Self-healing Corrosion Protective Coatings using Super Absorbent Polymer and Corrosion Inhibitor

The hydraulic performance and durability of geosynthetic clay liner containing various amounts of sodium polyacrylate polymer are experimentally studied. Sodium polyacrylate, generally known as a super-absorbent polymer, is a polymeric material with a potential of high water absorbance due to its chemical structure. In this study, sodium polyacrylate powder is used as a partial replacement of bentonite as much as 3%, 5% and 7% by the weight of bentonite. For comparison, the hydraulic performance of geosynthetic clay liner without super-absorbent polymer is also experimented. Atterberg limits, free swell index, hydraulic conductivity, self-healing capacity and wet/dry cycle tests are conducted in order to assess how super-absorbent polymer can affect the performance of geosynthetic clay liners as landfill liners and covers. The results show that the hydraulic conductivity and self-healing capacity of geosynthetic clay liner are relatively enhanced by super-absorbent polymer inclusion. The results of wet/dry cycle test show that using super-absorbent polymer as a partial replacement of bentonite considerably improves the durability of geosynthetic clay liner against wet/dry cycles. Geosynthetic clay liner containing super-absorbent polymer shows a negligible increase in hydraulic conductivity while there is a noticeable increase in hydraulic conductivity of specimen without super-absorbent polymer after 10 cycles of wetting and drying.

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Dual-action self-healing protective coatings with photothermal responsive corrosion inhibitor nanocontainers

Chemical Engineering Journal ◽

10.1016/j.cej.2020.127118 ◽

2021 ◽

Vol 404 ◽

pp. 127118 ◽

Cited By ~ 1

Author(s):

Lingwei Ma ◽

Jinke Wang ◽

Dawei Zhang ◽

Yao Huang ◽

Luyao Huang ◽

...

Keyword(s):

Corrosion Inhibitor ◽

Protective Coatings ◽

Self Healing ◽

Dual Action

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J0470204 Self-Healing Corrosion Protective Coating Using Fibered Super Absorbent Polymer

The Proceedings of Mechanical Engineering Congress Japan ◽

10.1299/jsmemecj.2014._j0470204- ◽

2014 ◽

Vol 2014 (0) ◽

pp. _J0470204--_J0470204-

Author(s):

Akihiro YABUKI ◽

Shota TANABE

Keyword(s):

Protective Coating ◽

Self Healing ◽

Super Absorbent Polymer ◽

Absorbent Polymer

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Synergetic effect of a super-absorbent polymer and a calcium nitrite corrosion inhibitor in high performance concrete durability

Revista ALCONPAT ◽

10.21041/ra.v10i2.450 ◽

2020 ◽

Vol 10 (2) ◽

pp. 206-218

Author(s):

Alejandro Duran Herrera ◽

Jennifer Anette Canul-Polanco ◽

Rogelio Dávila-Pompermaye ◽

Lucio Guillermo López-Yépez ◽

Pedro Leobardo Valdez-Tamez

Keyword(s):

Electrical Resistivity ◽

Corrosion Inhibitor ◽

High Performance ◽

High Performance Concrete ◽

Synergetic Effect ◽

Autogenous Shrinkage ◽

Concrete Durability ◽

Super Absorbent Polymer ◽

Calcium Nitrite ◽

Absorbent Polymer

In this research, the synergetic effect of a super-absorbent polymer in combination with a calcium nitrite corrosion inhibitor were evaluated as a combined technology to improve concrete durability in High Performance Concrete. For this purpose, Portland cement mortars with a water/cement ratio of 0.4 and a substitution of 9.5% of cement by silica fume were produced. The effect of this technologies was evaluated by measuring the following parameters: autogenous and drying shrinkage, surface electrical resistivity and the non-steady-state chloride migration coefficient. The results indicate that the synergistic effect of SAP + CNI improves autogenous shrinkage and surface electrical resistivity.

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Effects of super absorbent polymer on nutrient retaining property in soils of Yimeng mountain area

Environmental Science and Biological Engineering ◽

10.2495/esbe140361 ◽

2014 ◽

Author(s):

H.M. Zhang

Keyword(s):

Mountain Area ◽

Super Absorbent Polymer ◽

Absorbent Polymer

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The Influence of Monomer Composition and Surface-CrossLinking Condition on Biodegradation and Gel Strength of Super Absorbent Polymer

Polymers ◽

10.3390/polym13040663 ◽

2021 ◽

Vol 13 (4) ◽

pp. 663

Author(s):

Jung Soo Kim ◽

Dong Hyun Kim ◽

Youn Suk Lee

Keyword(s):

Treatment Time ◽

Gel Strength ◽

Control Group ◽

Cellulose Content ◽

Retention Capacity ◽

Super Absorbent Polymer ◽

Monomer Composition ◽

Cellulose Hydrogel ◽

Improved Performance ◽

Absorbent Polymer

In this study, a superabsorbent polymer (SAP) comprising poly (IA-co-cellulose-co-VSA-co-AA; ICVA) core-SAP (CSAP) was synthesized through radical polymerization using itaconic acid (IA), acrylic acid (AA), cellulose, and vinyl sulfonic acid (VSA) as monomers. The absorption performances and relative biodegradability of various compositions prepared by adjusting the amounts of cellulose and VSA with constant IA and AA content were compared. Increasing the cellulose content in CSAP contributed to improved biodegradation of the surface-crosslinked SAP (SSAP) and gel strength, although the free absorbency (FA) and centrifuge retention capacity (CRC) decreased. Increasing the VSA content resulted in strong anionicity, which enables the absorption of large amounts of water. Surface-crosslinking technology was applied to the CSAP synthesized with the optimal composition ratio to increase its absorption performance and gel strength. Improved performance of the synthesized SSAP (a CRC of 30.4 g/g, absorbency under load (AUL) of 23.3 g/g, and permeability of 55 s) was achieved by selecting the optimal surface-crosslinking treatment time and the amount of distilled water in the surface-crosslinking solution: as the latter was increased in the surface-crosslinking solution, the AUL and permeability of the SSAP were improved, and its biodegradability was found to be 54% compared to the 100% biodegradable cellulose hydrogel in the control group.

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