Mandarin:
阳离子聚合 (yáng lí zǐ jù hé)

Explanation in English Language (EN):
Cationic polymerization is a chain-growth polymerization mechanism where a cation (a positively charged species) acts as the active center for chain propagation. The process is typically initiated by cationic initiators, such as strong protic acids or Lewis acids, which generate carbocations by reacting with the monomer. These carbocations then react with more monomer molecules, adding them to the growing chain. Cationic polymerization is commonly used for monomers with electron-donating substituents, which stabilize the positive charge on the carbocation.

Explanation in Mandarin (ZH):
阳离子聚合是一种链式增长聚合机理，其中阳离子（带正电荷的物质）充当链增长的活性中心。该过程通常由阳离子引发剂引发，例如强质子酸或路易斯酸，它们通过与单体反应生成碳正离子。然后这些碳正离子与更多的单体分子反应，将它们添加到不断增长的链中。阳离子聚合通常用于具有给电子取代基的单体，这些取代基可以稳定碳正离子上的正电荷。

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