
Keywords: AA, acrylic acid; APEP, alkenyl methyl polyoxyethylene polyoxypropylene ether; APS, ammonium persulphate; α-H, α-calcium sulfate hemihydrate; β-H, β-calcium sulfate hemihydrate; MA, maleic anhydride; N-MAM, N-hydroxymethyl acrylamide; PC, polycarboxylates