Molecular modeling of phenol formaldehyde resin—surfactant and its dispersion stability in salt solution

Zhao, Dan; Yang, Haoling; Wei, Yuanyuan; Yang, Weili; Li, Zhaoyang; Yang, Wenzhe; Tang, Zhongping; Wang, Liping; Li, Jin; Li, Congcong

doi:10.1007/s10965-023-03495-y

Cited by 5 publications

(5 citation statements)

References 20 publications

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“…Partially hydrolyzed polyacrylamide (HPAM) has been, by far, the dominant polymer used in enhanced oil recovery. Previous studies have reported [8,13,19,20] that HPAM has played an important role in the colloidal stability of PFR. Therefore, we chose HPAM to design the SLPFR system to study the effect of the HPAM + SLPFR systems' stability .…”

Section: Changes Of the Hpam + Slpfr Systemmentioning

confidence: 99%

“…Based on the previous study [8,21] , the solution of 10,000 mg/L NaCl, 300 mg/L SLPFR, 1500mg/L MgCl 2 or CaCl 2 , 100mg/L surfactant (Tween60,SDS,CTAB) were used, then HPAM with different molecular weights was added. According to this paper [21] , the turbidity change rate of the HPAM + SLPFR system was the smallest at the HPAM concentration of 25 mg/L, and the stability of the system was the best. Therefore, 25mg/L HPAM was preferentially selected for the follow-up research of each system.…”

Section: Changes Of the Hpam + Slpfr Systemmentioning

confidence: 99%

“…The stability of colloid mainly depends on aggregation stability. Our previous PFR research found that [7][8][9][10][11][12][13] , its stability and aggregation morphology mainly depend on the long-range Van der Waals force and the electrostatic repulsion force between colloidal particles. Speci cally, the fractal dimension [14] was calculated by the double slope method to predict the morphological and structural changes of the aggregates.…”

Section: Introductionmentioning

confidence: 99%

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Sulfonated Lignin-based Phenol-formaldehyde Resin: Stability and Aggregation Structure Changes During Aggregation

Zhao,

Yang,

Shen

et al. 2024

Preprint

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Phenol-formaldehyde resin can be used to improve oil recovery, its key lies in its aggregation behavior and blocking strength. However, the traditional phenol-formaldehyde resin used in the petroleum field was all prepared by phenol and formaldehyde. In order to get rid of the dependence on fossil resources and make full use of renewable biomass resources, we used the abandoned walnut shells of the unique agricultural and forestry crops in Gansu province, which contains lignin partially replaced phenol to synthesize the new sulfonated lignin-based phenol-formaldehyde resin (SLPFR). In this work, the aggregation behaviour and dispersion stability of SLPFR were investigated from the composition of formation water. The effects of metal cations (Na+, Mg2+, Ca2+) on the dispersion stability of SLPFR in formation water were determined by turbidimetry, and the effects of metal cations on the particle size and zeta potential of the SLPFR system were measured by dynamic light scattering method and electrophoretic light scattering method. The stability of the aggregate structure of the SLPFR system was calculated by combining the fractal dimension. In this paper, the surfactant + SLPFR system and partially hydrolyzed polyacrylamide (HPAM) + SLPFR system are designed for the specific conditions of oil reservoirs, and the effects of metal cations on the aggregation behaviour and dispersion stability of these two systems are studied. Based on the above comprehensive analysis, aggregation models were constructed to describe the aggregation behaviour and dispersion stability of the HPAM + surfactant + SLPFR system. This makes it possible to predict in real time the migration and plugging of SLPFR aggregates in formation water.

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Section: Changes Of the Hpam + Slpfr Systemmentioning

confidence: 99%

Section: Changes Of the Hpam + Slpfr Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sulfonated Lignin-based Phenol-formaldehyde Resin: Stability and Aggregation Structure Changes During Aggregation

Zhao,

Yang,

Shen

et al. 2024

Preprint

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“…In our previous research work 17 , we have explored the molecular modelling of the Tween60/SDS/CTAB-PFR system and its dispersion stability in salt solution. The concentration of Tween60/SDS/CTAB surfactants in 10000mg/L NaCl was determined to be 100mg/L.…”

Section: Effect Of the Stability Of Hpam-slpfr System In The Presence...mentioning

confidence: 99%

“…HPAM has attracted attention owing to its low cost, good viscosity and well-known physico-chemical properties, and the capability to tolerate the high mechanical forces present during ooding. 13 Previous studies have reported that [14][15][16][17] HPAM and water chemistry conditions in an aqueous environment (e.g., electrolyte types and concentration, pH and coexisting substances, surfactants, etc.) played important roles in the colloidal stability of PFR.…”

Section: Introductionmentioning

confidence: 99%

HPAM-biomass phenol-formaldehyde resin dispersion system: evaluation of stability

Zhao,

Yang,

Shen

et al. 2023

Colloid Polym Sci

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PFR combined with polymers have a wide range of industrial applications as plugging agents for pro le control and EOR. Due to the structural resemblance between lignin and phenol, there are possibilities for environmentally friendly phenol-formaldehyde resin manufacturing. SLPFR was synthesized by partially replacing phenol with lignin, which improved the utilization rate of lignin and achieved the purpose of environmental preservation and resource conservation. HPAM is the most widely used polymer in chemical methods for EOR. However, the stability of reservoirs with high salt and high temperature is weak under these conditions.To solve the problem of still low oil recovery in high-salt reservoir environments, polymer ooding is adopted, which utilises high molecular weight polymers to raise the viscosity of injected uids, thereby improving sweep e ciency and altered mobility ratio between oil and injected uid. We focus on the stability study of different molecular weight HPAM combined with SLPFR in metal ions and surfactants. The zeta potential and hydrodynamic diameter of HPAM-SLPFR system in Ca 2+ were measured by dynamic light scattering and static light scattering, and the dispersion stability was analyzed. The interfacial energy modi ed DLVO theory was introduced to evaluate the stability of its colloidal solution, which made it possible to predict the aggregation behavior of SLPFR and the comigration process of metal cations in real time.

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Sulfonated lignin-based phenol–formaldehyde resin: stability and structure changes during aggregation

Zhao,

Yang,

Shen

et al. 2024

Colloid Polym Sci

View full text Add to dashboard Cite

Molecular modeling of phenol formaldehyde resin—surfactant and its dispersion stability in salt solution

Cited by 5 publications

References 20 publications

Sulfonated Lignin-based Phenol-formaldehyde Resin: Stability and Aggregation Structure Changes During Aggregation

Sulfonated Lignin-based Phenol-formaldehyde Resin: Stability and Aggregation Structure Changes During Aggregation

HPAM-biomass phenol-formaldehyde resin dispersion system: evaluation of stability

Sulfonated lignin-based phenol–formaldehyde resin: stability and structure changes during aggregation

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