【摘要】 以丙烯酸（AA）、甲氧基聚乙二醇丙烯酸酯（MPEGA）为聚合单体,S,S′-双（2-甲基-2-丙酸基）三硫代碳酸酯（BDATC）为链转移剂,偶氮二异丁腈（AIBN）为引发剂,采用可逆加成-断裂链转移（RAFT）活性自由基聚合方法,合成三嵌段聚合物分散剂MPEGA-b-AA-b-MPEGA,通过FT-IR、GPC、粒度分析、旋转黏度、悬浮率和沉降率等方法测定,发现聚合物分散剂P3对TiO₂具有较好的分散性,悬浮率为99.23%。25℃悬浮液沉降6d后,沉降率仅为5%。更多还原

【Abstract】 The high efficiency triblock dispersant MPEGA-b-AA-b-MPEGA was synthesized by the reversible addition-fragmentation chain transfer（RAFT）polymerization used acrylic acid（AA）and polyethylene glycol monomethy ether acrylate（MPEGA）,the hydroquinone as inhibitor,BDATC as RAFT agent.The three block polymer was characterized and analyzed by FT-IR,GPC,grain size,rotational viscosity,suspension rate and settlement rate.The results showed that the suspension percentage of TiO₂ were 99.23%.The clear liquid volume just was 5% when 6 days late at 25℃.更多还原