Study of Interactions Between Poly(N-Vinylformamide) and Ionic/Nonionic Surfactants by Fluorescence and Two-dimensional Nuclear Overhauser Effect Spectroscopy
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 PN...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2007
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| Online Access: | http://ndltd.ncl.edu.tw/handle/15282628977683949196 |
| Summary: | 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.
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