CAJ | 학술논문

以2-溴乙酸、壳聚糖、2-硫代四氢咪唑啉酮为原料,合成了不同接枝率的壳聚糖-g-N-羧甲基-2-硫代-4,5-2H咪唑啉酮(CTS-g-CSIDZ),并对其理化性质进行了考察. 用配合滴定法测定了该聚合物对Cd~(2+)、CrO~(2-)_4、Fe~(3+)、Cu~(2+)、Pb~(2+)等重金属离子的吸附作用;进行了聚合物的悬菌定量实验,测定了接枝聚合物对一系列细菌的抑菌能力;采用失重法研究了合成的聚合物在1 mol/L HCl溶液中对N80钢片腐蚀的抑制作用. 结果表明,部分接枝的CSIDZ比小分子化合物具有更高的对测试的多数金属离子吸附作用的热稳定性;接枝CSIDZ具有较强的抑菌效果,最小抑菌浓度为5.10 g/L;接枝CSIDZ比小分子缓蚀剂具有更高的热稳定性,在90 ℃时对N80钢片的缓蚀效率仍然可以达到71.1 %,且用量仅为小分子化合物CSIDZ的1/2.
이2-추을산、각취당、2-류대사경미서람동위원료,합성료불동접지솔적각취당-g-N-최갑기-2-류대-4,5-2H미서람동(CTS-g-CSIDZ),병대기이화성질진행료고찰. 용배합적정법측정료해취합물대Cd~(2+)、CrO~(2-)_4、Fe~(3+)、Cu~(2+)、Pb~(2+)등중금속리자적흡부작용;진행료취합물적현균정량실험,측정료접지취합물대일계렬세균적억균능력;채용실중법연구료합성적취합물재1 mol/L HCl용액중대N80강편부식적억제작용. 결과표명,부분접지적CSIDZ비소분자화합물구유경고적대측시적다수금속리자흡부작용적열은정성;접지CSIDZ구유교강적억균효과,최소억균농도위5.10 g/L;접지CSIDZ비소분자완식제구유경고적열은정성,재90 ℃시대N80강편적완식효솔잉연가이체도71.1 %,차용량부위소분자화합물CSIDZ적1/2.
Chitosan-g-N-carboxymethyl-2-sulfo-4,5-2H imidazolinone ( CSIDZ) with different grafting ratio polymers were synthesized with 2-bromoacetic acid, chitosan, 2-sulfo imidazolinone as raw materials. Their physical and chemical characteristics were studied. Adsorptions of synthesized polymers for metal ions, such as, Cd~(2+) , CrO~(2-)_4 , Fe~(3+) , Cu~(2+) , Pb~(2+) were determined with EDTA complexometric titration. The antibacterial activity of the grafted polymer was examined against a series of test microorganisms by quantitative suspension method; corrosion inhibition efficiency of the synthesized polymer in 1 mol/L HCl solutions for N80 steel panel was measured by mass-loss method. Results from the experiments indicate that the partially grafted CSIDZ made the complexing action of partially grafted CSIDZ to most tested metal ions higher thermal stability than small molecule-CSIDZ, the grafted polymer bears a relatively strong antibacterial activity, its MIC ( minimal inhibited concentration) is 5. 10 g/L and it has a higher thermal stability than small molecule inhibitor CSIDZ. Its inhibition efficiency still amounts to 71. 1% when temperature reaches to 90 ℃ , and the amount used is only 1/2 that of CSIDZ.