Characteristic phase-separated monolayer structure observed for blends of rodlike and flexible polymers
Characteristic phase-separated monolayer structure observed for blends of rodlike and flexible polymers
复制标题
棒状和柔性聚合物共混物观察到的特征相分离单层结构
DOI：
10.1016/s0032-3861(00)00525-5
复制
发表时间：
2001
期刊：
影响因子：
4.6
通讯作者：
T. Fukuda
中科院分区：
文献类型：
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作者：
S. Yamamoto;Y. Tsujii;T. Fukuda
通过原子力研究了由棒状聚合物（四（甲氧基）-四（辛氧基）-酞菁基-聚硅氧烷（PcPS）或聚（γ-苄基-L-谷氨酸）（PBLG））和柔性聚合物（聚（异丁基乙烯基醚）（PIBVE））组成的单层聚合物共混物 显微镜（AFM）、透射电子显微镜（TEM）和表面压力-面积等温线测量。这些共混物在空气-水界面处完全相分离成两个纯单层相，这是一个准二维系统。 AFM 观察表明，PcPS 的各向异性线状结构域在 PIBVE 基体单层中形成了网络状结构。在 PcPS 域中，观察到聚合物链沿着域轮廓彼此平行排列，形成二维向列相。域形状各向异性随着 PcPS 链长的减小而减小。此外，另一种棒状聚合物PBLG也在PIBVE基质中形成类似的各向异性域，表明所观察到的形态的普遍性。
Monolayers of polymer blends composed of a rodlike polymer (tetra(methoxy)-tetra(octyloxy)-phthalocyaninato-polysiloxane (PcPS) or poly(γ-benzyl-L-glutamate)(PBLG)) and a flexible polymer (poly(isobutylvinyl ether)(PIBVE)) were studied by atomic force microscopy (AFM), transmission electron microscopy (TEM) and the surface pressure–area isotherm measurements. These blends were completely phase-separated into two pure monolayer phases at the air–water interface, a quasi-2D system. The AFM observation showed that anisotropic string-shaped domains of PcPS formed a networklike structure in the PIBVE matrix monolayer. In the PcPS domains, polymer chains were observed to be aligned parallel to each other along the domain contour, forming a 2D nematic phase. The domain-shape anisotropy decreased with decreasing chain length of PcPS. In addition, PBLG, another rodlike polymer also formed similar anisotropic domains in the PIBVE matrix, indicating the universality of the observed morphologies.
影响因子：
5.5
作者：
M. Sawamoto;C. Okamoto;T. Higashimura
通讯作者：
M. Sawamoto;C. Okamoto;T. Higashimura
Katsutoshi Nagata 和 Masami Kawaguchi：“空气/水界面处聚环氧乙烷和聚甲基丙烯酸甲酯二元混合薄膜的椭圆测量研究”。
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