پديدآورندگان :
Hassanpour Mehrnaz Polymer Chemistry Research Laboratory, Faculty of Chemistry and Petroleum Science, Shahid Beheshti University, P. O. Box: 1983969411, Tehran, Iran , Mirkani Ahmad a.mirkani@mail.sbu.ac.ir Polymer Chemistry Research Laboratory, Faculty of Chemistry and Petroleum Science, Shahid Beheshti University, P. O. Box: 1983969411, Tehran, Iran , Alijani Naser Polymer Chemistry Research Laboratory, Faculty of Chemistry and Petroleum Science, Shahid Beheshti University, P. O. Box: 1983969411, Tehran, Iran , Rahmatpour Ali Polymer Chemistry Research Laboratory, Faculty of Chemistry and Petroleum Science, Shahid Beheshti University, P. O. Box: 1983969411, Tehran, Iran
كليدواژه :
polymer nanoparticles , Partially hydrolyzed polyacrylamide , Semi , IPN hydrogels , guar gum , Magnetic nanoparticles , Fe3O4@SiO2 , enhanced oil recovery
چكيده فارسي :
The synthesis and characterization of semi-IPN partially hydrolyzed polyacrylamide (HPAm)/ guar gum (GG) /core-shell Fe3O4@SiO2 for the development of hydrogel system used in enhanced oil recovery is described. nanocomposite hydrogels were synthesized in an aqueous solution by an in situ simultaneous cross-linking reactions between partially hydrolyzed polyacrylamide chains and chromium acetate as an ionic crosslinker in the presence of GG. The structural, surface and magnetic characteristics of the semi-IPN magnetic nanocomposite hydrogels were investigated by emission scanning electron microscopy(SEM), powder X-ray diffraction(XRD), Fourier transform infrared(FT-IR), Vibrating Sample Magnetometer(VSM) and thermogravimetric analysis (TGA). The nanocomposite gels were prepared with low crosslinker concentration (200 ppm chromium acetate). The rheological analysis showed that the storage modulus of semi-IPN nanocomposite hydrogels increased with the addition of 1 wt% NPS, but further due to participation in the cross-linking reaction and as a result of increasing the cross-linking density, water swelling was reduced. Considering that nanocomposite hydrogels have a higher resistance in synthetic oil reservoir water compared to unfilled hydrogels, which is a desirable feature. The results showed that the new semi-IPN magnetic nanocomposite hydrogels could be potentially suitable for the area of chemically enhanced oil recovery.
