study the degradation degree and coordination results. The conditions for the tanning of Tara degradation products and metal coordination products were provided, the reaction quality of the degrading and metal ion coordination, the difference of coordination ability and the control of the amount of H202 were compared. The molecular weight of Tara degradation products at different stages can be obtained, then the coordination reaction with zirconium, titanium and aluminum sulfate can be obtained, and the corresponding metal coordination products are obtained. Finally, the metal coordination products are used in the tanning process of sheep skin, and the physical and chemical properties of the tanned leather are obtained, and then the tanning effect of the metal coordination products is determined. The experiments show that Tara tannins can be degraded in the alkaline environment with H2O2 degradation and can be obtained in a certain range of molecular weight. There are some differences in the coordination conditions of metal salts in the process of coordination with metal ions, but it can be found that the metal salts can be coordinated with the Tara degradation products. The final tanning process can be known to be in the process of tanning. The optimum tanning effect of 150% H2O2 degradation products and metal salt coordination products can be obtained. Some leather samples which are similar to chrome tanning can be obtained. Therefore, the coordination products of the high degradation products of Tara tannins and metal salts are the tanning processes that can be used in the leather, and have a reference to the development of chrome free tanning agents and the cleaning process. This paper mainly includes: the purification of Tara powder, the deep oxidation degradation of the purified product, the measurement of the molecular weight of the degradation products, the coordination of the degradation products with zirconium, titanium, aluminum, leather tanning, and the comparison of various tanning results, thus getting the more ideal Tara modified metal tanning agent, which can provide some guidance for the realization of the chromic tannery for the realization of chromic leather.

【學位授予單位】：溫州大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TQ946;O641.4

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