ADSORPTION OF 1,4 POLYISOPRENE AT SOLID-LIQUID INTERFACE

The adsorption of trans 1,4 polyisoprene was studied on alumina and si lica gel at four temperatures. The solvents were cyclohexane, toluene, and 1:1 mixture of the two. The adsorption was found to decrease from cyclohexane > toluene > mixed solvent. The amount of adsorption was a n inverse function of temperature. For almost all the systems, the ads orption isotherms were of Langmuir type, though solvent characteristic s seems to be a more dominating factor than adsorbent in determining t he shape of the isotherm.