Trimer Thiocyanate Synthesis And Application Of Cross-linked Resin And L-cystine Amino Alcohols

Polyvinyl chloride resin crosslinked trimerization thiocyanic acid was synthesized in the first part of this thesis by using trimerization thiocyanic acid as a starting material, Dioctyl phthalate as a plasticizer and Polyvinyl chloride frame for the macromolecular scaffold,whose structure was verified by IR and 1H NMR. The adsorption capacities of the Polyvinyl chloride resin to 5 different kinds of heavy metal ions (Cu2+ Zn2+,Mn2+,Ag+and Pb2+)in the given concentration range, together with the influence of adsorption time and temperature on every metal ion respectively, was investigated. Meanwhile, the adsorption capacity of the resin to each ion in the mixed solution including Cu2+ and the other 4 ions was studied. The experimental results indicated that PVC resin had the largest adsorption capacity for Cu2+ in the experimental conditions with the adsorption capacity 1.056 mmol/g, while for the other metal ions were very small with almost no adsorption of Pb2+. Moreover, the resin had a selective adsorption to Cu2+ in the mixed ion solutions with a small adsorption to other ions.L-cystine as the chiral sourse, a novel L-cystine bidentate chiral amino alcohol was synthesized in the second part by the reaction of methyl ester and Grignard reagent,whose structure was verified by IR and 1H NMR. Chiral recognition ability of L-cystine bidentate chiral amino alcohol to mandelic acid, ibuprofen enantiomers was studied respectively. The results showed that L-cystine bidentate chiral amino alcohols had no chiral recognition ability to mandelic acid and ibuprofen enantiomers.