X-ray photoelectron spectroscopic studies of interactions between poly(4-vinylpyridine) and poly(styrenesulfonate) salts

被引:47
作者
Goh, SH [1 ]
Lee, SY
Zhou, X
Tan, KL
机构
[1] Natl Univ Singapore, Dept Chem, Singapore 119260, Singapore
[2] Natl Univ Singapore, Dept Phys, Singapore 119260, Singapore
关键词
D O I
10.1021/ma980392i
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
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 Is 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.
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收藏
页码:4260 / 4264
页数:5
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