摘要
通过合理选择二氧化锰加入苯胺/过硫酸铵/酸水反应体系的时间,制备了各种含量的聚苯胺/二氧化锰复合材料(PANI/MnO2)。用FTIR、UV-VIS、XRD和SEM对原位制备的PANI/MnO2进行了表征。XRD证明了原位合成的复合材料中聚苯胺组分为无定型,MnO2的晶型在反应前后未发生变化。SEM证明了反应中形成的聚苯胺倾向于在MnO2颗粒表面沉积,得到一种包裹型的PANI/MnO2复合材料。用苯胺的盐酸溶液在静止状态下处理复合材料,可得到一种树状珊瑚形貌的聚苯胺,这种形貌的聚苯胺不同于酸水体系中常见的颗粒状聚苯胺。
The polyaniline/manganese dioxide composites (PANI/MnO2) containing different amounts of manganese dioxide were prepared by chemical polymerization of aniline using ammonium persulfate (APS) and MnO2 as the oxidizing agent. The inclusion of PANI in the composite was confirmed by FTIR, UV-VIS, XRD and SEM analysis. It shows that PANI in the composite is amorphous and the crystal structure of MnO2 is unchanged compared with the initial MnO2. The PANI formed in the reaction is deposited preferentially on the MnO2 particles giving a PANI/MnO2 composite, in which the MnO2 is coated with the PANI. The tree-coral-shaped PANI, which differed from the common grain-like PANI in the acid/water reaction system, was obtained by treating the PANI/MnO2 composite in the static state with hydrochloride acid solution of aniline.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2004年第4期1-7,共7页
Acta Materiae Compositae Sinica
基金
上海市科委纳米技术专项基金项目(0352nm061)
关键词
聚苯胺
二氧化锰
复合材料
原位聚合
形貌
导电高分子
Conductive materials
Crystal structure
Deposition
Fourier transform infrared spectroscopy
Morphology
Nonmetallic matrix composites
Scanning electron microscopy
X ray diffraction analysis
