Synthesis Of Hyperbranched Polyamidoamine And Its Application On Preparation Of Conductive Pet Fabrics

Hyperbranched polymers are novel macromolecules with three-dimensional dentriticarchitecture and unique chemical and physical properties, such as high solubility, lowviscosity, many functional groups on the molecules surface, and so on. Because of theirunusual structure, specific properties, and potential applications, Hyperbranched polymershave attracted the increasing attention over the last two decades. Hyperbranchedpolyamidomine （HBP-NH₂） is one kind of hyperbranched polymers. Due to its uniquechemical and physical properties, HBP-NH₂have widely prospect of applications, such asin nanometer devices, liquid crystal materials, molecular self-assembly, coating, and so on.But there still have many problems to be solved in the fields of hyperbranched polymer,such as the perfection of basic theories, discovery of unknown properties, the developmentof application range, and so on. Based on the previous relevant work of HBP-NH₂,synthesis of HBP-NH₂and exploration of its applications on functional textiles have beenresearched in this paper.HBP-NH₂is synthesized from methyl acrylate （MA） and ethylenediamine （DTA） viathe couple-monomer methodology （CMM）. Firstly, the synthesis process of HBP-NH₂under different temperatures is tracked by using the test apparatus and methods of infraredspectroscopy, ultraviolet-visible spectroscopy, measurement of methanol output andUbbelohde viscometer. And then, the structure and properties of synthetic products arecharacterized through methods of infrared spectroscopy, nuclear magnetic resonancespectroscopy, thermal gravimetric analysis, UV-vis spectroscopy, and so on. The resultsshow that HBP-NH₂was synthesized successfully; the thermal decomposition temperatureof products were about275℃，which meets the requirement of application on textile. The coordination mechanism between HBP-NH₂and silver ion （Ag⁺） is studied byusing spectrophotometric method. The effect of time, temperature, pH value and mass ratioon coordinaton between HBP-NH₂and Ag⁺are studied, too. The experimental results showthat the absorption peak of HBP-NH₂/Ag⁺in visible part is caused byd d*transition;complex between HBP-NH₂and Ag⁺is a slow process, the effect of temperature and pHvalue on the coordination are significantly; and the maximum adsorption capacity of silvernitrate to HBP-NH₂synthesized in different temperature are measured, too.Based on the basic research of coordination between HBP-NH+2and Ag, thecomplexation solution of HBP-NH₂/Ag⁺was prepared and used as activation solution inthe preparation progress of conductive PET fabric. When complexation solution waspadded on the PET fabric, electroless copper plating reaction can be happened on fabricsurface successfully. This method eliminates the roughening and sensitization procedures;and more importantly, compared with other similar methods, the reduction process afteractivation was eliminated, too. In this paper, preparation process of conductive PET fabricbased on HBP-NH₂/Ag⁺as activating liquid is studied, the optimum process for electrolesscopper plating is determined by orthogonal experiment, the effect of parameters in thechemical plating process are researched and analyzed; and then, the thermodynamics andkinetics of the chemical plating reaction are analyzed, too. The kinetic equation forelectroless copper plating was calculated as follow:v=2.94+[Cu+2]^0.4501[HCHO]^-0.2432[OH^-]^1.4740[Ni²⁺]^-0.2033[NaC₄H₄O₆]^-0.5987exp {19.32{T-308/T}}Hyperbranched polyamidomine has significant advantage in industrial application dueto its simple synthesis method. In this paper, HBP-NH₂is used as the carrier of Ag ions inthe activation process. This method not only short the preparation process of conductivefabric, save the energy, but also can obtain conductive polyester fabric with conductive andwear properties easily. So we can say that this method has very important significance inthe actual applications.