Preparation And Conductivity Of PANI And Its' Ramification/Inorganic Compsites

Research and preparation of nanomaterials is causing an extensive concern of all over the world. Recently, the developing direction of materials is the functional complementarity and the property optimization. Nowadays, organic-inorganic nanocomposites have become full-subject crossed leading field across material science, physical chemistry, organic chemistry and polymeric chemistry, because they combine the merits of the organic polymers and inorganic material, exhibiting good electrical, optical, mechanical and magnetic properties.Polyaniline (PANI) is one of the most promising conducting polymers due to its lower cost, higher and tunable conductivity, environmental stability and unique chemical and electrochemical properties. However, the properties of infusibility, insolubility and poor processability have greatly prevented its application. Nanomaterial has the special physical and chemical properties. Introducing nanotechnology into the synthetical technology of polyaniline will remarkably improve its processability; moreover it has conductivity and nanopartical function together. The research contains four parts, as follows:1. In this chapter, we mainly describe the development of the nano structure and of soluble PANI. CNTs have excellent mechanical properties, good chemical and thermal stabilities predominant nano-effects electrical and microwave absorption properties, and have the unique of one dimensional nano-structure which makes CNTs be reinforcen for polymer materials, and give polymer materials many new the perfect functions, we describe the development of the CNTs/polymer composite.2. The graphite nanosheets/polypaniline (NanoGs/PANI) nanorod composites were fabricated via ultrasonic polymerization of aniline monomer in the presence of NanoGs which was used as electric filling. The kind of doped acids, the concentration, and the content of the graphite nanosheets as impact factor to the conductivity of the material was investigated. The structure of nanocomposites was characterized by FT-IR, SEM. The results show that ultrasonic can effectively restrain the agglomerate of the aniline and come to uniformity nanorods composite. The conductivity reached to 4.8S/cm and 22S/cm respectively.3. The NanoGs/PANI-PEG-PANI composites were fabricated via polymerization of aniline monomer and BAPPEG in the presence of NanoGs which was used as electric filling. The kind of doped acids, the concentration, and the content of the graphite nanosheets as impact factors to the conductivity of the material was investigated. The structure of composites was characterized by FT-IR, SEM. The results showed the materials with even film structure have excellent conductivity. The conductivity reached to 3.4 S/cm and 16.9 S/cm respectively.4. The CNTs/PANI-PEG-PANI composites were fabricated via ultrasonic polymerization of PANI-PEG-PANI in the presence of CNTs which was used as electric filling. The structure of nanocomposites was characterized by FT-IR, AFM. The conductivity of pure PANI-PEG-PANI is 3.4S/cm, the conductivity of composite cut down to minimum when the CNTs is 1.2%, but after the piont the conductivity are increase.