在某一极性介质中，游离的分散剂分子通过非极性尾链间的吸附作用被拉向那些已经吸附在颜料表面的分子。
In certain polar media, free molecules are drawn to those already attached to the pigment surface through apolar-apolar interaction of the tails.
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。
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.
在PP大分子链上接枝含极性基团的乙烯基单体，可显著提高PP的阻燃性能；
The introduction of the vinyl monomer containing polar group into PP macromolecular chain could improve the flame retardance of PP obviously.
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