CAJ | 학술논문

用1H NMR方法研究了分别在2 g/L聚乙烯吡咯烷酮(PVP)和2 g/L聚乙烯醇(PVA)存在下,一系列不同浓度的十二烷基硫酸钠(SDS)溶液.二维NOESY实验表明,SDS在浓度为2.5 mmol/L时形成胶束,且PVP被增溶到胶束内部;当SDS浓度低于2.5 mmol/L时,PVP与SDS之间没有明显的相互作用.自旋-自旋弛豫时间的测量结果支持这一结论.实验中没有检测到PVA与SDS之间的相互作用.
용1H NMR방법연구료분별재2 g/L취을희필각완동(PVP)화2 g/L취을희순(PVA)존재하,일계렬불동농도적십이완기류산납(SDS)용액.이유NOESY실험표명,SDS재농도위2.5 mmol/L시형성효속,차PVP피증용도효속내부;당SDS농도저우2.5 mmol/L시,PVP여SDS지간몰유명현적상호작용.자선-자선이예시간적측량결과지지저일결론.실험중몰유검측도PVA여SDS지간적상호작용.
Aqueous solutions of sodium dodecyl sulfate (SDS) at various con-centrations in 2 g/L polyvinylpyrrolidone (PVP) and 2 g/L polyvinyl alcohol(PVA), respectively, were studied by 1H NMR. Two-dimensional nuclearOverhauser enhancement spectroscopy (NOESY) experiments show that SDSstarts to micellize at a concentration of 2.5 mmol/L, with PVP solubilized inthe interior of the micelles. At SDS concentrations lower than 2.5 mmol/L, nosignificant interaction could be detected. Spin-spin relaxation measurementssupport this conclusion. The interaction between PVA and SDS was hardly de-tected.