Related Experiment Video
Updated: Jun 30, 2026
11:31
Preparation of Hydroxy-PAAm Hydrogels for Decoupling the Effects of Mechanotransduction Cues
Published on: August 28, 2014
13.5K
Adsorption-desorption behavior of the hydrophobically associating copolymer AM/APEG/C-18/SSS.
Hongping Quan1,2, Qiangying Lu1,2, Zhonghao Chen1,2
1College of Chemistry and Chemical Engineering, Southwest Petroleum University Chengdu 610500 PR China.
RSC Advances
|May 6, 2022
Summary
A novel quadripolymer, HPAAT, was synthesized and demonstrated to effectively reduce acid rock reaction rates. This hydrophobic association polymer adsorbs onto carbonate rock, showing potential for industrial applications.
Area of Science:
- Polymer Chemistry
- Materials Science
- Corrosion Inhibition
Background:
- Acidizing is crucial in oil and gas well stimulation.
- Effective corrosion inhibitors are needed to protect equipment during acidizing.
- Hydrophobic association polymers offer unique properties for such applications.
Purpose of the Study:
- To synthesize a novel quadripolymer (HPAAT) with hydrophobic association.
- To characterize HPAAT's structure and properties.
- To evaluate HPAAT's performance as an acid corrosion inhibitor for carbonate rocks.
Main Methods:
- Quadripolymer synthesis using acrylamide, APEG, DMDAAC-18, and SSS.
- Characterization via FTIR, 1H-NMR, Ubbelohde viscometer, and GPC.
- Performance evaluation through acid-rock reaction rate tests (CO2 evolution) and adsorption/desorption studies (FTIR, SEM, UV-Vis).
Main Results:
- Successful synthesis of HPAAT with confirmed molecular structure.
- Determination of critical hydrophobic association concentration.
- Significant reduction in acid-rock reaction rates by HPAAT, even at low concentrations.
- Demonstrated adsorption and desorption of HPAAT on carbonate rock surfaces.
Conclusions:
- HPAAT is a promising hydrophobic association polymer for acid corrosion inhibition.
- The polymer's film-forming ability on carbonate rock contributes to its effectiveness.
- Further research can explore optimization for enhanced oil recovery and other industrial uses.
Related Concept Videos
03:22Colloids
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
03:00Solubility
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...
01:17Ion Exchange
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
01:29Adsorption Isotherms I
Adsorption isotherms are mathematical models that describe how molecules in a gas or liquid phase interact with surfaces. Two of the most common isotherm models are the Langmuir and Freundlich isotherms, which relate to Type I monolayer chemisorption. The Langmuir model is based on four key assumptions:• Adsorption cannot exceed monolayer coverage.• All surface sites are equivalent.• Molecules adsorb only at vacant sites.• There are no interactions between adsorbed molecules.Consider the...
01:27Surface Active Agents
Surfactants, named for their behavior at interfaces, positively adsorb at the interfaces of two phases, reducing interfacial tension. Their versatility as emulsifiers, detergents, and foaming agents stems from this ability. Surfactants, often termed amphiphiles, share the property of amphipathy, with molecules having both hydrophilic and hydrophobic portions. The hydrophilic part is called the head, and the hydrophobic part, including an elongated alkyl substituent, forms the tail.Surfactants...