ps-grafted
1.The PS-grafted magnetite nanoparticles are uniform with diameters in the range from 20 nm to 30 nm from TEM.
2.Otherwise, Ethylene Diamine and Epichlorohydrin was grafted onto the polymer in order to improve the hydrophilicity. The product Phe resin with long chain (PS-Ace-EDA-ECH-Phe) was excepted to react with biochemical molecules easily.

