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Slide-ring gel: Topological gel with freely movable cross-links

机译:滑环凝胶:具有可自由移动的交联键的拓扑凝胶

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The structure of "slide-ring (SR) gel" was investigated by means of small angle neutron scattering (SANS). The SR gel was synthesized by coupling of a-cyclodextrin molecules on polyrotaxane chains. A cross-linking point of SR gel has a shape of "figure-of-eight". Two-dimensional SANS patterns for uniaxially stretched SR gels showed a "normal" butterfly pattern. This result indicates that the cross-links slide along the polymer chain so as to minimize the local strain as a "pulley". The pulley effect was found to be significant to reduce spatial inhomogeneities inherent in polymer gels. (c) 2006 Elsevier B.V. All rights reserved.
机译:通过小角度中子散射(SANS)研究了“滑环(SR)凝胶”的结构。通过在聚轮烷链上偶联α-环糊精分子来合成SR凝胶。 SR凝胶的交联点具有“八位数”的形状。单轴拉伸SR凝胶的二维SANS图案显示出“正常”蝴蝶图案。该结果表明,交联沿着聚合物链滑动,从而使作为“皮带轮”的局部应变最小化。发现滑轮效应对于减少聚合物凝胶固有的空间不均匀性是显着的。 (c)2006 Elsevier B.V.保留所有权利。

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