【作者】 苗青； 金勇； 张彪； 曹志峰； 马春彦；

【Author】 Miao Qing,Jin Yong,Zhang Biao,Cao Zhi-feng,Ma Chunyan(1.Chengdu Institute of Organic Chemistry,Chinese Academy of Science,Chengdu 610041,China;2.Graduate School of the Chinese Academy of Science,Beijing 100039,China)

【机构】 中科院成都有机化学研究所； 中国科学院研究生院；

【摘要】 丙烯酸树脂(PAA)和聚氨酯(PU)为皮革工业中常用的高分子类复鞣剂。本文合成了三种具有不同疏水链比例的非离子性双亲嵌段型聚氨酯(PUn),考察在特定pH值通过调节PAA与PUn不同质量配比对两者相互作用的影响,以期为制备一类可用于无铬鞣工艺操作的新型复鞣剂提供理论依据。研究结果表明:当两者以[AA]:[EO]=1:1配比时,产生的沉淀量最大。更多还原

【Abstract】 Poly(acrylic acid)(PAA) and polyurethane(PU) are common synthesized macromolecular retanning agents in leather industry.Three kinds of non-ionic amphiphilic block polyurethane copolymers(PUn) with different ratio of hydrophobic segment were synthesized,and then the ratio effect of [AA]: [EO] on the interaction between PAA and PUn in aqueous solution were studied.The results show that the amount of precipitate of PU34/PAA compound could be maximum when [AA]:[EO]=1:1.更多还原