Bai Meng-Yi, Xia Younan
Department of Biomedical Engineering, Washington University, Saint Louis, Missouri 63130, USA.
Macromol Rapid Commun. 2010 Nov 1;31(21):1863-8. doi: 10.1002/marc.201000385. Epub 2010 Sep 20.
Polystyrene (PS) hollow spheres containing a hole on the surface were used as templates to fabricate double-shelled polypyrrole (PPy) hollow particles with a unique structure similar to that of a thermal bottle. Thanks to the hole on the surface, the monomer and initiator could easily and quickly diffuse into the interior of the PS hollow sphere to generate uniform PPy coatings on both the inner and outer surfaces of the hollow template. When the PS template was selectively removed with tetrahydrofuran, we obtained a double-shelled hollow particle with a structure resembling that of a thermal bottle. We also demonstrated that the morphology and porosity of the resultant PPy coatings could be manipulated and fine-tuned by adjusting at least three parameters: the concentration of monomer, the polymerization time, and the addition of poly(vinyl pyrrolidone).
表面带有一个孔的聚苯乙烯（PS）空心球被用作模板，以制备具有类似于保温瓶独特结构的双壳聚吡咯（PPy）空心颗粒。由于表面的孔，单体和引发剂能够轻松快速地扩散到PS空心球内部，从而在空心模板的内表面和外表面上生成均匀的PPy涂层。当用四氢呋喃选择性地去除PS模板时，我们得到了一种结构类似于保温瓶的双壳空心颗粒。我们还证明，通过调整至少三个参数：单体浓度、聚合时间和聚乙烯吡咯烷酮的添加量，可以控制和微调所得PPy涂层的形态和孔隙率。
