There have been many strategies and efforts to develop nanocomposite gels for wide applications that display desirable strength and properties, such as self-healing. In this study, self-healable laponite-poly(N-isopropylacrylamide) hydrogels were prepared by γ-ray radiation employing stepwise processes that provide gelation without any chemicals for crosslinking and initiation. This method achieved self-healable properties similar to that of typical gels crosslinked using crosslinkers and initiators. We found that the main factor of the property is the homogeneous distribution of laponite particles, based on comparisons of samples prepared using various synthetic strategies. Regarding the relationship between synthetic methods and their respective properties, the samples were characterized via swelling ratios, rheological properties, cross-sectional images, and nanostructures. The uniformity of the networks was evaluated with mesoscopic structures associated with large inhomogeneities and nanostructures described with interparticle distances at different swelling ratios. The results indicate that the stepwise process of the radiation method generates dense networks with uniform structures, which leads to self-healing ability. Consequently, we suggest that gelation by γ-ray irradiation can provide better properties via effective chemical controls.

已经开发出许多策略和努力来开发用于广泛应用的纳米复合凝胶，所述凝胶显示出所需的强度和性质，例如自愈性。在这项研究中，采用逐步过程通过γ射线辐射制备了可自愈的皂石-聚（N-异丙基丙烯酰胺）水凝胶，该过程可提供胶凝作用，而无需任何化学物质进行交联和引发。该方法实现了与使用交联剂和引发剂交联的典型凝胶相似的自修复性能。我们发现，基于使用各种合成策略制备的样品的比较，该性能的主要因素是锂皂石颗粒的均匀分布。关于合成方法及其各自性质之间的关系，通过溶胀比，流变性质，横截面图像和纳米结构。用与大的不均匀性相关的介观结构和以不同溶胀率下的粒子间距离描述的纳米结构评估了网络的均匀性。结果表明，辐射法的逐步过程产生了结构均匀的致密网络，从而具有自愈能力。因此，我们建议通过有效的化学控制，通过γ射线辐照的胶凝可以提供更好的性能。结果表明，辐射法的逐步过程产生了结构均匀的致密网络，从而具有自愈能力。因此，我们建议通过有效的化学控制，通过γ射线辐照的胶凝可以提供更好的性能。结果表明，辐射法的逐步过程产生了结构均匀的致密网络，从而具有自愈能力。因此，我们建议通过有效的化学控制，通过γ射线辐照的胶凝可以提供更好的性能。