用悬浮聚合法制备多孔和中空微球,悬浮体系的配方中包含单体、惰性溶剂、引发剂、交联剂和分散剂聚乙烯醇等.随着聚合的进行,聚合物分子量的增大,产生了相分离,得到多孔或中空结构;同时也讨论了交联剂和亲水性单体对聚合物微球形态的影响.用光学显微镜观察聚合物微球的形态并测量微球的尺寸.结果表明,多孔微球的粒径约为30μm,小孔的尺寸约为3μm;中空微球的粒径约为20μm,表面光滑并且有形状不规则的洞.
参考文献
| [1] | Yuan CD;Mao AH;Cao JW;Xu YS;Cao TY .Preparation of monodispersed hollow polymer particles by seeded emulsion polymerization under low emulsifier conditions[J].Journal of Applied Polymer Science,2005(4):1505-1510. |
| [2] | Yolanda Vasquez;Amandeep K. Sra;Raymond E. Schaak .One-Pot Synthesis of Hollow Superparamagnetic CoPt Nanospheres[J].Journal of the American Chemical Society,2005(36):12504-12505. |
| [3] | Zhong ZY.;Gates B.;Xia YN.;Yin YD. .Preparation of mesoscale hollow spheres of TiO2 and SnO2 by templating against crystalline arrays of polystyrene beads[J].Advanced Materials,2000(3):206-209. |
| [4] | Zhenzhong Yang;Zhongwei Niu;Zhibing Hu;Charles C.Han;Yunfeng Lu;Zhibing Hu .Templated Synthesis of Inorganic Hollow Spheres with a Tunable Cavity Size onto Core-Shell Gel Particles[J].Angewandte Chemie International Edition,2003(17):1943-1945. |
| [5] | Schmidt W;Roessling G .Novel manufacturing process of hollow polymer microspheres[J].Chemical Engineering Science,2006(15):4973-4981. |
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