端羧基超支化聚合物-铝无铬鞣剂的制备及应用  

Synthesis and Application of Hyperbranched Polymer with Terminal Carboxyl Groups-Al Chrome-free Tanning Agent

作　　者：强涛涛[1,2] 陈小珂[1,2] 王学川[1,2] 孙森[1,2] 

机构地区：[1]陕西科技大学轻化工助剂化学与技术教育部重点实验室,陕西西安710021 [2]陕西科技大学合成革与皮革绿色化学品研究所,陕西西安710021

出　　处：《精细化工》2012年第11期1098-1102,1120,共6页Fine Chemicals

基　　金：中国博士后科学基金资助项目(2012M521733);咸阳市科技计划项目(2011K10-11);陕西省教育厅科技计划项目(12JK0594);西安市未央区科技计划项目(201118);陕西科技大学研究生创新基金~~

摘　　要：根据超支化聚合物官能团度大,反应活性高的特点,利用端羧基超支化聚合物(HPAE-C)的末端羧基与Al3+络合,制备一种新型的无铬鞣剂(HPC-Al),通过单因素实验考察了反应条件对成革收缩温度的影响,确定了最佳合成条件:m(HPAE-C)∶m〔Al2(SO4)3〕=2∶1,反应温度30℃,pH=3,反应时间3 h。采用IR、XRD对产品分子结构进行表征,并采用热重分析仪测试了产品的热性能,HPC-Al的热分解温度为243℃。将产品应用于皮革鞣制中,其单独鞣革收缩温度为76.6℃,铬复鞣后收缩温度大于95℃,且物理力学性能明显提高。A new chrome-free tanning agent （HPC-Al） was synthesized through the complexation of the terminal carboxyl groups of hyperbranched polymer with the Al3 ＋ in aluminum sulphate. A single-factor experiment was conducted to investigate the effect of reaction conditions on the shrinkage temperature of the finished leather and to ascertain the optimum reaction conditions, which were as follows ：m （HPAE-C） ： m [ Al2 （ SO4 ） 3 ] ~ 2：1, pH = 3, reaction temperature 30 ℃, and reaction time 3 h. The molecular structure of HPC-Al was characterized and analyzed by means of IR and XRD. Thermogravimetric analysis was adopted to test the thermal properties of the product. The thermal decomposition temperature of HPC-Al was 243 ℃. The application results show that the shrinkage temperature of HPC-Al tanning leather was 76.6 ℃. The shrinkage temperature was higher than 95 ℃ after chrome retanning, and it has greatly improved leather fullness, softness and physical-mechanical properties.

关 键 词：端羧基超支化聚合物 铝 无铬鞣剂 皮革化学品 

分 类 号：TQ944[化学工程]