基于鞣制废革屑的生物基皮革填料的制备及性能  

Preparation and properties of bio-based leather filler based on waste tanned leather shavings

作　　者：丁伟 陈国栋 刘海腾 郝雪薇 庞晓燕 丁志文 DING Wei;CHEN Guodong;LIU Haiteng;HAO Xuewei;PANG Xiaoyan;DING Zhiwen(China Leather and Footwear Research Institute Co.,Lid.,Beijing 100015,China;Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry,Beijing Technology and Business University,Beijing 10004&China)

机构地区：[1]中国皮革制鞋研究院有限公司,北京100015 [2]中国轻工业清洁生产和资源综合利用重点实验室北京工商大学,北京100048

出　　处：《精细化工》2022年第1期171-177,共7页Fine Chemicals

基　　金：国家重点研发计划“战略性科技创新合作”重点专项(2020YFE0203800);中国轻工业清洁生产和资源综合利用重点实验室开放课题基金(CP-2020-YB2)。

摘　　要：采用双氧水对非铬金属鞣制废革屑进行了催化氧化,制得降解产物(DCH),然后采用双醛海藻酸钠(DSA)对DCH进行改性,获得生物基皮革填料(BDH)。采用FTIR、GPC、XPS和Zeta电位分析仪对DCH和BDH的结构和性质进行了表征。结果表明,DSA对DCH成功进行了改性,BDH的重均相对分子质量可由DCH的3900提升至5570,同时其等电点由5.2调控至3.3。填充实验表明,相较于未添加蛋白填料的革坯,DCH和BDH填充革坯的各项性能明显更优,特别是抗张强度和丰满性;与DCH填充革坯相比,BDH填充革坯的抗张强度由11.5 N/mm^(2)提升至22.9 N/mm^(2),撕裂强度由58.1 N/mm提升至80.9 N/mm,柔软度由7.2 mm提升至7.9 mm,丰满性也得到提升,整体性能优于常用商品蛋白填料。Non-chrome metal tanned waste leather shavings were catalytically oxidized by hydrogen peroxide to prepare degraded collagen hydrolysate(DCH).Subsequently,the DCH was modified by dialdehyde sodium alginate(DSA)to obtain bio-based protein filler(BDH).The structure and properties of DCH and BDH were characterized by FTIR,GPC,XPS and Zeta potentiometric analyzer.The results showed that DSA successfully modified DCH,and the weight-average relative molecular mass of BDH was increased from 3900 of DCH to 5570 as well as the isoelectric point was changed from 5.2 to 3.3.The properties of DCH and BDH filled crust leathers were significantly better than that of the crust leather without filling by protein filler,especially the tensile strength and fullness.Compared with those of the DCH filled crust leather,the tensile strength of BDH filled crust leather increased from 11.5 N/mm^(2) to22.9 N/mm^(2),the tear strength increased from 58.1 N/mm to 80.9 N/mm and the softness increased from7.2 mm to 7.9 mm.Besides,the fullness of BDH filled crust leather was further improved.Overall,the above-mentioned properties were better than those of crust leather filled using common commercial protein filler.

关 键 词：生物基填料 鞣制废革屑 双氧水降解 物理性能 皮革化学品 

分 类 号：TS544[轻工技术与工程—皮革化学与工程] TS59