Development of a new grafting system for making metal adsorbent

Seko, Noriaki; Ueki, Yuji; Thi Yen Ninh, N.*; Bang, L. T.*; Tamada, Masao

Proceedings of 12th International Conference on Radiation Curing in Asia (RadTech Asia 2011) (Internet), p.140 - 141, 2011/06

Syntheses of amine-type adsorbents with emulsion graft polymerization of glycidyl methacrylate

Seko, Noriaki; Bang, L. T.*; Tamada, Masao

Nuclear Instruments and Methods in Physics Research B, 265(1), p.146 - 149, 2007/12

https://doi.org/10.1016/j.nimb.2007.08.041

Radiation-induced graft polymerization is attractive technique for preparing metal-ion adsorbents. The reactive monomer of glycidyl methacrylate (GMA) has been widely used for the syntheses of metal-ion adsorbents. This is because the GMA contains an epoxy group which can react easily with amine derivatives. Therefore, GMA-grafted polymer can be converted to various kinds of metal-ions adsorbents. Generally, GMA can be grafted by using organic solvent such as methanol and dimethyl sulfoxide. We found that the emulsion of GMA was available for effective grafting. The GMA was grafted onto polyethylene fiber (PE fiber) in the emulsion system. Polyoxyethylene sorbitan monolaurate (Tween 20) was used as a surfactant to prepare the micelles of GMA in water. The degree of grafting reached 300% after the 1h grafting on 30 kGy irradiated PE fiber in the GMA emulsion obtained by mixture of 5% GMA, 0.5% Tween 20, and 94.5% water. Then, the GMA grafted PE fiber was chemically modified by using diethylene-triamine and triethylenetetramine and the amine-type adsorbents were obtained.