Study of Interactions Between Poly(N-Vinylformamide) and Ionic/Nonionic Surfactants by Fluorescence and Two-dimensional Nuclear Overhauser Effect Spectroscopy

• Main Authors: Jung-kai Tseng, 曾鎔塏
• Other Authors: None
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/15282628977683949196

碩士 === 國立成功大學 === 化學工程學系碩博士班 === 95 === In this research, interactions between PNVF and surfactants were studied by fluorescence and NMR spectroscopy. In the PNVF/SDS systems, when [SDS] is between CAC and CMC, [I1/I3]py shows a plateau and [IE/IM]py sharply decreases, indicating that the size of PNVF–SDS aggregate is uniform. From the result of the pyrene quenching experiment, the mean aggregation number can be obtained as a constant. The NOESY of the PNVF/SDS systems show that the PNVF polymer chain penetrates the SDS aggregates and the curled alkyl chain of SDS is partially associated with the PNVF polymer chain. The results of [I1/I3]py and [IE/IM]py indicate the interaction between PNVF and CTAB is very weak.  The NOESY of the PNVF/CTAB systems reveal that no short rang interaction between PNVF and CTAB in the aqueous solution of PNVF and CTAB. [I1/I3]py and [IE/IM]py of the PNVF/nonionic surfactant systems also imply that no interaction is between PNVF and nonionic surfactant.