Adsorption of Branched Polymers

Since a branched polymer has more than two chain ends, the determination of both the thickness of the adsorbed polymer and the adsorbance is of particular interest. Kawaguchi and Takahashi106) investigated well-characterized comb-branched polystyrene adsorbed on a chromium plate from cyclohexane solution at the theta point by ellip-sometry and compared the results with those for the corresponding linear polystyrene. 

The adsorption isotherms obtained as well as the plot of the thickness of the adsorbed layer against the bulk polymer concentration were similar to those for linear polystyrene, but the adsorbance in the plateau region for the branched polymer was larger than that 

---