A study of factors affecting properties of AM/AMPS/NVP terpolymeric microspheres prepared by inverse suspension polymerization

4th Global Conference on Materials Science and Engineering

Jiang, J.F.^1 ; Zhao, Q.^1 ; Lin, M.Q.^1 ; Wang, Y.F.^1 ; Dang, S.M.^1 ; Sun, F.F.^1

Research Institute of Enhanced Oil Recovery, China University of Petroleum, Beijing

102200, China^1

关键词: Functional monomer;    High-temperature experiments;    Inverse suspension polymerization;    Microsphere sizes;    Morphology and size;    Particle analyzer;    Stirring rates;    Swelling ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/103/1/012046/pdf
DOI  :  10.1088/1757-899X/103/1/012046

来源: IOP

【 摘 要 】

Terpolymeric microspheres were synthesized by the inverse suspension polymerization of functional monomers including AMPS, NVP, and AM. The morphology and size of the obtained microspheres were measured by scanning electron microscopy (SEM) and optical microscopy. Furthermore, the swelling performances of the obtained microspheres were measured with alaser particle analyzer (LPA), and the thermal stability of the microspheres obtained was measured by differential thermal analysis (DSC-TG) and high temperature experiments involving microsphere/water dispersion. The results revealed that the extreme value of the microsphere size distribution decreased from 280 μm to 20 μm as the stirring rate increased from 175 rpm to 500 rpm. At temperatures below 25°C, the maximum achieved swelling ratio of the microspheres was 21, and the thermal stability of the terpolymer microspheres was significantly higher than that of the dipolymer microspheres. The terpolymer/water dispersions were kept at 120°C for 19d before any damage was observed.