侧链介形聚合物:用中子散射研究标记骨架

P. Keller, B. Carvalho, J. Cotton, M. Lambert, F. Moussa, G. Pépy
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引用次数: 85

摘要

研究了各向同性、向列相和近晶相的侧链液晶聚合物。样品由液晶聚甲基丙烯酸酯与氘化或质子化骨架的混合物制成。用中子衍射和小角中子散射对样品进行了研究。结果特别表明,在取向的近晶相中,骨架具有高度的各向异性,并且被限制在一个近晶层内。骨干标记显示局部双层有序。
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Side chain mesomorphic polymers : studies of labelled backbones by neutron scattering
Side chain liquid crystal polymers are studied in the isotropic, nematic and smectic phases. The samples are made from a mixture of liquid crystal polymethacrylate with deuterated or protonated backbones. The samples are studied with neutron diffraction and small angle neutron scattering. The results show in particular that in the aligned smectic phase the backbone is highly anisotropic and confined within a smectic layer. The backbone labelling shows local bilayered order.
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