摘要
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.
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, Cd^2＋ concentration in external aqueous phase and the ratio of oil-interior （Roi） on the transport rate of Cd^2＋ were investigated. The results showed that transport rate of Cd^2＋ 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.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2006年第10期2491-2496,共6页
CIESC Journal
