Abstract
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 α -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.
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