铈离子引发N-对甲苯基丙烯酰胺类聚合物膜上丙烯酰胺接枝共聚合的研究

合成了NTAAM,NTMAAM,NPMAAM功能单体,发现这类功能单体与铈离子组成的体系能引发丙烯酰胺聚合,带有这类功能单体的聚合物和共聚物铸成的膜,能用铈离子引发丙烯酰胺接枝共聚合。这可从反应后的膜比基膜有较大的吸水率、与水有较小的接触角,也可从扫描电子显微镜观察到表面上有凸起图象的高分子链,以及从膜表面的X射线光电子能谱所证实。同时研究了共聚物膜的组成、反应条件对接枝共聚合的影响。

GRAFT COPOLYMERIZATION OF ACRYLAMIDE ONTO POLY (N-PARA-TOLYLACRYLAMIDES) FILMS INITIATED BY CERIC ION

Functional monomers such as NTAAM, NDMAAM, NPMAAM were synthesized. Binary initiation systems consisted of eerie ammonium nitrate (CAN) and these functional monomers could initiate acrylamide (AAM) polymerization. It was found that AAM could graft copoly-merize onto macromolecules having paratolylcarbamoyl and phenylcarbamoyl pendant groups, such as PNTAAM, PNTMAAM, PNPMAAM and copolymers 1-6. The formation of graft copolymer has been verified by its water absorption %, contact angle with water, the X-ray pho-toelectron spectrometry and the scanning electron microscopy photographs. The reaction mechanism was proposed and the main reactive site of graft copolymerization initiated by eerie- ion would take place predominantly at the functional pendant group.