Synthesis and performance study of PAM-g-PAA/PHEA and its application in purifying tellurium aerosol

Xiao, Mengqing; Liu, Feng; Zhan, Jie; Wang, Yutuo; Chen, Changwen; Zhou, Yuanlin; Li, Yintao

doi:10.1016/j.jenvrad.2023.107289

Cited by 2 publications

(1 citation statement)

References 38 publications

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“…Meanwhile, the rise in temperature induces contraction and curling in the main chains and side chains of the gel molecular structure, thereby altering the properties of functional groups. This change also affects the cross-linking bonds; upon breakage of the cross-linking bonds, the cross-linking density of the PAA/PAM double network hydrogel decreases, leading to an expansion of the mesh spaces within the network structure [43]. The results in a decrease in the gel's structural strength but facilitates the absorption of more free water, consequently enhancing the water absorption rate.…”

Section: Temperature Resistance Of Paa/pam Double Network Hydrogelmentioning

confidence: 99%

An Innovative High-Strength Double-Network Hydrogel for Use as a Drilling Fluid Plugging Agent

He,

Guo,

Bai

et al. 2024

Gels

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The problem of wellbore leakage is a key challenge in the petroleum industry, limiting drilling progress and increasing drilling costs. Plugging agents play a role in repairing leaks and fractures; however, traditional plugging materials generally have low mechanical strength, poor adaptability to permeable strata, limited water absorption and expansion capabilities, and poor temperature and salt resistance. To address these limitations, a pioneering polyacrylic acid-polyacrylamide (PAA/PAM) double-network hydrogel was synthesized through aqueous solution polymerization in this study. Its strength, water absorption, expansion, temperature resistance, salt resistance, and plugging effectiveness were comprehensively evaluated. The results demonstrate that good mechanical performance is exhibited by the synthesized hydrogel, capable of withstanding a maximum stress of approximately 3.5 MPa at a 90% strain. Excellent water absorption and expansion are observed in the synthesized double-network hydrogel, with a maximum expansion of 6 times within 30 min and 8 times after 2 h. Test results show that the hydrogel had good temperature resistance and salt resistance, maintaining a strength grade E within the experimental range. The simulated evaluation of the plugging experiment indicates that, under conditions of 130 °C and 6 MPa, the leakage rate of the drilling fluid is maintained below 5 mL/min when the double-network hydrogel is utilized. From the above experimental results, it can be illustrated that excellent mechanical properties, impressive water absorption, and expansion capabilities are exhibited by the synthesized double-network hydrogel. Furthermore, the high-temperature resistance and salt resistance of the double-network hydrogel were also demonstrated. Therefore, In comparison to traditional plugging materials, significant promise is held by this newly synthesized double-network hydrogel material as a plugging agent in drilling fluids.

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Section: Temperature Resistance Of Paa/pam Double Network Hydrogelmentioning

confidence: 99%

An Innovative High-Strength Double-Network Hydrogel for Use as a Drilling Fluid Plugging Agent

He,

Guo,

Bai

et al. 2024

Gels

View full text Add to dashboard Cite

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Synthesis and performance study of biomass-based suppressant and its application in radioactive aerosol sedimentation

Xie,

Jiang,

Zhang

et al. 2024

Indoor and Built Environment

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The decommissioning of nuclear facilities and nuclear accidents may release a various amount of radioactive aerosols, which could pose a serious threat to the natural environment and human health. Therefore, there is a need to develop an eco-friendly aerosol suppressant to control the radioactive aerosol. In this paper, carboxymethyl cellulose (CMC), polyvinyl alcohol (PVA), rhamnolipid and sophorajaponica glycolipid were selected as the raw material, and the aerosol suppressant was prepared by solution polymerization. The sample was characterized by FTIR, TGA, viscosity, surface tension and contact angle analysis. The results indicated that the grafted reaction was successful. Rhamnolipid and sophorajaponica glycolipid effectively reduced the surface tension of the copolymer solution to 27.7 mN/m, and the contact angle between the polymer solution and experimental dust was decreased to 27.36°. The aerosol sedimentation experiment showed that the suppressant had a significant effect on aerosol. The sedimentation efficiency of concrete aerosols was 87.7%, and the sedimentation efficiency of radioactive aerosols reached 90.8%. It provided an eco-friendly and effective method to quickly and easily control and remove high-concentration radioactive aerosol.

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Synthesis and performance study of PAM-g-PAA/PHEA and its application in purifying tellurium aerosol

Cited by 2 publications

References 38 publications

An Innovative High-Strength Double-Network Hydrogel for Use as a Drilling Fluid Plugging Agent

An Innovative High-Strength Double-Network Hydrogel for Use as a Drilling Fluid Plugging Agent

Synthesis and performance study of biomass-based suppressant and its application in radioactive aerosol sedimentation

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