ABSTRACT
Sodium succinate sulfate (MAPEG1500-OSO3Na) was prepared using maleic anhydride (MA) and polyethylene glycols (PEG1500) as raw materials. The structure was characterized by Fourier transform infrared spectrometry (FTIR) and 1H-nuclear magnetic resonance (1H NMR). Its physicochemical properties, such as surface activity, adsorption behavior, spreading performance, and rheological property, were investigated by static/dynamic surface tension (DST) measurements, contact angle techniques, and rheological techniques at 25°C. Surface tension measurement for this surfactant is about 17 mN/m. The DST results indicated that the adsorption process is mixed diffusion-kinetic adsorption mechanism. The spreading measurement demonstrated that MAPEG1500-OSO3Na possessed an excellent spreading ability. Besides, the dispersion performances of MAPEG1500-OSO3Na on barium sulfate (BaSO4) particles under different conditions have been studied by the weighing method and transmission electron microscope (TEM). These results showed that there exist optimum pH value and added amount of MAPEG1500-OSO3Na corresponding to the highest dispersion rate.
GRAPHICAL ABSTRACT
Acknowledgment
We also thank Peng Song and Guojin Li of China Research Institute of Daily Chemical Industry for the measurement of PSD and TEM.