聚酰胺胺-1,2-环氧辛烷树状大分子的合成及其作为乳化液膜载体的性能

引言 树状大分子是一类三维、高度有序的新型高分子,合成时,可以在分子水平上进行设计来控制其分子大小、形状、结构和官能团,来满足不同的目的和要求,而且产物对称性好,相对分子质量的单分散性好,因而具有广阔的潜在应用领域1-6].

Synthesis of PAMAM-1,2-octenoxid dendrimer and its property as carrier in emulsion liquid membrane

A kind of novel hydrophobic dendrimer containing plenty of N functional groups was synthesized with ethylenediamine as center core，methyl acrylate as branch monomer and 1，2-octenoxid as terminated functional group by the divergent method.The molecular structure of PAMAM-1，2-octenoxid dendrimer was characterized with FTIR，¹H NMR，¹³C NMR and the results agreed to design.This dendrimer could dissolve in chloroform but not in water and cyclohexane.PAMAM-1，2-octenoxid dendrimer was used as the carrier in emulsion liquid membrane and the effects of PAMAM-1，2-octenoxid dendrimer concentration，Span-80 concentration，pH value in external aqueous phase，hydrochloric acid concentration in internal phase，Cd²⁺ concentration in external aqueous phase and the ratio of oil-interior（R_oi）on the transport rate of Cd²⁺ were investigated.The results showed that transport rate of Cd²⁺ could reach above 99.1% under the optimum conditions of 3% PAMAM-1，2-octenoxid dendrimer，4% Span-80，2% liquid olefin，91% chloroform，1.0 mol·L^-1 hydrochloric acid in interior phase and pH 7.0 in external aqueous phase.So PAMAM-1，2-octenoxid dendrimer could be used as a novel metal ions carrier.