POLY(LACTIC ACID) CONTAININGβ-CYCLODEXTRIN:A PROMISING PREPOLYMER FOR THE ADSORPTION OF Cr6+AND METHYLENE BLUE

摘要

In this report, we designed and synthesized a novel poly (lactic acid)prepolymer containing β-cyclodextrin(β-CD-PTMLA). Compared with PDLLA, the obtained polymer started to decompose from 200°C,and showedbetterhydrophilicity. When used as adsorbent, it could effectively remove Cr+and methylene blue, the removal capacity depending on the pH value of the aqueous,and the optimum so-lutionpH for theremoval of Cr* and methyleneblue was 5 and 9, respectively. In addition, as a kind of prepolymer, the removal ability ofβ-CD-PTMLA to Cr6+ and methylene blue will increase with the length of its chain extension.