The synthesis of a new chitosan based superplasticizer and investigation of its effects on concrete properties

Arslan, Hülya; Aytaç, Uğur Semih; Bilir, Turhan; Şen, Şadi

doi:10.1016/j.conbuildmat.2019.01.209

Cited by 18 publications

(7 citation statements)

References 38 publications

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“…The deionized water was replaced every 5 h to remove unreacted CMCS and chitosan monomers. After purification, the product was dried in a vacuum oven at 60 °C for 3 h to obtain purified CCMMA [ 24 ].…”

Section: Methodsmentioning

confidence: 99%

Development and Characterization of Thermoresponsive Smart Self-Adaptive Chitosan-Based Polymer for Wellbore Plugging

Wu,

Lou,

et al. 2023

Polymers

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To meet the escalating demand for oil and gas exploration in microporous reservoirs, it has become increasingly crucial to develop high-performance plugging materials. Through free radical grafting polymerization technology, a carboxymethyl chitosan grafted poly (oligoethylene glycol) methyl ether methyl methacrylate acrylic acid copolymer (CCMMA) was successfully synthesized. The resulting CCMMA exhibited thermoresponsive self-assembling behavior. When the temperature was above its lower critical solution temperature (LCST), the nanomicelles began to aggregate, forming mesoporous aggregated structures. Additionally, the electrostatic repulsion of AA chains increased the value of LCST. By precisely adjusting the content of AA, the LCST of CCMMA could be raised from 84.7 to 122.9 °C. The rheology and filtration experiments revealed that when the temperature surpassed the switching point, CCMMA exhibited a noteworthy plugging effect on low-permeability cores. Furthermore, it could be partially released as the temperature decreased, exhibiting temperature-switchable and self-adaptive plugging properties. Meanwhile, CCMMA aggregates retained their reversibility, along with thermal thickening behavior in the pores. However, more detailed experiments and analysis are needed to validate these claims, such as a comprehensive study of the CCMMA copolymer’s physical properties, its interaction with the reservoir environment, and its performance under various conditions. Additionally, further studies are required to optimize its synthesis process and improve its efficiency as a plugging material for oil and gas recovery in microporous reservoirs.

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Section: Methodsmentioning

confidence: 99%

Development and Characterization of Thermoresponsive Smart Self-Adaptive Chitosan-Based Polymer for Wellbore Plugging

Wu,

Lou,

et al. 2023

Polymers

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“…Adições sucessivas (0,3% e 0,4%) obtiveram um aumento superior (39,11 MPa e 37,91 MPa). Nas amostras de 28 dias, idade limite sugerida pela Norma NBR 5739 [58], os valores médios de resistência à compressão evoluíram para todos os traços, sendo semelhante aos resultados encontrados no trabalho de ARSLAN et al [65] de maneira que estes autores trabalharam com a amostra de referência sem presença de aditivo químico corroborando para eficácia da influência da quitosana no presente trabalho mesmo a amostra padrão contendo PCE. No entanto, nos corpos de provas de 7 e 28 dias, obteve uma leve redução das amostras de teor de 0,4% em relação ao valor obtido com o teor de 0,3%.…”

Section: Propriedades Mecânicasunclassified

Concreto de cimento Portland dopado com quitosana: propriedades mecânicas e microestrutural

Silva

et al. 2023

Matéria (Rio J.)

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RESUMO A construção civil exerce função importante no consumo de energia em todo o mundo e influência, de forma significativa, o consumo total de recursos naturais e as emissões de CO2. A utilização de materiais renováveis está intrinsecamente relacionada à pesquisa e à inovação. A reutilização, a reciclagem, bem como o desenvolvimento de novos materiais e a descoberta de novas aplicações para materiais renováveis já conhecidos, podem contribuir de maneira expressiva para o desenvolvimento sustentável. A quitosana (CS) é um biopolímero com uma estrutura química e características únicas aliadas à sua farta disponibilidade como derivado da quitina, fazem com que suas possibilidades de aplicação nos mais diferentes campos tecnológicos, tenha se expandido consideravelmente. No presente trabalho, a utilização da quitosana para produção de concretos por meio de teores ótimos é investigada. Os valores de quitosana incorporados na dosagem foram 0,1%; 0,3% e 0,4%, com relação à massa de cimento. Os diferentes concretos obtidos foram submetidos a ensaios de propriedades mecânicas e microestrutural. Os resultados mostraram que a microestrutura foi favorecida com a utilização da quitosana. Bem como, apresentaram resultados favoráveis à incorporação dos teores utilizados de quitosana (se desatacando as amostras com 0,1% de substituição), sendo positivos quanto às propriedades mecânicas para a maioria das técnicas utilizadas, o que indica fortemente que a quitosana pode ser considerada como material promissor a ser incorporado na produção de concreto.

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“…For instance, they can be incorporated into the internal structure of concrete as fillers [ 138 ], applied to the surface of concrete as coatings [ 139 ] or added directly to corrosive environments [ 140 ]. However, few studies have been conducted on the effects of biocides on concrete properties, and some of them have shown that biocides have negative effects on concrete properties [ 141 ]. The toxicity of biocides is another serious problem, which can pose risks to wastewater treatment plants and the environment [ 142 ].…”

Section: Protection Against Miccmentioning

confidence: 99%

Review on Microbially Influenced Concrete Corrosion

et al. 2023

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Microbially influenced concrete corrosion (MICC) causes substantial financial losses to modern societies. Concrete corrosion with various environmental factors has been studied extensively over several decades. With the enhancement of public awareness on the environmental and economic impacts of microbial corrosion, MICC draws increasingly public attention. In this review, the roles of various microbial communities on MICC and corresponding protective measures against MICC are described. Also, the current status and research methodology of MICC are discussed. Thus, this review aims at providing insight into MICC and its mechanisms as well as the development of protection possibilities.

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The synthesis of a new chitosan based superplasticizer and investigation of its effects on concrete properties

Cited by 18 publications

References 38 publications

Development and Characterization of Thermoresponsive Smart Self-Adaptive Chitosan-Based Polymer for Wellbore Plugging

Development and Characterization of Thermoresponsive Smart Self-Adaptive Chitosan-Based Polymer for Wellbore Plugging

Concreto de cimento Portland dopado com quitosana: propriedades mecânicas e microestrutural

Review on Microbially Influenced Concrete Corrosion

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