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|Title:||X-ray photoelectron spectroscopic studies of interactions between poly(4-vinylpyridine) and poly(styrenesulfonate) salts|
|Authors:||Goh, S.H. |
|Source:||Goh, S.H.,Lee, S.Y.,Zhou, X.,Tan, K.L. (1998-06-30). X-ray photoelectron spectroscopic studies of interactions between poly(4-vinylpyridine) and poly(styrenesulfonate) salts. Macromolecules 31 (13) : 4260-4264. ScholarBank@NUS Repository.|
|Abstract:||Poly(4-vinylpyridine) (P4VPy) was blended with the lithium or zinc salt of poly(styrenesulfonate) (PSSLi and PSSZn, respectively). P4VPy formed complexes with PSSZn but not with PSSLi in water/ethanol (2:1) solutions, indicating the presence of a strong interaction between PSSZn and P4VPy. P4VPy is immiscible with PSSLi, as shown by the appearance of two glass transitions in each P4VPy/PSSLi blend. Fourier transform infrared spectroscopic measurements showed the development of a new pyridine ring mode in P4VPy/PSSZn complexes. X-ray photoelectron spectroscopic (XPS) studies showed the development of high-binding-energy (BE) N 1s peaks in all the P4VPy/PSSZn complexes but not in the P4VPy/PSSLi blends. Interaction between P4VPy and Zn2+ is also evidenced by the development of a low-BE S 2p doublet in each complex. Therefore, XPS reveals the existence of coordination between Zn2+ and P4VPy but not between Li+ and P4VPy.|
|Appears in Collections:||Staff Publications|
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