Dynamic dissolution of persimmon leaves in DMSO and DMAc and the influence of acid-base interactions.
Applying conductivity as a measure, dynamic behavior for dissolution of persimmon leaves in two organic solvents, e.g. DMSO and DMAc, respectively, were recorded and a mathematical model described as: dC/dt = k0 + k1C + k2C2 was deduced (of which, C is the concentration dissolved, k0, k1 and k2 are the different dissolution rate constants corresponding different dissolution stages and t is the time). Results showed that the DMAc seems to be better than that of DMSO due probably to the former having a higher activation energy and smaller acid/base ratio and polarity comparing to the latter. However, for a lower temperature, it seems to be contrary due to DMSO presented greater dissolution rate constant than that of DMAc.
Xu
Yuan
Y
Department of Polymer Material and Engineering, Donghua University, 1882 W. Yan An Road, 200051 Shanghai, China.
Shen
Qing
Q
D000081:Acetamides / Q000737:chemistry / Q000378:metabolism*; D000143:Acids; D004121:Dimethyl Sulfoxide / Q000737:chemistry / Q000378:metabolism*; D029788:Diospyros / Q000737:chemistry*; D008962:Models, Theoretical; D018515:Plant Leaves / Q000737:chemistry / Q000378:metabolism*; D012995:Solubility; D012997:Solvents; D013499:Surface Properties; D013696:Temperature
D000081:Acetamides; D000143:Acids; D012997:Solvents; C013959:dimethylacetamide; D004121:Dimethyl Sulfoxide