When the graft ratio was high, the hydrophilic side chain was long and the molecular mass of the main chain of the hydrophilic matrix was great, the diffusion of PP-g-PEG in PP blends would be poor, and the diffusion coefficient would also be small.

• 接枝率越高、亲水性侧链的长度越长，亲基体主链摩尔质量越大，接枝共聚物在聚丙烯共混体系中的迁移扩散性能越差，扩散系数越小。