Pei And Surfactant Properties Of Interaction

For decades, surfactant and water-soluble polymer interaction has been a very active research topic. In this paper, the polycation in the aqueous phase polymer electrolyte with the anionic surfactant (AOT) were studied by electrostatic interaction under the compound at different concentrations, especially on surfactants Critical micelle concentration (CMC), pH value, particle size, fluorescence spectra and aggregation number, Transmittance and Zeta potential impact in the system. It was found that after the compound system CMC slightly increased, and the results of the measurement show that the conductivity is increase at different concentrations with the PEI concentration from 0.01% to 0.1%. At the same time, at different value of pH in the systems, we find that systems with different concentrations of AOT have little effect on the pH value. Dynamic light scattering is a common experimental method which is detected of particle size. Respectively when AOT concentration is 4mmol/L and 8mmol/L, the size of AOT/PEI system was measured results show that the particle size increases slightly with increasing PEI concentration. With pyrene as fluorescence probe and benzophenone as a quenching agent, was studied using fluorescence spectroscopy when AOT concentration is 8mmol/L and PEI concentration is 0.01% and 0.05%. Experimental results show that the system Microenvironment polarity is larger than before .This experiment also measured Transmittance at different PEI concentration which were found that with the PEI concentration increased, AOT/PEI/water Transmittance is decreased. When the PEI content is 0.05% and with different AOT concentrations NaNo-ZS90 particle size is measured. But it also measured the Zeta potential and found that the Zeta potential decreased gradually and then reached almost a constant value in the various systems. When the AOT concentration is fixed at 8mmol/L with the PEI concentration increased, the Zeta potential has little change in various systems.In recent years there has been an increasing interest in studies of reversed systems, it has a number of papers appeared in the last ten years on studies of the reversed systems charactertistics, but the theory is not yet reported more commonly. Dioctyl sulfosuccinate sodium salt (AOT) and PEI/n-hexane system reversed micelles has been studied in this paper. The conductance percolation in PEI/AOT/n-hexan systems induced by water volume were investigated, the percolation mechanism of the systems were studied by analyzing differentω0 ratio and temperature on the conductivity effect. According to Arrhenius-type equation to estimate the activation energy for conductance, and the solubilization capacityat at room temperature and different temperature on the solubilization capacity were studied. At the same time, the research systems not only using the conductant curves of investigated water and PEI aqueous solutions at different concentrations of PEI/AOT/n-hexane system conductivity percolation, but also determine differently fixedω0 when the effects of temperature on the electrical conductivity K. When fixedω0 for the 5, CP/CAOT=0.23 the system conductivity was investigated too. Furthermore, using Nuclear Magnetic Resonance (NMR) for differentω0 (3, 10, 20) testing 1H chemical shifts showed that: With theω0 change in the reverse micelle system in the AOT/n-hexane /water system the 1H chemical shift values from 4.113ppm moved to 4.509ppm, the same phenomenon can been seen when joining the PEI aqueous solution, but the chemical shifts value were observed slightly lower, mainly due to the different types of water within the system and the interaction between counter-ion and the respective head group .Polymer-surfactant mixtures are extensively used in a wide range of industrial, technolo-gical and domestic applications to modify and manipulate both solution and surface properties. Polyethylenimine (PEI) is widely studied .The cationic nature of the polymer is believed to be a strong polyelectrolyte at low pH and behaves like a neutral polymer at hight pH. We have reported previously that Polyoxyethylene nonylpenylether are used in a wide range of shampoo, paints, pesticides, leathers and building materials. In this paper, the behavior of Polyoxyethylene nonylpenylether (NP-15) in the presence of branched polyethylenimine (b-PEI) was investigated by surfacetence, pH measurement, cloud point and fluorescence. Critical micelle concentration (CMC) and other critical points of interaction properties such as Aggregation number were determined. The study demonstrates that with PEI/NP-15 is particularly interesting system. Overall, our results showed that this study is very important for practical.The conclusion of these experiments might provide a more rational method to design of surfactant and PEI systems in this paper, further study of the reverse microemulsion system has a certain referent value.