Dispersing mechanism of carboxymethyl starch as water‐reducing agent

Zhang, Dong‐Fang; Ju, Benzhi; Zhang, Shufen; Yang, Jing

doi:10.1002/app.26152

Cited by 21 publications

(10 citation statements)

References 8 publications

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“…Beside the physicochemical properties evaluating techniques mentioned above there are more testing methods, such as: biodegradability 52, in vivo digestibility 56, light transmittance of CMS paste or solution 28, ζ‐potential and absorption capacity 52, 57, 58, conductivity of CMS dispersions 59. They are not the subject of this paper as are strictly related to specific CMS application.…”

Section: Methods Of Structure and Physicochemical Properties Of Cms Dmentioning

confidence: 99%

Medium and high substituted carboxymethyl starch: Synthesis, characterization and application

2012

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Carboxymethyl starch (CMS) could find application in many areas of industry. A review of synthesis methods of medium and high substituted CMS was presented. The influence of synthesis parameters on degree of substitution (DS) as well as reaction efficiency was described. The methodology of CMS physicochemical properties determination as well as the relation between CMS chemical characteristics (e.g. DS, amylose/amylopectin ratio) and its physicochemical properties was presented. Moreover, reported CMS applications were submitted.

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Section: Methods Of Structure and Physicochemical Properties Of Cms Dmentioning

confidence: 99%

Medium and high substituted carboxymethyl starch: Synthesis, characterization and application

2012

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“…This is due to the presence of comb‐like side‐chain structures with functional groups in the molecule, which are adsorbed and act as barriers keeping the cements particles far apart from each other to ensure proper hydration and dispersion 33–35 . On the other hand, natural carbohydrate water reducers like cellulose, starch or their derivatives can disperse cement particles via the electrosteric effect because of their high molecular weights from repeating glucose units and the presence of charged ‐OH and carboxyl functional groups within their structures 36 . Studies have thus shown that the mechanism of dispersion of these bio‐based water reducers have potential impact on the final properties of concrete such as the setting time 37 .…”

Section: Introductionmentioning

confidence: 99%

Production of bio‐based concrete water reducers from renewable resources: a review

Johnson

Sosa

Arredondo

et al. 2023

Biofuels Bioprod Bioref

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Concrete is a valuable construction material with high mechanical strength and durability, used extensively in the construction industry. It is produced by mixing sand, stones, cement, and water in different proportions depending on the desired quality of the final product. Water reducers are additional chemical ingredients used in concrete to reduce the quantity of water required in the concrete mixture. When added to concrete, water reducers increase the workability and flowability of concrete in the freshly mixed state and improve the mechanical strength and durability of the final hardened product. This review paper describes the different types and applications of concrete water reducers used in the construction industry including their working mechanisms and fluidity effects on concrete properties. It discusses the production of synthetic and bio‐based concrete water reducers and reviews the present challenges involved in the preparation of bio‐based concrete water reducers from renewable resources. © 2023 Society of Industrial Chemistry and John Wiley & Sons Ltd.

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“…ese researches show that, for all the polysaccharides such as starch, cellulose, and so on, through rational molecular design and the appropriate reaction conditions, they are probably prepared into water-reducing agents with high efficiency in concrete [15][16][17][18]. However, the systematic preparation process of the cellulose-based water-reducing agent is rarely reported.…”

Section: Introductionmentioning

confidence: 99%

Research on Wheat Straw Application in the Preparation of Superplasticizer

Guo

Zhu

Gao

et al. 2018

Advances in Materials Science and Engineering

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Wheat straw was utilized in the preparation of polycarboxylate superplasticizer (PCS) to improve its performance as well as to reduce the production cost in this paper. e addition time and pretreatment time of wheat straw in the production of PCS were detected. Orthogonal experimental design was adopted to optimize the components of reactants, and the adding time of the initiator was also examined. e PCS produced with wheat straw in this paper kept a rather high water-reducing rate. In addition, the results of some physical characteristics showed there were no obvious differences between the PCS produced with and without wheat straw, while the PCS produced with wheat straw had the longer time of coagulation. At the same time, infrared spectrum implied that the addition of wheat straw made the side chain more abundant and had little influence on the main chain of the large molecules.

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Dispersing mechanism of carboxymethyl starch as water‐reducing agent

Cited by 21 publications

References 8 publications

Medium and high substituted carboxymethyl starch: Synthesis, characterization and application

Medium and high substituted carboxymethyl starch: Synthesis, characterization and application

Production of bio‐based concrete water reducers from renewable resources: a review

Research on Wheat Straw Application in the Preparation of Superplasticizer

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