固液界面聚羧酸系超塑化剂吸附理论研究进展

Translated title of the contribution: Advances in adsorption theory of polycarboxylate superplasticizers at solid-liquid interface

Yanwei Wang, Xin Shu, Qianping Ran, Jiaping Liu

Research output: Contribution to conferencePaperpeer-review

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Abstract

The adsorption behavior of polycarboxylate-based (PCE) superplasticizer at the solid-liquid interface is a basic problem in the research and application of admixtures. At present, the research on this problem is still at the stage of macroscopic experiments and "apparent" adsorption data. There is a lack of accurate and unified understanding on the physical and chemical principles behind PCE adsorption. This paper aims to summarize up-to-date research results on the theory of PCE adsorption, and elaborates on the main three aspects of PCE adsorption: (1) conformation, (2) adsorption free energy, and (3) adsorption kinetics. Meanwhile, the applicable conditions and limitations of existing theoretical models are analyzed. The new theoretical perspectives include a binary-structure model describing the equilibrium adsorption conformation, a scale theory describing the adsorption free energy, and the random sequential adsorption (RSA) model describing the adsorption kinetics.
Translated title of the contributionAdvances in adsorption theory of polycarboxylate superplasticizers at solid-liquid interface
Original languageChinese
Pages20-32
Number of pages13
Publication statusPublished - Apr 2018

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