| 초록 |
A crosslinked poly(acrylic acid) based new dehydrating agent was synthesized through solution polymerization. Taguchi method, a robust experimental design, was adopted to optimize synthetic conditions based on moisture and water absorbing capacities of the dehydrating agent. The method applied for the experiment was a standard L27 (38) orthogonal array with eight parameters and three levels. From the analysis of variance of the test results, the most effective parameters of controlling moisture absorbing capacity (MAC) and its rate were the kind of alkaline base (LiOH, NaOH, or KOH) used as neutralizing agent of acrylic acid monomer and its degree of neutralization: A maximum MAC of 40% was achieved at only 2 h under 32 oC and 50% RH when KOH was used as a base and the degree of neutralization was 90%, respectively. However, water absorbing capacity (WAC) of the resulting dehydrating agent was very low as 158 g/g, indicating that the WAC is regardless of the MAC and its rate. |
