| Summary: | 碩士 === 國立成功大學 === 化學工程學系碩博士班 === 100 === The major idea of the research is the influence of noionic surfactant Tergtitol 15-S-9 and 15-S-30 on the polymer complexes of poly(N-vinylpyrrolidone) ( PVP ) and poly(acrylic acid) ( PAA ).
The PVP/PAA hydrophobic complexes form due to the hydrogen bond between the pyrrolidone belong to PVP and the carboxylic acid belong to PAA. When adding surfactant to PVP/PAA system, the hydrophobic interaction between PVP and PAA decrease, because the interaction between surfactant and polymer reduce the hydrogen bonding between PVP and PAA. There are hydrophobic interaction between alkyl groups in surfactant , PVP and PAA, and hydrogen bonding interaction in a portion of PAA system with the ethylene oxide ( EO ) chains of “Tergitol 15-S-n” surfactant.
The investigation divide into two sections. The first section is Tergitol 15-S-9 system, and the second section is Tergitol 15-S-30 system. The interaction between (1) PVP and surfactant (2) PAA in different pH and surfactant (3) PVP/PAA complexes in different pH and surfactant were characterized by Fluorescent, specific viscosity, pH and aggregation number in both systems.
After unscramble the result of the investigation, discovering the interaction between PAA and surfactant was week in the Tergitol 15-S-9 system, and when the EO chain of surfactant become longer the interaction between surfactant and PAA or PVP/PAA complexes increase.
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