木质素磺酸钠作还原剂制备铬鞣剂  

Preparation of Chrome Tanning Agent Using Sodium Lignosulfonate as Reducing Agent

作　　者：彭洲[1] 廖学品[1] 石碧[1] 

机构地区：[1]四川大学制革清洁技术国家工程实验室,四川成都610065

出　　处：《皮革科学与工程》2011年第1期9-13,33,共6页Leather Science and Engineering

基　　金：国家科技支撑计划(2006BAC02A09)资助项目

摘　　要：利用木质素磺酸钠作为还原剂制备了铬鞣剂Cr-LGS。通过UV-Vis、FT-IR和碱法滴定等方法探讨了这类铬鞣剂的化学组成和耐碱稳定性,并且比较了自制铬鞣剂Cr-LGS与糖还原的商品铬鞣剂的组成差异和性质区别。结果表明,木质素磺酸钠是一类理想的Cr(VI)还原剂,用其制备的铬鞣剂在不外加蒙囿剂的情况下已具有良好的自蒙囿作用。较系统地研究了铬鞣剂Cr-LGS的优化制备条件。A new chrome tanning agent,Cr-LGS,was prepared by using sodium lignosulfonate as the reducing agent.The chemical composition and alkaline resistance of Cr-LGS were investigated by UV-Vis spectrum,FT-IR spectrum and alkaline titration.Meanwhile the differences of composition and property between Cr-LGS and the commercial chrome tanning agent using sugar as reducing agent were compared.It was proved that sodium lignosulfonate is an ideal reducer for Cr（VI）,and the newly prepared chrome tanning agent possesses satisfactory self-masking behavior without addition of other masking agent.The conditions for preparation of sodium lignosulfonate reduced chrome tanning agent were optimized.

关 键 词：木质素磺酸钠 还原剂 铬鞣剂 蒙囿作用 

分 类 号：TS529.2[轻工技术与工程—皮革化学与工程]