Synthesis of the novel thermo-responsive polymers for the extraction system of noble metal ions.

合成了n -异丙基丙烯酰胺和单氮-聚硫醚衍生物的新型温度响应共聚物，用于选择性萃取银(I)、铜(I)、金（III）和钯（II）等软金属离子。考察了该共聚物与合适的反阴离子如苦味酸离子、硝酸盐离子或高氯酸盐离子的萃取效果。软金属离子如银(I)、铜(I)、金（III）和钯（II）离子被选择性地萃取到固体聚合物相中。随着聚合物中单氮-四硫醚基团与n -异丙基丙烯酰胺基团比例的增加，银离子等金属离子的萃取效率提高。研究了b类金属离子的定量提取和单氮-四硫醚分子对金属离子的液液萃取。

Novel temperature-responsive copolymers of N-isopropylacrylamide and monoaza-poly-thioether derivative, were synthesized for the selective extraction of soft metal ions such as silver (I), copper (I), gold (III) and palladium (II) ion. Metal ion extraction using the copolymer with appropriate counter anions such as picrate ion, nitrate or perchlorate ion was examined. Soft metal ions such as silver (I), copper (I), gold (III) and palladium (II) ion were extracted selectively into the solid polymer phase. The extraction efficiency of a metal ion such as silver ion increased as the increase of the ratio of the monoaza-tetrathioether group to N-isopropylacrylamide group in the polymer. The quantitative extraction of class b metal ions as well as the liquid-liquid extraction of metal ions with monoaza-tetrathioether molecule was performed.