摘要
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。
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 SEM. It was found that,when the stirring rate was 2 200 r/min,the calcium alginate were observed by microspheres had good morphology with diameter about 7 p,m, and the diameter of PPy/calcium alginate microspheres were about 10 ~m. The molecular structures of PPy/calcium alginate microspheres were characterized by FI＇IR and XRD. The results show that PPy is doped by calcium alginate microspheres and diffraction peak intensity of PPy/calcium alginate microspheres is higher than that of pure PPy.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2008年第12期1175-1178,共4页
Fine Chemicals
基金
河北省自然科学基金资助项目(E2007000066)~~
关键词
聚吡咯
海藻酸钙微球
乳液法
功能材料
polypyrrole
calcium alginate microspheres
emulsification technique
functional materials
