Synthesis, characterization and performance of a polycarboxylate superplasticizer with amide structure

Liu, Xiao; Wang, Ziming; Zhu, Jie; Zheng, Yunsheng; Cui, Suping; Lan, Mingzhang; Li, Huiqun

doi:10.1016/j.colsurfa.2014.02.022

Cited by 101 publications

(46 citation statements)

References 30 publications

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“…The monomer reactivity ratios were calculated with Fineman-Ross, KelenTüdös, YBR, NLLSQ-T, and NLLSQ-P methods and found to be r AA = 10.888, r′ AA = 1.131, r TPEG = 0.012, and r′ TPEG = 0.042 for AA-TPEG copolymers. Moreover, this study also explored specific copolymerization behavior of similar structure of copolymers with steric hindrance under penultimate copolymerization equation, More common polycarboxylate superplasticizers researches are focused on performance evaluations [4,5], but studies of monomer reactivity ratios and copolymerization behavior are relatively scarce. The VI-co-PyMMP copolymer has been designed and synthesized by a freeradical copolymerization of VI and PyMMP as well as characterized by ultraviolet (UV), and the monomer reactivity ratios are determined by two methods of FinemanRoss [6][7][8] and Kelen-Tüdös [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Polycarboxylate superplasticizers of acrylic acid–isobutylene polyethylene glycol copolymers: monomer reactivity ratios, copolymerization behavior and performance

et al. 2016

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Section: Introductionmentioning

confidence: 99%

Polycarboxylate superplasticizers of acrylic acid–isobutylene polyethylene glycol copolymers: monomer reactivity ratios, copolymerization behavior and performance

et al. 2016

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“…Liu et al . synthesized a kind of amide‐structural PC via amidation reaction between poly(acrylic acid) and amino‐terminated methoxy polyethylene glycol . It was found that amide‐PCs had similar slump performance to that of conventional PC, but also had better air‐entraining capabilities, bubble retention, and concrete frost‐resistance than those of conventional PCs.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and performance of a novel polycarboxylate superplasticizer with a crosslinked topological structure

Zhao

Liao

Wang

et al. 2018

J of Applied Polymer Sci

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In this work, a novel crosslinked topological polycarboxylate superplasticizer (TPC) was successfully synthesized. In comparison with conventional comb‐shaped superplasticizer (CPC), the TPC performed better dispersion maintaining stronger water reduction capabilities. The TPC provided a large spherical space due to its crosslinked molecular structure, which was the main reason for enhanced dispersion performance. It was evident that the addition of TPC leads to a delayed and lowered heat flow peak during the early stage of the hydration process. Thermogravimetric analysis showed that the hydrated products exhibited a more stable performance in the presence of the TPC. Changing the molecular structure from a comb‐shape to a crosslinked topological could effectively improve the comprehensive performances of the PCs. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46716.

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“…They tended to synthesize PCE that could greatly accelerate the hydration of cement. In another study by Liu et al ., amide‐structural polycarboxylate superplasticizers (amide‐PCEs) was produced by amidation reaction between poly(acrylic acid) and amino‐terminated methoxy poly(ethylene glycol) (amino‐PEG) at 130–150 °C. It was shown that amide‐PCE adsorbed on the surfaces of cement particles might promote the formation of strong hydrogen bonds between amide and polyether chains to strengthen the steric hindrance effect.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characteristics of pectiniform polyurethane‐modified polycarboxylate at room temperature

Xiang

Shi

Zhang

2017

J of Applied Polymer Sci

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In this article, modified polyurethane prepolymer was synthesized by segmental synthesis method using isophorone diisocyanate, hydroxyl‐terminated silicone, polyether glycol dimethylolpropionic acid as raw materials. After that, pectiniform polycarboxylate, of which side chains were in roughly the same polymerization degree and main chains were in different lengths, was synthesized at room temperature in initiation system of hydrogen peroxide, ascorbic acid, and persulfate. Moreover, influence of various factors on the synthesis of polyurethane‐modified polycarboxylate at room temperature was discussed in detail and optimal synthesis process was determined. Results showed that redox initiation system, increasing initiator and monomer concentration, and extending reaction time needed to be adopted to complete the reaction. However, when the reaction time was over 4 h, water reducing of polycarboxylate declined rapidly. In addition, it could be found in Fourier transform infrared spectrum analysis that the CC double bonds in acrylic acid were opened and polymerized, macromolecular chain segments were successfully connected to polyoxyethylene chain segment, and resulting polycarboxylic acid molecule contained hydroxy, carboxyl, methyl, ester group, and other groups. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45873.

show abstract

Synthesis, characterization and performance of a polycarboxylate superplasticizer with amide structure

Cited by 101 publications

References 30 publications

Polycarboxylate superplasticizers of acrylic acid–isobutylene polyethylene glycol copolymers: monomer reactivity ratios, copolymerization behavior and performance

Polycarboxylate superplasticizers of acrylic acid–isobutylene polyethylene glycol copolymers: monomer reactivity ratios, copolymerization behavior and performance

Synthesis, characterization, and performance of a novel polycarboxylate superplasticizer with a crosslinked topological structure

Synthesis and characteristics of pectiniform polyurethane‐modified polycarboxylate at room temperature

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