Therefore, the effect of grafting on the solution viscosity is not always the same as branching, because of the nature of the backbone and that of the graft being different, and hence the solvent effect on them is also different.

• 这说明由于主链和枝链化学性?的不同,溶剂对它们的作用不一样,接枝对溶液粘度的影响不能和普通的枝化高分子等 量齐观。