采用广角X射线衍射法研究了以聚苯乙烯(PSt)或聚丙烯酸甲酯(PMA)为主链,聚环氧乙烷(PEO)为支链的接枝共聚物及其金属盐络合物的结晶性能。结果表明,在PEO支链分子量相同,且含量相近的情况下,PMA-g-PEO的结晶度(x_0)比PSt-g-PEO小;在金属盐与EO的络合比及其他条件相同的情况下,不同金属盐降低x_0的能力为LiClO_4>KSCN>FeCl_2;接枝共聚物及其金属盐络合物的x_0均随着PEO支链含量的增加而增加。 The wide-angle X-ray diffraction (XRD) method was used to study the graft copolymers of polyethylene (PSt) or poly (methyl acrylate) (PMA) The crystallization performance. The results show that the crystallinity (x_0) of PMA-g-PEO is smaller than that of PSt-g-PEO when the molecular weights of PEO branches are the same and the content is similar. When the complex ratio of metal salt to EO and other conditions are the same , The ability of different metal salts to reduce x_0 is LiClO_4> KSCN> FeCl_2. The x_0 of the graft copolymer and its metal salt complexes increase with the increase of PEO branch content.