Adsorption of Polyamino Acids on Silica and Alumina

摘要

Homopolymer adsorption isotherms showed that both GLU and ASP adsorb onto alumina at reasonably high levels while the PRO showed little adsorption, even at high polymer concentrations. These results show that either GLU or ASP would make a good, adsorbing anchor block, while PRO would make a good, non-adsorbing, tail block for a brush forming copolymer on alumina. The results on silica were very different, and showed that the poly-L-proline would make a good anchor block, while the poly-L-(glutamic acid) would be a suitable tail block.