STRUCTURE-PROPERTY RELATIONSHIPS IN SEGMENTED POLYVIOLOGEN IONENE ROTAXANES
STRUCTURE-PROPERTY RELATIONSHIPS IN SEGMENTED POLYVIOLOGEN IONENE ROTAXANES
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分段多紫罗烯罗烷的结构-性能关系
DOI：
10.1080/10601329508011061
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
H. Gibson
中科院分区：
文献类型：
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作者：
D. Loveday;G. Wilkes;M. Bheda;Y. Shen;H. Gibson
摘要首次报道了硬段含有轮烷结构的嵌段聚轮烷紫罗烯的结构-性质关系。这些紫罗烯以PTMO/MDI（PTMO Mn为650、1000或2000道尔顿）作为弹性链段，以百草枯硬链段为基础，以PF 6 −或Br−作为抗衡离子。GPC表明，这些紫罗烯相对于紫罗烯硬链段的位置具有高度可变的结构。SAXS还支持随机放置的硬片段的概念，因为电子结构域d间距是不可预测或不一致的。小角X射线散射还显示在PF 6 −衍生物中有很少的“孤多重态”，而在Br−离子交换的离子烯中有相当数量的孤立离子对。拉伸测试表明，PTMO-1000和PTMO-2000材料是具有良好性能的弹性体，但PTMO-650紫罗烯不是具有作为连续相的离子硬链段的弹性体。动态力学测试也表明，这些分段…
Abstract The first structure-property relationships are reported for segmented polyrotaxane ionenes which possess the rotaxane moiety at the hard segment. These ionenes are based on PTMO/MDI (PTMO M n of 650, 1000, or 2000 daltons) as the elastomeric segment and paraquat hard segments with either PF6 − or Br− as the counterion. GPC indicates that these ionenes have a highly variable architecture with respect to the placement of the ionene hard segment. SAXS also supports the notion of a randomly placed hard segment because the interionic domain d spacings are not predictable or consistent. SAXS also shows there are few “lone multiplets” in the PF6 − derivative whereas there are considerable numbers of isolated ion pairs in the Br− ion-exchanged ionenes. Tensile testing shows that the PTMO-1000 and PTMO-2000 materials are elastomeric with good properties, but the PTMO-650 ionene is not elastomeric with the ionic hard segment as a continuous phase. Dynamic mechanical tests also indicate that these segmented...
黄濑秀夫：Makromol Chem。
DOI：
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