Twe types of sublates

surface active substance(MO HPC

HPC)and hydrophobic substances(Cu DDTC

Ni BDODO) as the objects of the solvent sublation (SS) were studied. The IR data showed that the separation efficiency of the SS was independent of the interreaction between sublate and organic solvent. The bubble absorption of the SS was the key to the separation efficiency. The SS processes of the sublates was obedience to first order kinetics. A new characteristic parameter

apparent activation energy of attachment of the sublate to bubble

had been proposed to describe the separation efficiency of the solvent sublation. The value of E f depended on the surface activity of the sublate so that the HLB value of the sublate was used for the indication of E f. Lower HLB value corresponded to higher surface activity and lower E f

as well as larger bubble adsorption capacity and higher separation efficiency.