摘要
以丙烯酸(AA)、可聚合非离子型聚氨酯大单体(PU)及巴豆醛(CA)为原料,采用氧化还原引发体系(K2S2O8-NaHSO3)在水溶液中合成了一系列含非离子型聚氨酯支链的醛酸高分子鞣剂——丙烯酸-聚氨酯-巴豆醛共聚物(P(AA-PU-CA)),并通过傅里叶红外变换光谱和差式量热扫描对其结构进行了表征;考察了P(AA-PU-CA)组成与其耐酸性能的关系,探讨了P(AA-PU-CA)的鞣制机理。结果表明:当P(AA-PU-CA)共聚物的单体配比组成为AA∶PU∶CA=5∶1∶4,提碱pH=4.8～5.2,加入量为裸皮质量的5%时,(P(AA-PU-CA))共聚物可将裸皮的热收缩温度提高11℃。
The acrylic acid - polyurethane - crotonaldehyde copolymer （ P （ AA - PU - CA ） ） was synthesized from acrylic acid, polymerizable nonionic polyurethane and crotonaldehyde in water, with K2 S2 O8 - NaHSO3 as the initiator. And its structure was characterized by FTIR and DSC. The tanning mechanism and the relation between the polymer＇ s structure and its acid resistance property were studied. The results show that the thermal shrinkage temperature of leather can be risen 11 ℃ tanned by 5% P （ AA - PU - CA） with AA： PU： CA = 5 ： 1 ： 4, pH = 4.8 - 5.2.
出处
《中国皮革》
CAS
北大核心
2011年第23期21-27,共7页
China Leather
基金
国家自然科学基金资助项目(编号20874102)
关键词
醛酸高分子鞣剂
合成
鞣制机理
aldehyde - acid polymer tanning agent
synthesis
tanning mechanism
