有机配体对铝-锆配合物鞣制性能及环境效益的影响  

Effects of Organic Ligands on Tanning Performance and Environmental Benefits of Aluminum-Zirconium Complexes

作　　者：薛鹏博 李奇军 余跃[1,2] 汪徽 王亚楠 XUE Pengbo;LI Qijun;YU Yue;WANG Hui;WANG Yanan(National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu 610065,China;Key Laboratory of Leather Chemistry and Engineering of Ministry of Education,Sichuan University,Chengdu 610065,China;College of Biomass Science and Engineering,Sichuan University,Chengdu 610065,China)

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 [2]四川大学皮革化学与工程教育部重点实验室,四川成都610065 [3]四川大学轻工科学与工程学院,四川成都610065

出　　处：《皮革科学与工程》2024年第4期10-18,共9页Leather Science and Engineering

基　　金：四川省科技计划项目(2022JDRC0104);国家自然科学基金项目(22208227);果类废弃物资源化四川省高校重点实验室开放课题资助(GZKF2301)。

摘　　要：采用氧化木质素磺酸钠(OSL)、酒石酸(TA)和氧化淀粉(OST)与铝锆盐(AZ)进行配位鞣制,并与传统铬(Cr)鞣进行对比,评估了4种鞣制技术的鞣革性能、坯革性能和环境效益。OSL-AZ与皮胶原以配位键结合为主,辅以OSL的磺酸基、羧基、酚羟基和苯环与皮胶原间的离子键、氢键和疏水键作用,促使OSL-AZ在皮胶原间形成大分子刚性交联网络,鞣革的收缩温度高达88.4℃,等电点达到7.54,对染整化学品吸收率超过84%,最终获得的坯革物理性能优良,仅次于Cr鞣坯革。TA和OST无磺酸基、酚羟基和刚性苯环,与皮胶原的相互作用弱,故其铝-锆配合物的鞣制性能不及OSL-AZ。OSL-AZ鞣革和废水的生物降解性明显优于传统Cr鞣革和废水。综上,OSL-AZ鞣制技术是一种实用环保的制革技术。Oxidized sodium lignosulfonate(OSL),tartaric acid(TA),and oxidized starch(OST)were used as the ligands of aluminum-zirconium salt(AZ)for leather tanning.These complex tanning systems were compared with conventional chrome(Cr)tanning system in terms of the performance of tanned leather,the performance of crust leather,and the environmental benefits.OSL-AZ combines with collagen mainly by forming coordination bonds.Meanwhile,OSL forms ionic,hydrogen,and hydrophobic bond interactions with collagen through its sulfonic acid group,carboxyl group,phenolic hydroxyl group,and hydrophobic benzene ring.Thus,OSL-AZ forms a rigid macromolecule crosslinking network among collagen fibers.The OSL-AZ tanned leather has a shrinkage temperature high up to 88.4℃,an isoelectric point up to 7.54,and an uptake rate for post-tanning chemicals over 84%,thereby resulting in excellent physical properties of OSL-AZ crust leather,which is second only to Cr crust leather.TA and OST without sulfonic acid group,phenolic hydroxyl group and rigid benzene ring exhibit relatively weak interaction with leather collagen.As a result,the tanning performance of TA-AZ and OST-AZ is worse than that of OSL-AZ.The biodegradability of OSL-AZ tanned leather and wastewater is obviously better than that of traditional Cr tanned leather and wastewater.Therefore,OSL-AZ tanning technology is a practical and environmentally friendly leather manufacturing technology.

关 键 词：无铬鞣 氧化木质素磺酸钠 铝鞣剂 锆鞣剂 配体 配合物 

分 类 号：TS543[轻工技术与工程—皮革化学与工程]