Surface-charge-mosaic-modified ultrafiltration membranes with charged domains of various sizes (500, 100, or 50 mm) were prepared by two-step laser-induced surface graft polymerization using a striped photomask. First, the surface of an ultrafiltration membrane was treated with 4-vinylpyridine after
Laser-irradiation-induced surface graft polymerization method
β Scribed by Noboru Saito; Shuzo Yamashita; Takehisa Matsuda
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 112 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0887-624X
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β¦ Synopsis
A laser-induced surface graft polymerization method is reported in which surface radicals generated upon laser irradiation initiated radical polymerization. The radical concentrations generated upon excimer laser irradiation under vacuum on poly-(ethylene terephthalate) film surfaces were measured using a radical scavenger, 1,1diphenyl-2-picrylhydrazyl. The density of surface radicals increased with laser fluence at low fluences but decreased at high fluences. Upon laser irradiation and subsequent treatment with gaseous N,N-dimethylacrylamide, surface graft polymerization occurred.
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