聚吡咯/海藻酸钙导电微球的制备与表征

用乳液法成功制备出形貌规则的海藻酸钙微球,以该微球为"模板",合成出电导率为3.82S/cm的聚吡咯/海藻酸钙微球,探讨了其形成机理。用扫描电镜(SEM)对海藻酸钙微球及聚吡咯/海藻酸钙微球形貌进行了表征,发现搅拌速度为2200r/min时,海藻酸钙微球形貌最好,直径约为7μm,聚吡咯/海藻酸钙微球直径约为10μm。用傅立叶变换红外光谱(FTIR)和X射线衍射光谱(XRD)对产物的结构进行了表征,结果表明,海藻酸钙微球已经成功掺杂到聚吡咯中;聚吡咯/海藻酸钙微球的XRD衍射峰强度明显高于纯聚吡咯的衍射峰强度。

Synthesis and Characterization of Polypyrrole/Calcium Alginate Conductive Microspheres

Calcium alginate microspheres with ideal micro-morphology were obtained by an emulsification technique,and polypyrrole(PPy)/calcium alginate microspheres with a conductivity of 3.82 S/cm were synthesized successfully.The mechanism of conductive microspheres was discussed.The morphology of calcium alginate and polypyrrole/calcium alginate microspheres were observed by SEM.It was found that,when the stirring rate was 2 200 r/min,the calcium alginate microspheres had good morphology with diameter about 7 μm,and the diameter of PPy/calcium alginate microspheres were about 10 μm.The molecular structures of PPy/calcium alginate microspheres were characterized by FTIR and XRD.The results show that PPy is doped by calcium alginate microspheres and the diffraction peak intensity of PPy/calcium alginate microspheres is higher than that of pure PPy.