Reversible-deactivation radical polymerizations (RDRP) of acrylamide (AM) was carried out via dispersion polymerization mediated by cobalt complexes in alcohol/water and initiated by azobisisobutyronitrile (AIBN) at 65 °C. Well-defined polyacrylamide (PAM) uniform spherical particles with predetermined molecular weight and relatively narrow dispersity (Đ = 1.24–1.53) were obtained under mild thermal conditions based on one polymer chain per cobalt complex demonstrate the living characters of the polymerization process. The living character was demonstrated by the linear fit with different feeding ratios of AM and cobalt complex, as well as a linear increase in the number- average molecular weight observed with the monomer conversion. It is worth pointing out that the high conversion of AM (>90%) was obtained with formation of well-controlled PAM, relative to the cobalt porphyrin (The conversion of AM reached 40%) in dispersion polymerization condition. The effects of the volume ratio of alcohol and water on the morphology of the spherical particles were investigated. There were increasing trends in the particle size with the increasing volume ratio of alcohol and water. Solution polymerization of acrylamide was also studied in the same condition. Linear fit with different feeding ratios of AM and cobalt complex were obtained.

丙烯酰胺（AM）的可逆失活自由基聚合（RDRP）是通过在65°C下由钴配合物在乙醇/水中介导并由偶氮二异丁腈（AIBN）引发的分散聚合进行的。在温和的热条件下，基于每个钴配合物一条聚合物链，可以得到具有预定分子量和相对较窄分散度（Đ= 1.24–1.53）的良好定义的聚丙烯酰胺（PAM）均匀球形颗粒，表明聚合过程的活性。通过AM和钴配合物的不同进料比的线性拟合以及随着单体转化率观察到的数均分子量线性增加来证明其活泼性。值得指出的是AM（> 在分散聚合条件下，相对于钴卟啉（AM的转化率达到40％），获得了90％的PAM（形成良好控制的PAM）。研究了醇和水的体积比对球形颗粒形貌的影响。随着酒精和水的体积比增加，粒径也有增加的趋势。在相同条件下也研究了丙烯酰胺的溶液聚合。获得了AM和钴配合物不同进料比的线性拟合。随着酒精和水的体积比增加，粒径也有增加的趋势。在相同条件下也研究了丙烯酰胺的溶液聚合。获得了AM和钴配合物不同进料比的线性拟合。随着酒精和水的体积比增加，粒径也有增加的趋势。在相同条件下也研究了丙烯酰胺的溶液聚合。获得了AM和钴配合物不同进料比的线性拟合。