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Guo G, Gao G, Jiang W, Wang X, Pei M, Wang L. Synthesis of Triblock Polycarboxylate Superplasticizers with Well-Defined Structure and Its Dispersing Performance in β-Hemihydrate Gypsum. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020513. [PMID: 36677573 PMCID: PMC9865773 DOI: 10.3390/molecules28020513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/24/2022] [Accepted: 12/29/2022] [Indexed: 01/07/2023]
Abstract
In this work, a novel AaBAb-type triblock polycarboxylate superplasticizers (PCEs) with well defined molecular structures were designed and synthesized, firstly, by reversible addition-fragmentation chain transfer (RAFT) polymerization, to explore the structure-property relationship PCEs in the β-hemihydrate gypsum (β-HH) system. Three PCEs with the same molecular weight and different structure were obtained by changing the feed ratio of the RAFT agent, initiator, and monomer. The effect of the chemical structure of PCEs on their dispersing property and water reduction capacity were assessed in gypsum by measuring the flowability of pastes and the adsorption ability of PCEs on gypsum. Results showed that among three PCEs, when the monomer ratio is 5:1 and a:b = 1:1, PCE-1 exhibited a higher working efficiency, verifying the contribution of regulating structural parameters to the improvement in performances of gypsum paste, because PCE-1 showed the strongest binding capacity with calcium ions due to the relatively equal amount of carboxyl groups at both ends. The AaBAb-type PCEs provide a special advantage over the conventional comb polymer to understand the relation between the structure and property of PCEs, and a direction for further development of PCEs of high performance.
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Affiliation(s)
- Guangming Guo
- Shandong Hi-Speed Zilin Expressway Co., Ltd., Zibo 255100, China
| | - Guohua Gao
- Shandong Hi-Speed Engineering Test Co., Ltd., Jinan 250003, China
| | - Weiliang Jiang
- Shandong Hi-Speed Zilin Expressway Co., Ltd., Zibo 255100, China
| | - Xianglong Wang
- Shandong Hi-Speed Zilin Expressway Co., Ltd., Zibo 255100, China
| | - Meishan Pei
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
- Correspondence: (M.P.); (L.W.); Tel.: +86-531-89736800 (M.P. & L.W.); Fax: +86-531-87161600 (M.P. & L.W.)
| | - Luyan Wang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
- Correspondence: (M.P.); (L.W.); Tel.: +86-531-89736800 (M.P. & L.W.); Fax: +86-531-87161600 (M.P. & L.W.)
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Chen X, Tang X, Zhang C, Lu X, Guo H, Li X, Pang L, Yang Y, Dong F. Synthesis and property of
EPEG
‐based polycarboxylate ether superplasticizers via
RAFT
polymerization. POLYM ENG SCI 2022. [DOI: 10.1002/pen.26060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaodong Chen
- School of Civil Engineering Shandong Jiaotong University Jinan China
| | - Xinde Tang
- School of Civil Engineering Shandong Jiaotong University Jinan China
| | - Cuizhen Zhang
- School of Civil Engineering Shandong Jiaotong University Jinan China
| | - Xiao Lu
- School of Civil Engineering Shandong Jiaotong University Jinan China
| | - Haichao Guo
- School of Civil Engineering Shandong Jiaotong University Jinan China
| | - Xuefan Li
- School of Civil Engineering Shandong Jiaotong University Jinan China
| | - Laixue Pang
- School of Civil Engineering Shandong Jiaotong University Jinan China
| | - Yong Yang
- National Key Laboratory of High‐performance Civil Engineering Materials Jiangsu Subote New Materials Ltd. Co. Nanjing China
| | - Fuying Dong
- School of Civil Engineering Shandong Jiaotong University Jinan China
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Capacchione C, Della Sala P, Quaratesi I, Bruno I, Pauciulo A, Bartiromo AR, Iannece P, Neri P, Talotta C, Gliubizzi R, Gaeta C. Poly(Ethylene Glycol)/β-Cyclodextrin Pseudorotaxane Complexes as Sustainable Dispersing and Retarding Materials in a Cement-Based Mortar. ACS OMEGA 2021; 6:12250-12260. [PMID: 34056378 PMCID: PMC8154154 DOI: 10.1021/acsomega.1c01133] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/16/2021] [Indexed: 05/14/2023]
Abstract
Pseudorotaxane complexes between β-CD and mPEG derivatives bearing a carboxylic acid function (mPEG-COOH) were synthesized and investigated for their dispersing properties in a cement-based mortar. The formation of mPEG-COOH derivatives and their pseudorotaxanes was investigated by 1D nuclear magnetic resonance, diffusion ordered spectroscopy, and thermogravimetric analysis experiments. Mortar tests clearly indicate that mPEG-COOH@β-CD-interpenetrated supramolecules show excellent dispersing abilities. In addition, the supramolecular complexes show a retarding effect, analogously to other known β-CD-based superplasticizers in which the β-CD is covalently grafted on a polymeric backbone.
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Affiliation(s)
- Clotilde Capacchione
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Salerno, Italy
- BI-QEM
SPECIALTIES SPA, Zona
industriale, 84021 Buccino, Salerno, Italy
| | - Paolo Della Sala
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Salerno, Italy
| | - Ilaria Quaratesi
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Salerno, Italy
- BI-QEM
SPECIALTIES SPA, Zona
industriale, 84021 Buccino, Salerno, Italy
| | - Immacolata Bruno
- BI-QEM
SPECIALTIES SPA, Zona
industriale, 84021 Buccino, Salerno, Italy
| | - Antonio Pauciulo
- BI-QEM
SPECIALTIES SPA, Zona
industriale, 84021 Buccino, Salerno, Italy
| | | | - Patrizia Iannece
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Salerno, Italy
| | - Placido Neri
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Salerno, Italy
| | - Carmen Talotta
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Salerno, Italy
| | - Rocco Gliubizzi
- BI-QEM
SPECIALTIES SPA, Zona
industriale, 84021 Buccino, Salerno, Italy
| | - Carmine Gaeta
- Dipartimento
di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Salerno, Italy
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