Morphology control in polystyrene/poly(methyl methacrylate) composite latex particles
Morphology control in polystyrene/poly(methyl methacrylate) composite latex particles
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DOI：
10.1002/pola.21964
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发表时间：
2007-06
期刊：
影响因子：
--
通讯作者：
V. Herrera;R. Pirri;J. Asua;J. R. Leiza
中科院分区：
文献类型：
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作者：
V. Herrera;R. Pirri;J. Asua;J. R. Leiza
研究了不同嵌段共聚物[聚苯乙烯-嵌段-聚甲基丙烯酸甲酯]含量对聚苯乙烯/聚甲基丙烯酸甲酯复合乳胶粒形态的影响。嵌段共聚物通过受控自由基聚合（CRP）原位产生，通过将第二单体添加到通过细乳液聚合与一定量的CRP试剂制备的种子中。随着嵌段共聚物量的增加，颗粒形态从半球形态（对于没有嵌段共聚物的胶乳，即，在聚合过程中不使用CRP试剂），以由于降低聚合物-聚合物界面张力而清除核-壳形态。
The effect of the presence of different amounts of block copolymers [polystyrene-block-poly(methyl methacrylate)] on the morphology of polystyrene/poly (methyl methacrylate) composite latex particles was investigated. The block copolymers were produced in situ by controlled radical polymerization (CRP) through the addition of the second monomer to a seed prepared by miniemulsion polymerization with a certain amount of a CRP agent. With an increase in the amounts of the block copolymers, the particle morphology changed from a hemisphere morphology (for a latex without block copolymers, i.e., without the use of a CRP agent during the polymerization) to clear core-shell morphologies as a result of decreasing polymer-polymer interfacial tension.