铝、硅、磷鞣剂鞣制皮粉湿热变性前后的固体核磁分析  

Solid State NMR Spectroscopy Analysis for Hide Powder Tanned by Aluminum,Silicium and Phosphorus Tanning Agents before and after Hydrothermal Denaturation

作　　者：何达海 刘军[2] 陈华林 丁克毅[2,3] HE Dahai;LIU Jun;CHEN Hualin;DING Keyi(College of Pharmacy,Southwest Minzu University,Chengdu 610041,China;College of Chemistry&Environment,Southwest Minzu University,Chengdu 610041,China;College of Life Science,Dalian Minzu University,Dalian 116600,China)

机构地区：[1]西南民族大学药学院,四川成都610041 [2]西南民族大学化学与环境学院,四川成都610041 [3]大连民族大学生命科学学院,辽宁大连116600

出　　处：《皮革科学与工程》2021年第4期6-10,16,共6页Leather Science and Engineering

基　　金：国家自然科学基金(21776231)。

摘　　要：为了对鞣制胶原湿热变性后鞣剂与胶原分子之间形成的化学键的变化有比较直观的了解,制备了铝、硅、磷鞣剂鞣制的皮粉。采用固态27Al NMR、29Si NMR、31P NMR方法,分别分析了铝、硅、磷鞣剂鞣制的皮粉湿热变性前后Al、Si、P元素的化学位移。结果表明:通过配位键与胶原分子发生作用的铝鞣皮粉,湿热变性后Al的化学位移基本没有变化(略微向高场移动);通过氢键与胶原分子发生作用的硅鞣皮粉,湿热变性后Si的化学位移没有变化;通过共价键与胶原分子发生作用的磷鞣皮粉,湿热变性后P的化学位移明显向高场移动。In order to directly investigate the change of chemical bond between tanning agents and collagen molecule,hide powder tanned by aluminum,silicon and phosphorus tanning agents were prepared.The chemical shifts of Al,Si and P in hide powder tanned with Al,Si and P tanning agents were analyzed by solid-state 27Al NMR,29Si NMR and 31P NMR,respectively.The results showed that the chemical shift of Al in the aluminum tanned hide powder,in which collagen molecules were crosslinked through coordination bond,could be regarded as unchanged after hydrothermal denaturation(only slightly shift to high field area).The chemical shift of Si in the silicon tanned hide powder,in which collagen molecules were crosslinked through hydrogen bond,did not change after hydrothermal denaturation.The chemical shift of P in the phosphorus tanned hide powder,in which collagen molecules were crosslinked through covalent bond,changed a lot after hydrothermal denaturation,and its chemical shift was obviously shifted to the high field area.

关 键 词：铝鞣 硅鞣 磷鞣 湿热变性 固体核磁 

分 类 号：TS513[轻工技术与工程—皮革化学与工程]