Synthesis and performance of a series of novel low-molecular-weight superplasticisers with star-shaped phosphate frame
Source abstract
Abstract
A new type of small-molecule phosphate superplasticiser (SP) was synthesised in one pot by the phosphorylation reaction of star-polyether with phosphoric acid. By varying the structure of the initiator polyamines, star-shaped small-molecule phosphate SPs with different molecular weights and anionic charge densities were prepared. The synthesised SPs were characterised by means of proton nuclear magnetic resonance, high-performance liquid chromatography, Fourier transform infrared spectroscopy and gel permeation chromatography. Their dispersion ability, adsorption behaviour and retardation effect on cement hydration were investigated. It was proved that the star-shaped small-molecule phosphate compounds with longer polyether chains and more phosphate groups could be successfully applied as anti-clay SPs. The findings provide useful information for optimising the performance of phosphated small-molecule chemical admixtures in the future.
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Research context
OpenAlex topics: Concrete and Cement Materials Research · Innovative concrete reinforcement materials · Chemical Synthesis and Characterization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co., Ltd, Nanjing, China
Linyi University, Linyi, China
State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co., Ltd, Nanjing, China (corresponding author: )
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