摘要
用Ｎ异丙基丙烯酰胺（ＮＩＰＡＭ）与Ｎ异丙基甲基丙烯酰胺（ＮＩＰＭＡＭ）单体可合成温度敏感型高分子材料。作为单体的合成方法，首先把浓硫酸与异丙醇混合，而后加入丙烯腈（或甲基丙烯腈），经催化反应后，反应液用乙醚萃取、正己烷重结晶，可得相应的氮取代丙烯酰胺。报告了在常温、常压下，在浓硫酸催化下，丙烯腈与异丙醇的摩尔比为１∶１时，Ｎ异丙基丙烯酰胺与Ｎ异丙基甲基丙烯酰胺的产率为６０％～７０％。分别测定了它们的红外光谱与核磁共振谱，发现与对应样品的标准图谱基本一致。通过改变萃取剂，用乙醚替代一般方法使用的二甲苯，可使萃取物易于从萃取剂中分离出来。乙醚可重复使用，每个操作周期乙醚损失约１０％。
NIPAM and NIPMAM are monomers which can synthesize intelligent polymers,those polymers have the lower critical solution temperature(LCST) phenomenon.The synthesization of those monomers includes several steps,the reaction of isopropanol and acrylonitrile (or meth acrylonitrile) with sulphuric acid as catalyst is used,then the products are extracted by ether and recrystallined by hexane.The IR and NMR spectra of products were determined,and compared with standard spectra.Ether used in extracting process can be reused in order to reduce the harm to people.The products yield is about 60%～70%.
出处
《精细化工》
EI
CAS
CSCD
北大核心
1998年第6期46-48,共3页
Fine Chemicals
关键词
NIPAM
NIPMAM
酸催化
催化
高分析材料
原料
N isopropyl acrylamide(NIPAM),N isopropyl methacrylamide(NIPMAM),acid catalysis synthesis
