AFM studies on UV-initiated grafting of glycidyl methacrylate onto high-density polyethylene surface

作者：Wang Hui Liang^*

来源：Chemical Journal of Chinese Universities, 2006, 27(8): 1570-1574.

• atomic force microscopy(AFM)
• UV initiated grafting
• microstructure
• initiation

The microstructure of grafted polymer chains has a significant effect on the final properties of the grafted polymer, however, there is still not a direct method to characterize the microstructure of grafted chains. The microstructure of the grafted chains formed in the initial stage of the UV-initiated photograffing of glycidyl methacrylate (GMA) onto high-density polyethylene( HDPE) surface and the initiation rate of the surface photograffing reaction were studied with tapping mode atomic force microscopy (AFM). The grafted materials with granular structures were found on HDPE surface after 30 s UV irradiation, after that, the number and the volume of the granules increased with the increase of irradiation time. The granule was thought to be a single grafted chain with a highly branched (or superbranched) microstructure. The grafting density on HDPE increased almost linearly with the increase of irradiation time in the range of 30-45 s, and the increasing rate of grafting density became slower after 45 s. The initiation rate of surface photografting was about 6.5 Unit/ mu m(2.)s) in the range of 30-45 s.

• 出版日期2006-8-10
• 单位北京师范大学