乙醇溶剂中水对甲基丙烯酸甲酯的ARGET ATRP聚合反应的影响

The Influences of Water in the Ethanol Solvent to the ARGET ATRP of Methyl Methacrylate

原子转移自由基活性聚合(ATRP)是一种有效的活性可控聚合方法,可进行摩尔质量设计,制备结构和摩尔质量分布可控的各类聚合物,具有潜在而广泛的研究价值。传统的ATRP聚合反应常用的溶剂如甲苯等,由于其具有较大的毒性,限制了其产业化的进程。以无毒环保的乙醇为溶剂,甲基丙烯酸甲酯(MMA)为单体,研究一定量水的加入对电子转移活化再生催化剂原子转移自由基聚合(ARGET ATRP)的影响。结果表明,在MMA的ARGET ATRP反应中,水的加入能够有效促进聚合反应,随着水含量(相对于乙醇质量分数)的增加,聚合速率增加,水含量为10%以下时,得到较快的聚合速率同时聚合可控,超过10%,虽然聚合速率增加,但聚合反应可控性降低。

Atom transfer radical polymerization （ ATRP ） is an effective, controlled radicalpolymerization technique utilized to synthesize a number of polymers with controlled molecular weight,architectures and distribution of molecular weight. Because of the solvents commonly used in the traditionalATRP such as toluene with high toxicity, the advance of the industrialization of ATRP is blocked. We usedethanol as the solvent, MMA as the monomer to research the influences of some water added to the reactant inthe ARGET ATRP. It is found that adding a certain amount of water can promote the reaction rate. With theincrease of the water content （ realative to the mass fraction of ethanol ）, the rate of polymerization waspromoted. When the water content is below 10% , the reaction rate is fast and the reaction is controlled.When the water content is over 10%, the reaction rate increases but the reaction loses controlled.