Mechanistic transformation approach has been widely applied in polymer synthesis due to its unique feature combining structurally different polymers prepared by different polymerization mechanisms. Reported methods for the formation of block and graft copolymers through mechanistic transformation involve almost all polymerizations modes. However, certain polymerization processes require extensive purification processes, which can be time-consuming and problematic. Recent developments on controlled/living polymerizations involving radical and cationic mechanisms with the ability to control molecular weight and functionality led to new pathways for mechanistic transformations. In this mini-review, we systematically discussed relevant advances in the field through three main titles namely (i) from radical to cationic mechanism, (ii) from cationic to radical mechanism, and (iii) application of specific catalyst systems for both radical and cationic polymerizations.

中文翻译：

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涉及自由基和阳离子聚合的机械转变

机械转化方法因其独特的特征结合了通过不同聚合机理制备的结构不同的聚合物而被广泛应用于聚合物合成中。据报道，通过机械转化形成嵌段和接枝共聚物的方法几乎涉及所有聚合模式。然而，某些聚合过程需要大量的纯化过程，这可能是耗时且有问题的。涉及自由基和阳离子机制并具有控制分子量和官能度能力的受控/活性聚合的最新进展为机械转化提供了新途径。在这份小型审查中，我们通过三个主要标题系统地讨论了该领域的相关进展，即（i）从自由基机理到阳离子机理，