利用CoII(acac)2進行鈷催化自由基聚合反應(CMRP)以合成出聚醋酸乙烯酯(PVAc)，並利用PVAc- CoIII(acac)2作為原子轉移自由基聚合反應(ATRP)的巨起始劑來進行甲基丙烯酸甲酯(Methyl methacrylate)和苯乙烯(Styrene)的聚合反應，可以成功合成出PVAc-b-PMMA與PVAc-b-PSt嵌段共聚物。
此合成方式藉由CMRP與ATRP的結合可以更直接地進行不同機制的可控自由基聚合反應，不需要利用一些特殊的化合物或是額外的合成步驟。
在結合CMRP與ATRP機制合成PVAc-b-PMMA時，在ATRP聚合反應中發現使用不同活性配位基聚合MMA單體，配位基效應呈現反轉結果，故在CMRP與ATRP結合的聚合反應動力學速率進行更深入的探討。
銅線加入於ATRP系統中，可以加速聚合反應速率與增加聚合反應的耐氧性，但也會影響ATRP中銅一價金屬錯合物與銅二價錯合物的平衡，故也影響到配位基的效應。若將銅線在聚合反應中去除，聚合反應速率與配位基效應則會與文獻相符。

We successfully used the method of cobalt-mediated radical polymerization (CMRP) to prepare the well-defined poly(vinyl acetate) (PVAc) as the macro-initiator used in the reverse atom transfer radical polymerization (ATRP) of styrene (Sty) and methyl methacrylate (MMA) to synthesize the block copolymers of PVAc-b-PMMA and PVAc-b-PSty. The chain extension from PVAc to PMMA or PSty via the hybridization of CMRP and ATRP required neither a difunctional initiator nor further chain-end modification.
But we found out a special phenomenon in the kinetic plot of using ATRP to polymerize MMA with three different active ligands. The results showed that the ligand effect was reversed. So we did a more in-depth discussion on that.
In the ATRP polymerization, we added the copper wire as reducing agent to speed up the rate of polymerization and positively affect the equilibrium of Cu(I) and Cu(II) species and thus enhance the control efficiency of ATRP. Later, we demonstrated that the copper wire in the reverse ATRP would interfere the equilibrium of ATRP and weaken the ligand effect on the polymerization. Without adding the copper wire in the homogeneous reverse ATRP system could be succeed and showed the ligand effect on them.

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