The experimental results show that polar groups (mainly carbonyl group) are introduced into the molecular chains of HDPE during electron beam irradiation, the polarity of HDPE is thus increased.

• 结果表明,通过电子束辐照可在HDPE分子链上引入含氧极性基团,使HDPE的表面自由能增大,极性增强,与水的接触角减小。