Vol.18, No.1, 2022, pp.15-27, doi:10.32604/fdmp.2022.018135
OPEN ACCESS
ARTICLE
Experimental Synthesis of Polyacrylic-Type Superabsorbent Polymer and Analysis of Its Internal Curing Performances
  • Jin Yang1,2, Wen Liang1, Xingyang He1,2,*, Ying Su1,2, Fulong Wang1, Tie Wang1, Jianxiang Huang1
1 School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan, 430068, China
2 Building Waterproof Engineering and Technology Research Center of Hubei Province, Hubei University of Technology, Wuhan, 430068, China
* Corresponding Author: Xingyang He. Email:
Received 08 July 2021; Accepted 22 September 2021; Issue published 10 November 2021
Abstract
A solution polymerization method has been used to synthesize a polyacrylic-type superabsorbent polymer (SAP). The influence of various influential factors, such as the temperature, neutralization degree, cross-linking agent, and initiator, on the water absorption capacity of SAP has been investigated. The results show that the absorption can display a non-monotonic behavior depending on the synthesis conditions. The absorption can also change according to the pH, ion types and ion concentration. As the pH value increases, the water absorption capacity decreases significantly. It also decreases if the Na+ concentration becomes higher and becomes particularly low in solutions containing Mg2+. With the addition of SAP, the compressive strength of cement mortar decreases; the internal relative humidity can be maintained at 96% within 200 hours; and autogenous shrinkage can be reduced by nearly 69%.
Keywords
Superabsorbent polymer; synthesis; internal relative humidity; internal curing
Cite This Article
Yang, J., Liang, W., He, X., Su, Y., Wang, F. et al. (2022). Experimental Synthesis of Polyacrylic-Type Superabsorbent Polymer and Analysis of Its Internal Curing Performances. FDMP-Fluid Dynamics & Materials Processing, 18(1), 15–27.
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