醛酸高分子鞣剂的合成及其鞣性的研究

Study on the synthesis and tanning property of aldehyde-acid polymer tanning agent

以丁烯醛为共聚单体 ,与丙烯酸通过水溶液共聚法合成了分子链上同时含醛、酸功能基团的高分子鞣剂—醛酸高分子鞣剂 (PAC) ,采用DSC、13 C—NMR及IR等方法确证了它的结构 ,并对其鞣性进行了研究。试验结果表明 :醛酸高分子鞣剂 (PAC)具有较好的鞣性 ,5 %的PAC可使浸酸皮的收缩温度上升 1 8℃。

Aldehyde acid polymer tanning agent (PAC) was synthesized from acrylic acid and crotonaldehyde in water and its structure was characterized by IR, 13 C—NMR and DSC.The results show PAC can improve the thermal shrinkage temperature of pickling pigskin distinctly.It was found that the thermal shrinkage temperature of pickling pigskin,tanned by 5% PAC,rose as high as 18℃.