The O52 network by molecular design: CECD tetrablock terpolymers

The O52 network by molecular design: CECD tetrablock terpolymers
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分子设计的 O52 网络:CECD 四嵌段三元共聚物

DOI:
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发表时间:
2009
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影响因子:
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通讯作者:
F. Bates
F. Bates
中科院分区:
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文献类型:
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作者:
Michael J. Bluemle;G. Fleury;T. Lodge;F. Bates

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在聚(环己基乙烯-b-乙烯-b-环己基乙烯-b-二甲基硅氧烷)(CECD)嵌段三元共聚物中,聚(二甲基硅氧烷)的长度在0和20%之间变化,产生有序相的顺序:圆柱形-网络-圆柱形。小角X射线散射和透射电子显微镜表明Pnna空间群对称性和独特的网络形态稳定的不对称分子结构和块相互作用。这些结果建立了一个新的设计原则,产生三重周期和多重连续的纳米软材料。
Varying the length of poly(dimethylsiloxane) in poly(cyclohexylethylene-b-ethylene-b-cyclohexylethylene-b-dimethylsiloxane) (CECD) block terpolymers between 0 and 20% produces the sequence of ordered phases: cylindrical-to-network-to-cylindrical. Small-angle X-ray scattering and transmission electron microscopy demonstrate Pnna space group symmetry and a unique network morphology stabilized by the asymmetric molecular architecture and block interactions. These results establish a new design principle for the generation of triply periodic and multiply continuous nanostructured soft materials.