Preparation and properties of novel pH-sensitive core−shell microspheres for enhanced oil recovery

• DOI: 10.1002/pi.5390
• Publication Date: 2017-04-24T05:22:59Z
• Authors: Peng Zhang; Shixun Bai; Qing You; Wenjuan Ji; Haiyang Yu; Dandan Li
• Keywords: 02 engineering and technology; 0204 chemical engineering

A novel pH-sensitive core−shell microsphere was synthesized by growing sodium acrylate as a shell on crosslinked polyacrylamide particles the core surface-initiated atom transfer radical polymerization. The structures and characteristics of microspheres were confirmed Fourier transform infrared spectroscopy, 1H NMR SEM, transmission electron microscopy AFM. viscosity size in response to changes pH value also investigated. As kind potential profile control flooding agent, performances permeability reduction enhanced oil recovery studied designed experiments. © 2017 Society Chemical Industry