Benzoyl Peroxide/2‐Vinylpyridine Synergy in RAFT Polymerization: Synthesis of Poly(2‐vinylpyridine) with Low Dispersity at Ambient Temperature
Benzoyl Peroxide/2‐Vinylpyridine Synergy in RAFT Polymerization: Synthesis of Poly(2‐vinylpyridine) with Low Dispersity at Ambient Temperature
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DOI：
10.1002/macp.201500156
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发表时间：
2015-08
影响因子：
2.5
通讯作者：
Juxiang Luo;Mingchun Li;M. Xin;Weifu Sun
中科院分区：
文献类型：
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作者：
Juxiang Luo;Mingchun Li;M. Xin;Weifu Sun
在室温下，在没有常规还原剂的情况下，氧化还原引发的2-乙烯基吡啶的可逆加成断裂链转移聚合已经在仅氧化剂存在下实现，即，过氧化苯甲酰。在25 °C下反应24 h后，聚2-乙烯基吡啶的转化率为41.4%，分散度为Mw/Mn = 1.11。研究了2-乙烯基吡啶的聚合动力学、数均分子量和分散性。结果表明，聚2-乙烯基吡啶的数均分子量随单体转化率的增加而增加，但分散性较低（Mw/Mn < 1.20）。
Redox-initiated reversible addition fragmentation chain transfer polymerization of 2-vinylpyridine at room temperature without a conventional reducing agent has been realized in the presence of an oxidizing agent only, i.e., benzoyl peroxide. Well-defi ned poly(2-vinylpyridine) is obtained with a low dispersity (dispersity = M w / M n = 1.11) and a conversion effi ciency of 41.4% after 24 h at 25 °C. The kinetics, number-average molecular weight, and dispersities for the polymerization of 2-vinylpyridine are investigated. The results indicate that the number-average molecular weight of the poly(2-vinylpyridine) increases with the monomer conversion while retaining relatively low dispersity ( M w / M n < 1.20).