金属Co/聚丙烯酰胺复合粉体的γ射线辐照制备

Co/Polyacrylamide Composite Powder Prepared by γ Ray Radiation

从Ｃｏ２＋丙烯酰胺有机单体混合水溶液体系出发，采用γ射线辐照合成制备金属Ｃｏ粒子均匀分散在聚丙烯酰胺基质中的Ｃｏ／聚丙烯酰胺复合粒子和相应粉体，其中金属Ｃｏ粒子平均粒径小于１５ｎｍ。并着重讨论辐照过程中丙烯酰胺单体的聚合对金属Ｃｏ粒子生长形貌和粒径的影响。

The Co/polyacrylamide composite particles and their powders have been successfully prepared in mixed aqueous solution of Co 2+ acrylamide monomer using γ ray radiation. Metallic Coparticles, whose average size is less than 15 nm, are homogeneously dispersed into the matrix of polyacrylamide in the product. The effect of polymerization of acrylamide monomer in the process of γ ray irradiation on the morphology and average size of Coparticles are emphatically discussed