Effects of Surfactants on Miscibility of the Poly(N-Vinylformamide)/Poly(N-Vinylpyrrolidone) Blend

• Main Authors: Chih-ChiehLiang, 梁志傑
• Other Authors: Sheng-Shu Hou
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/51897777551276122355

碩士 === 國立成功大學 === 化學工程學系碩博士班 === 100 === In this research, the polymer blend of poly(N-vinylformamide) (PNVF) and poly(N-vinylpyrrolidone) (PVP) were studied by differential scanning calorimetry and scanning electron microscopy. We add the third composition surfactants SDS and CTAB as a compatibilizer to help its blends compatible. Before Investigating solid state phase behavior of the blends,We explore the interaction between the polymer and surfactant in aqueous solutions. And then to compare with the solid-state polymer blend.The interaction of Polymers and surfactants were studied in aqueous solution by fluorescence spectroscopy and viscosity and that the polymer will form complexes with the surfactant in aqueous solutions, mainly due to hydrophobic interaction and electrostatic interaction between the polymer and surfactant. And the solid-state phase behavior of blends, differential scanning calorimetry results indicated that PNVF / PVP blends the case of phase separation, while PNVF and PVP were compatibility with third composition surfactant. Therefore, this research be hope that compatibility of PNVF and PVP increased by adding the third composition surfactant. When the two composition PNVF and PVP blends by adding SDS, the differential scanning calorimetry results indicated that PNVF / PVP / SDS were single glass transition temperature on certain percentage. By optical microscopy and scanning electron microscopy, PNVF / PVP / SDS ternary blend are phase separation. This is because by adding SDS, SDS will be the different compatible with PNVF and PVP, to cause PNVF and PVP both glass transition temperature decrease different, and coincidence. Polymer and surfactant in the solid-state, the hydrophobic interaction between the polymer and surfactant does not exist, mainly by the electrostatic force make it compatible. Adding cationic surfactant CTAB in the PNVF and PVP blends were studied by scanning differential thermal analysis, optical microscopy and scanning electron microscopythat, PNVF / PVP / CTAB are phase separation. Above, by adding the anionic surfactant SDS or the cationic surfactant CTAB was not compatibilization in PNVF / PVP polymer blend.