Utrera-Barrios Saul, Hernández Santana Marianella, Verdejo Raquel, López-Manchado Miguel A
Institute of Polymer Science and Technology (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain.
ACS Omega. 2020 Jan 17;5(4):1902-1910. doi: 10.1021/acsomega.9b03516. eCollection 2020 Feb 4.
The development of self-healing rubbers is currently under investigation as a strategy to promote their reuse and, hence, reduce their waste. However, autonomous, multicycle self-healing rubbers with good mechanical properties have so far proven difficult to achieve. Here, mechanically robust composites based on epoxidized natural rubber (ENR) and thermally reduced graphene oxide (TRGO) were successfully designed and prepared with a high healing efficiency of up to 85% at room temperature without applying external stimuli. The incorporation of TRGO not only improves the mechanical performance in more than 100% in relation to pristine ENR but also promotes the hydrogen bonding interactions with the rubber. This leads to a homogenous dispersion of TRGO within the ENR matrix, which further increases its self-healing capability.
目前正在研究自愈橡胶的开发，作为促进其再利用从而减少其浪费的一种策略。然而，迄今为止，具有良好机械性能的自主多循环自愈橡胶已被证明难以实现。在此，成功设计并制备了基于环氧化天然橡胶（ENR）和热还原氧化石墨烯（TRGO）的机械坚固复合材料，在室温下无需外部刺激即可实现高达85%的高愈合效率。TRGO的加入不仅使相对于原始ENR的机械性能提高了100%以上，还促进了与橡胶的氢键相互作用。这导致TRGO在ENR基质中均匀分散，进一步提高了其自愈能力。
