Preparation and Properties of Fluorescent Polyacrylamide Nanospheres

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Abstract Polyacrylamide microspheres are one of the most ideal oil-displacing agents for tertiary oil recovery. But the geological conditions of low-permeability reservoirs are complex, and their mechanism of oil-displacing in the reservoirs is not clear. In recent years, due to the high sensitivity and low cost of fluorescent microspheres, they have been widely used in the oil recovery. In this paper, the fluorescent monomer trisodium 8-allyloxy-1,3,6-pyrenetrisulfonate was synthesized and copolymerized with acrylamide and 2-acrylamido-2-methylpropane sulfonic acid by reverse-phase microemulsion method to obtain fluorescent polyacrylamide microspheres. Infrared spectrometer and laser particle size instrumentation were used to study the structure of the fluorescent microspheres, and fluorescence spectroscopy was used to study the fluorescence properties of the fluorescent microspheres. The experimental results showed that the average particle size of the fluorescent microspheres was 53.76 nm with a narrow particle size distribution. With the increase of the concentration of the microspheres, the fluorescence intensity of fluorescent microspheres increased, showing a good linear relationship. And the linear correlation coefficient was 0.999. Fluorescent microspheres have stable fluorescence performance under different temperatures, pH, metal ions and static time, which can be used as a potential reservoirs fluorescent tracer.

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	Articles by authors
	Shi Daohan
	Li Peng
	Chen Yipeng
	Cao Rongrong
	Liu Yuxing
	Lü Wei
	Liu Zongbao
	Zhang Hai
	Li Aihui
	Liu Xiaofei

Keywords： trisodium 8-allyloxy-1, 3, 6-pyrenetrisulfonate acrylamide reverse microemulsion fluorescent microspheres

Received 2020-11-11;

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Shi Daohan, Li Peng, Chen Yipeng, Cao Rongrong, Liu Yuxing, Lü Wei, Liu Zongbao, Zhang Hai, Li Aihui, Liu Xiaofei.Preparation and Properties of Fluorescent Polyacrylamide Nanospheres[J] Chemcial Industry and Engineering, 2021,V38(5): 53-58

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