TY  - EJOU
AU  - Yang, Jin 
AU  - Liang, Wen 
AU  - He, Xingyang 
AU  - Su, Ying 
AU  - Wang, Fulong 
AU  - Wang, Tie 
AU  - Huang, Jianxiang 

TI  - Experimental Synthesis of Polyacrylic-Type Superabsorbent Polymer and Analysis of Its Internal Curing Performances
T2  - Fluid Dynamics \& Materials Processing

PY  - 2022
VL  - 18
IS  - 1
SN  - 1555-2578

AB  - 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<sup>+</sup> concentration becomes higher and becomes particularly low in solutions containing Mg<sup>2+</sup>. 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%.
KW  - Superabsorbent polymer; synthesis; internal relative humidity; internal curing

DO  - 10.32604/fdmp.2022.018135