摘要
通过对不同pH条件下不浸酸铬鞣剂C-2000进行凝胶色谱分析,结果发现:C-2000在存放过程中,分子总体上大小变化不明显,鞣液的分子还是小分子,表明鞣液成分的含量有所改变;若不浸酸鞣剂pH在3.5及4.5的环境中,其分子质量变化明显,分子大小更加均匀,因而表现出更好的鞣性,此时鞣剂可能既有单点配位又有双点和多点配位,为有桥键、螯合环的复杂的多碱及多酸混配型多核配合物。
The tanning liquor of no - pickling Chromitan C - 2000 was investigated with Gel Chromagraphy at different pH values. The results show that during storage of C -2000 tanning liquor, the change of molecular size is not apparent and main component of the complex is still the small molecule, which indicate that there are some changes among the content of the tanning solution. While at pH 3.5 and 4.5, the change of molecular size is obvious, and the distribution is more even, which indicates that the tannage has better tanning ability. At the moment, it is a mix - multinuclear complex crosslinking with bridge bond and chelate ring, which is maybe attributed to the presence of single and dual coordination as well as multiple coordination.
出处
《中国皮革》
CAS
北大核心
2007年第11期41-42,46,共3页
China Leather
基金
国家自然科学基金项目(批准号20476064)
关键词
不浸酸铬鞣剂
凝胶色谱
分析
no- pickling chrome tanning agent
Gel Chromagraphy
analysis
