Polyelectrolyte complex nanoparticles for protection and delayed release of enzymes in alkaline pH and at elevated temperature during hydraulic fracturing of oil wells
R Barati, SJ Johnson, S McCool… - Journal of Applied …, 2012 - Wiley Online Library
Polyethylenimine‐dextran sulfate polyelectrolyte complexes (PECs) were used to entrap two
enzymes used to degrade polymer gels following hydraulic fracturing of oil wells to obtain
delayed release and to protect the enzyme from harsh conditions. Degradation, as revealed
by reduction in viscoelastic moduli, of borate‐crosslinked hydroxypropyl guar gel by
commercial enzyme loaded in polyelectrolyte nanoparticles was delayed up to 11 h,
compared with about 3 h for equivalent systems where the enzyme mixture was not …
enzymes used to degrade polymer gels following hydraulic fracturing of oil wells to obtain
delayed release and to protect the enzyme from harsh conditions. Degradation, as revealed
by reduction in viscoelastic moduli, of borate‐crosslinked hydroxypropyl guar gel by
commercial enzyme loaded in polyelectrolyte nanoparticles was delayed up to 11 h,
compared with about 3 h for equivalent systems where the enzyme mixture was not …
[引用][C] Polyelectrolyte Complex Nanoparticles for Protection and Delayed Release of Enzymes in Alkaline pH and at Elevated Temperature during Hydraulic Fracturing …
R Barati Ghahfarokhi, SJ Johnson, S McCool… - 2012 - Wiley-Blackwell
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