Study On The Preparation Of PANI/PMMA By Institu Emulsion Polymerlization

PANI (polyaniline) is attracting attention of scientists as the conductive material. PANI has broad application foreground for its raw material is easy to get, its simple synthesis methods, good stability to oxygen and H₂O, good capability of antisepsis, unique conductibility and so on.In this paper the solubility doped polyaniline and the composite of PANI/Poly(methyl methacrylate) (PMMA) were synthesised, and a series of experiments and researches were done to improve the performance of PANI.In the study of doped PANI, the paper used solution and emulsion polymerization to synthesis polyaniline with DBSA (dodecylbenzene-sulfonic acid) doped respectively.The characterizations was used to analysis different doped PANI .FT-IR showed that the vibration peaks of doped PANI moved to the low frequency migration, and the rate of conductivity was enhancement;The X- ray obtained that doped PANI had crystallization. The effects of productivity, conductivity, and solubility through changed the experiment conditions have been discussed ,the emulsion polymerization was better than the solution polymerization.In this paper Polyaniline (PANI) composite were prepared by institu emulsion polymerlization. Microspheres consisting of a PMMA call wrapped by the conductive polyaniline (PANI) particle as a shell . The paper was emphasized on discussing the effects of polymerization by all kinds of experiment factors with the standards of productivity and conductivity;the dosage of reactant and the experiment conditions were decided preliminary. We found that the properties of the composite were good when APS/DBSA/ANI=1.2/1.5/1.In this paper, a series of characterizations were usd to analysis the composite ,The Microspheres was showed by TEM;FT-IR was used to analysis the property the change of structure in the composite of PANI/PMMA;The degree of oxidation and doping was analysed by XPS;DSC and TG were used to studied the Tg and heat stability of the composite PANI/PMMA, the all results showed that the composite of PANI/PMMA would increased the stability of composite and improved its solution capacity than PANI;The relations between the conductivity, dielectric and the change of the conditions were also discussed in the paper.