Mesomorphic structures in flexible polymer surfactant systems due to hydrogen bonding: Poly(4-vinylpyridine)-pentadecylphenol

被引:248
作者
Ruokolainen, J
tenBrinke, G
Ikkala, O
Torkkeli, M
Serimaa, R
机构
[1] HELSINKI UNIV TECHNOL,DEPT TECH PHYS,FIN-02150 ESPOO,FINLAND
[2] HELSINKI UNIV,DEPT PHYS,FIN-00014 HELSINKI,FINLAND
[3] UNIV GRONINGEN,POLYMER CHEM LAB,9747 AG GRONINGEN,NETHERLANDS
[4] UNIV GRONINGEN,CTR MAT SCI,9747 AG GRONINGEN,NETHERLANDS
关键词
D O I
10.1021/ma9516504
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Properly selected hydrogen bonding suffices to induce mesomorphic structures in mixtures of flexible polymers and nonmesogenic surfactants. For poly(4-vinylpyridine)-3-pentadecylphenol (P4VP(PDP)(x)) complexes, the long period of the lamellar structure decreases as x(-1) (x is the number of PDP molecules per P4VP repeat unit) in complete contrast to similar polyelectrolyte systems. Upon cooling from 80 degrees C to the room temperature, the long period gradually increases and levels off at around 30 degrees C at a value which is approximately 4 Angstrom above the starting value. After an induction time, a structural transformation occurs in the highly complexed samples, due to the crystallization of the alkyl side chains. It is accompanied by a sudden decrease in the long period of approximately 5 Angstrom. However, the structure is not stable and after an additional induction time both structures are present in the samples. Arguments to explain most of the observed phenomena will be given.
引用
收藏
页码:3409 / 3415
页数:7
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