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Zhang Q, Chen J, Zhu J, Yang Y, Zhou D, Wang T, Shu X, Qiao M. Advances in Organic Rheology-Modifiers (Chemical Admixtures) and Their Effects on the Rheological Properties of Cement-Based Materials. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8730. [PMID: 36556536 PMCID: PMC9784188 DOI: 10.3390/ma15248730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/19/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Organic rheology modifiers, especially superplasticizers and viscosity-modifying admixtures (VMAs), have become key components for the workability optimization of modern concrete. The development of these admixtures is crucial to the further performance improvement of modern concrete under different casting and service conditions. Many of the former reviews have summarized research advances in respect of these admixtures from chemical and material perspectives, focusing on the effects of structure and the performance. In this paper, from a rheological perspective, an overview is provided of the microscale behavior of polycarboxylate (PCE) superplasticizers and VMAs (e.g., adsorption, conformation, and bridging) in terms of the evolution of the microstructure of the paste, the effect of chemical structure on the yield stress, the apparent viscosity and thixotropy of cement-based materials, and the structure design of these admixtures. Most importantly, in addition to a general discussion with assumptions (monolayer adsorption of a "flat" conformation, with each molecule on a single particle; statistical polymer composition), special conditions (e.g., preferential adsorption, depletion effects, hydration modification effects, and the polydispersity of the polymer composition) are discussed. Newly developed admixtures, realized through regulation of the microscale behavior, and by the modification of adsorption, topological structure, and molecular frame, are introduced.
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Affiliation(s)
- Qianqian Zhang
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co., Ltd., Nanjing 211103, China
| | - Jian Chen
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co., Ltd., Nanjing 211103, China
| | - Jiang Zhu
- Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, China
| | - Yong Yang
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co., Ltd., Nanjing 211103, China
| | - Dongliang Zhou
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co., Ltd., Nanjing 211103, China
| | - Tao Wang
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co., Ltd., Nanjing 211103, China
| | - Xin Shu
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co., Ltd., Nanjing 211103, China
| | - Min Qiao
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co., Ltd., Nanjing 211103, China
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Phase Behavior of Ion-Containing Polymers in Polar Solvents: Predictions from a Liquid-State Theory with Local Short-Range Interactions. Polymers (Basel) 2022; 14:polym14204421. [PMID: 36297998 PMCID: PMC9612006 DOI: 10.3390/polym14204421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/03/2022] [Accepted: 10/04/2022] [Indexed: 11/17/2022] Open
Abstract
The thermodynamic phase behavior of charged polymers is a crucial property underlying their role in biology and various industrial applications. A complete understanding of the phase behaviors of such polymer solutions remains challenging due to the multi-component nature of the system and the delicate interplay among various factors, including the translational entropy of each component, excluded volume interactions, chain connectivity, electrostatic interactions, and other specific interactions. In this work, the phase behavior of partially charged ion-containing polymers in polar solvents is studied by further developing a liquid-state (LS) theory with local shortrange interactions. This work is based on the LS theory developed for fully-charged polyelectrolyte solutions. Specific interactions between charged groups of the polymer and counterions, between neutral segments of the polymer, and between charged segments of the polymer are incorporated into the LS theory by an extra Helmholtz free energy from the perturbed-chain statistical associating fluid theory (PC-SAFT). The influence of the sequence structure of the partially charged polymer is modeled by the number of connections between bonded segments. The effects of chain length, charge fraction, counterion valency, and specific short-range interactions are explored. A computational App for salt-free polymer solutions is developed and presented, which allows easy computation of the binodal curve and critical point by specifying values for the relevant model parameters.
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Li Y, Zhao F, Li C, Xie X, Ban X, Gu Z, Li Z. Short-clustered maltodextrin provides cryoprotection by maintaining cell membrane homeostasis of yeast during frozen storage. Food Chem 2022; 405:134729. [DOI: 10.1016/j.foodchem.2022.134729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 10/15/2022] [Accepted: 10/21/2022] [Indexed: 11/04/2022]
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Zheng Y, Chen G, Shan H, He J, Lei J. Study on the synthesis and properties of benzoate modified with hydroxyl-terminated of the side chains of polycarboxylic superplasticizer. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.1974872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Yuqin Zheng
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Gang Chen
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Hailin Shan
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Jiarong He
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Jiaheng Lei
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
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Zhao H, Yang Y, Shu X, Wang T, Ran Q. Comparison of Adsorption Conformation of Comb‐Shaped Polycarboxylate on Tricalcium Aluminate (100) and Ettringite (100) Surfaces: A Molecular Dynamics Study. ADVANCED THEORY AND SIMULATIONS 2021. [DOI: 10.1002/adts.202100079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hongxia Zhao
- School of Material Science and Engineering Southeast University Nanjing Jiangsu 211189 China
- State Key Laboratory of High Performance Civil Engineering Materials Jiangsu Sobute New Materials Co., Ltd. Nanjing Jiangsu 210008 China
| | - Yong Yang
- School of Material Science and Engineering Southeast University Nanjing Jiangsu 211189 China
- State Key Laboratory of High Performance Civil Engineering Materials Jiangsu Sobute New Materials Co., Ltd. Nanjing Jiangsu 210008 China
| | - Xin Shu
- State Key Laboratory of High Performance Civil Engineering Materials Jiangsu Sobute New Materials Co., Ltd. Nanjing Jiangsu 210008 China
| | - Tao Wang
- State Key Laboratory of High Performance Civil Engineering Materials Jiangsu Sobute New Materials Co., Ltd. Nanjing Jiangsu 210008 China
| | - Qianping Ran
- School of Material Science and Engineering Southeast University Nanjing Jiangsu 211189 China
- State Key Laboratory of High Performance Civil Engineering Materials Jiangsu Sobute New Materials Co., Ltd. Nanjing Jiangsu 210008 China
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Influence of carboxyl group on filtration property of oil well cement paste at different temperatures investigated using molecular dynamics simulation. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112943] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Gholinezhad F, Moghbeli MR, Aghaei A, Allahverdi A. Effect of organoclay reinforced acrylate latex particles on the cement paste performance. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1699425] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Farhad Gholinezhad
- School of Chemical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran
| | - Mohammad Reza Moghbeli
- School of Chemical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran
| | - Amir Aghaei
- School of Chemical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran
| | - Ali Allahverdi
- School of Chemical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran
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Li S, Liu J, Yang Y, Qi S, Ran Q, Liu J. Synthesis, performance and working mechanism of a novel polyaryl ether superplasticizer for cement-based materials. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2018.1461638] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Shentong Li
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co. Ltd, Nanjing, Jiangsu, China
| | - Jinzhi Liu
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co. Ltd, Nanjing, Jiangsu, China
| | - Yong Yang
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co. Ltd, Nanjing, Jiangsu, China
| | - Shuai Qi
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co. Ltd, Nanjing, Jiangsu, China
| | - Qianping Ran
- State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co. Ltd, Nanjing, Jiangsu, China
| | - Jiaping Liu
- School of Material Science and Engineering, Southeast University, Nanjing, Jiangsu, China
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Ezzat M, Xu X, El Cheikh K, Lesage K, Hoogenboom R, De Schutter G. Structure-property relationships for polycarboxylate ether superplasticizers by means of RAFT polymerization. J Colloid Interface Sci 2019; 553:788-797. [PMID: 31255940 DOI: 10.1016/j.jcis.2019.06.088] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/24/2019] [Accepted: 06/25/2019] [Indexed: 12/13/2022]
Abstract
HYPOTHESIS Polycarboxylate ether (PCE) comb-copolymers are widely used as water reducing agents in the concrete industry while maintaining a high fluidity via the polymer adsorption to the cement particles. PCE copolymers with a broad range of structures are well established by Free radical polymerization, however, understanding the structure-property relationship is still complex due to the high polydispersity of PCE copolymers prepared by conventional polymerization. The influence of different structural parameters using well-defined polymeric structures is yet to be explored. EXPERIMENTS In this study, two different types of comb-like random copolymers, namely polycarboxylate ether (PCE; poly(oligo(ethylene glycol) methyl ether methacrylate/methacrylic acid)) and polysulfonate ether (PSE; poly(oligo(ethylene glycol) methyl ether acrylate/sodium 4-styrenesulfonate)), were synthesized by RAFT polymerization to enable the synthesis of polymers with controlled features. The effect of charge types and side chain lengths on the adsorption, rheology, and dispersing ability of cement pastes have been studied. FINDINGS RAFT polymerization could be used to prepare PCE random copolymers with good control over the polymer molecular weight and narrow polydispersity (Đ < 1.3). Results revealed that the ζ-potential values depend on both the charge type and side chain lengths. Copolymers containing SO3- exhibited higher absolute negative ζ-potential values than COO- while PCE copolymers with shorter side chains developed higher absolute negative ζ-potential values. On the other hand, the adsorption study demonstrated that decreasing the side chain lengths lead to higher adsorption of PCE copolymers while Copolymers with COO- groups were found to be adsorbed more than SO3- counterparts. These results are further confirmed with the rheological studies and it is found that the shorter the side chain, the lower the yield stress and the higher the dispersion of cement pastes but to a limited effect. Additionally, the charge types have a major influence on the performance of superplasticizers. This study could make further progress in establishing superplasticizers with controlled architectures for better performance.
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Affiliation(s)
- Metwally Ezzat
- Ghent University, Department of Structural Engineering, Magnel Laboratory for Concrete Research, Technologiepark-Zwijnaarde 60, 9052 Ghent, Belgium; Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium
| | - Xiaowen Xu
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium
| | - Khadija El Cheikh
- Ghent University, Department of Structural Engineering, Magnel Laboratory for Concrete Research, Technologiepark-Zwijnaarde 60, 9052 Ghent, Belgium
| | - Karel Lesage
- Ghent University, Department of Structural Engineering, Magnel Laboratory for Concrete Research, Technologiepark-Zwijnaarde 60, 9052 Ghent, Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium.
| | - Geert De Schutter
- Ghent University, Department of Structural Engineering, Magnel Laboratory for Concrete Research, Technologiepark-Zwijnaarde 60, 9052 Ghent, Belgium.
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Wang B, Qi S, Fan S, Wang T, Ma J, Han Z, Ran Q. Synthesis and properties of a novel structure of phosphated superplasticizer. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1611443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Bing Wang
- State Key Laboratory of High Performance Civil Engineering Materials (HPCEM), Jiangsu Sobute New Materials Co. Ltd, Nanjing, China
| | - Shuai Qi
- State Key Laboratory of High Performance Civil Engineering Materials (HPCEM), Jiangsu Sobute New Materials Co. Ltd, Nanjing, China
| | - Shimin Fan
- State Key Laboratory of High Performance Civil Engineering Materials (HPCEM), Jiangsu Sobute New Materials Co. Ltd, Nanjing, China
| | - Tao Wang
- State Key Laboratory of High Performance Civil Engineering Materials (HPCEM), Jiangsu Sobute New Materials Co. Ltd, Nanjing, China
| | - Jianfeng Ma
- State Key Laboratory of High Performance Civil Engineering Materials (HPCEM), Jiangsu Sobute New Materials Co. Ltd, Nanjing, China
| | - Zheng Han
- State Key Laboratory of High Performance Civil Engineering Materials (HPCEM), Jiangsu Sobute New Materials Co. Ltd, Nanjing, China
| | - Qianping Ran
- State Key Laboratory of High Performance Civil Engineering Materials (HPCEM), Jiangsu Sobute New Materials Co. Ltd, Nanjing, China
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Chuang PH, Tseng YH, Fang Y, Gui M, Ma X, Luo J. Effect of Side Chain Length on Polycarboxylate Superplasticizer in Aqueous Solution: A Computational Study. Polymers (Basel) 2019; 11:E346. [PMID: 30960330 PMCID: PMC6419158 DOI: 10.3390/polym11020346] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 01/29/2019] [Accepted: 02/02/2019] [Indexed: 12/20/2022] Open
Abstract
Molecular dynamics simulations were carried out to study the conformations of polycarboxylate ether (PCE) superplasticizers with different side chain lengths in aqueous solution. For four types of PCE molecules-PCE1, PCE2, PCE3, and PCE4-the steric hindrance between the PCE molecules increased with increasing side chain length. The side chain length not only affects water mobility but also affects the distribution of water molecules in the system. Simulation results indicate that water molecules were trapped by the PCE molecules, reducing the diffusion properties. PCE molecules with long side chains have more water molecules probability around the main chain and fewer water molecules probability near the side chain. Microscopic-level knowledge of the interaction between superplasticizer and water molecules facilitates understanding of the performance of superplasticizers in cement systems.
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Affiliation(s)
- Po-Hsiang Chuang
- Xiamen Academy of Building Research Group Co., Ltd., Xiamen 361004, China.
- KZJ New Materials Group Co., Ltd., Xiamen 361101, China.
- College of the Environment & Ecology, Xiamen University, Xiamen 361102, China.
| | - Yu-Hui Tseng
- College of Chemistry and Environment, Minnan Normal University, Zhangzhou 363000, China.
| | - Yunhui Fang
- KZJ New Materials Group Co., Ltd., Xiamen 361101, China.
| | - Miaomiao Gui
- Xiamen Academy of Building Research Group Co., Ltd., Xiamen 361004, China.
| | - Xiuxing Ma
- Xiamen Academy of Building Research Group Co., Ltd., Xiamen 361004, China.
| | - Jinjing Luo
- College of the Environment & Ecology, Xiamen University, Xiamen 361102, China.
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Abstract
Rheology of a concrete is mainly controlled by the rheological behavior of its cement paste. This is the main practical reason for the extensive research activity observed during 70 years in this research subfield. In this brief review, some areas of the research on the rheological behavior of fresh cement pastes (mixture method influence, microstructure analysis, mineral additions influence, chemical additives influence, blended cements behavior, viscoelastic behavior, flow models, and flow behavior analysis with alternative methods) are examined.
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Qu H, Fu C, Yang W, Yang Z, Zhang L. Preparation, application and water reducing mechanism of a novel fluorescent superplasticizer with improved flow retaining ability and clay tolerance. J DISPER SCI TECHNOL 2018. [DOI: 10.1080/01932691.2018.1462197] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Haojie Qu
- School of Chemistry and Materials Science School of Environment Jiangsu Provincial Key Laboratory of Material Cycling and Pollution Control, Nanjing Normal University, Nanjing, P. R. China
- Jiangsu China Railway ARIT New Materials Co., Ltd, Nanjing, China
| | - Chang’e Fu
- Jiangsu Open University, Nanjing, P. R. China
| | - Weiben Yang
- School of Chemistry and Materials Science School of Environment Jiangsu Provincial Key Laboratory of Material Cycling and Pollution Control, Nanjing Normal University, Nanjing, P. R. China
| | - Zhen Yang
- School of Chemistry and Materials Science School of Environment Jiangsu Provincial Key Laboratory of Material Cycling and Pollution Control, Nanjing Normal University, Nanjing, P. R. China
- Changzhou Institute of Innovation & Development, Nanjing Normal University, Changzhou, China
| | - Limin Zhang
- School of Chemistry and Materials Science School of Environment Jiangsu Provincial Key Laboratory of Material Cycling and Pollution Control, Nanjing Normal University, Nanjing, P. R. China
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Zhang L, Kong X, Xing F, Dong B, Wang F. Working mechanism of post-acting polycarboxylate superplasticizers containing acrylate segments. J Appl Polym Sci 2017. [DOI: 10.1002/app.45753] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Liran Zhang
- School of Civil Engineering, Guangdong Province Key Laboratory of Durability for Marine Civil Engineering; Shenzhen University; Shenzhen 518060 China
- Department of Civil Engineering; Tsinghua University; Beijing 100084 China
| | - Xiangming Kong
- Department of Civil Engineering; Tsinghua University; Beijing 100084 China
| | - Feng Xing
- School of Civil Engineering, Guangdong Province Key Laboratory of Durability for Marine Civil Engineering; Shenzhen University; Shenzhen 518060 China
| | - Biqin Dong
- School of Civil Engineering, Guangdong Province Key Laboratory of Durability for Marine Civil Engineering; Shenzhen University; Shenzhen 518060 China
| | - Fang Wang
- Department of Civil Engineering; Tsinghua University; Beijing 100084 China
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