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Facile Interface Design Strategy for Improving the Uvioresistant and Self-Healing Properties of Poly(p-phenylene benzobisoxazole) Fibers
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-10-14 , DOI: 10.1021/acsami.9b11595 Long Yu 1 , Fei Lu 1 , Xinghao Huang 1 , Yingying Liu 1 , Meiyu Li 1 , Haoze Pan 1 , Leiyu Wu 1 , Yudong Huang 1 , Zhen Hu 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-10-14 , DOI: 10.1021/acsami.9b11595 Long Yu 1 , Fei Lu 1 , Xinghao Huang 1 , Yingying Liu 1 , Meiyu Li 1 , Haoze Pan 1 , Leiyu Wu 1 , Yudong Huang 1 , Zhen Hu 1
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Graphene-based coaxial hybrid fibers (CHFs) with a typical core–sheath structure have attracted extensive attention in recent years because of their potentially excellent mechanical performance. However, direct introduction of the micrometer-thick graphene stack structure on the extremely inert fiber surface with little negative effect has barely been reported so far and is still a great challenge. In the present work, a facile and cost-efficient dimensionally confined hydrothermal reduction, static adsorption, and thermal-assisted shrinkage sequential treatment strategy was developed to fabricate one-dimensional CHFs. The large-scale reduced graphene oxide–metal organic framework (RGO–UIO-66) hybrid layer and poly(p-phenylene benzobisoxazole) (PBO) fiber serve as the sheath part and core part, respectively, and the final product is denoted as PGU–CHFs. The experimental results confirmed that the prepared monofilament composite with thermoplastic polyurethane (PGU–CHF–TPU) exhibited an excellent and stable intrinsically self-healing efficiency (about 85%) over 5 cycles and an extraordinary uvioresistant performance (increased by 128%) compared to those of pristine PBO fibers after 288 h UV aging irradiation. Moreover, the anti-ultraviolet (UV) properties of PGU–CHFs at 96 h are basically at the optimum level among most of the reported literatures at present after comparison. The highly near-infrared photothermal conversion ability and stability of micrometer-thick RGO stack structure and the synergism of RGO–UIO-66 hybrid sheath layer including UV adsorption, shielding attenuation, and reflection are responsible for the satisfactorily interfacial self-healing efficiency and UV-resistance properties of PGU–CHFs, respectively. Considering the diversities and versatilities of RGO and MOFs, the proposed fabrication strategy will promisingly endow PBO fibers with great application potential in the other fields such as fiber-based sensors and smart fibers.
中文翻译：
改善聚对苯撑苯并二恶唑纤维抗紫外线和自愈性能的简便界面设计策略
具有典型的芯鞘结构的基于石墨烯的同轴混合纤维（CHF）近年来因其潜在的优异机械性能而受到广泛关注。然而，迄今为止，几乎没有报道将微米厚的石墨烯堆叠结构直接引入到极度惰性的纤维表面上，几乎没有负面影响，并且仍然是一个巨大的挑战。在目前的工作中，开发了一种简便且经济高效的尺寸受限水热还原，静态吸附和热辅助收缩序贯处理策略，以制造一维CHF。大规模还原氧化石墨烯-金属有机骨架（RGO-UIO-66）杂化层和聚（p-亚苯基苯并双恶唑（PBO）纤维分别用作皮部分和核心部分，最终产品表示为PGU–CHF。实验结果证实，与热塑性聚氨酯（PGU–CHF–TPU）制备的单丝复合材料在5个循环中表现出优异且稳定的固有自愈效率（约85％），与之相比，具有非凡的抗紫外线性能（提高了128％） 288 h紫外线老化照射后的原始PBO纤维的性能。此外，在比较后，目前大多数已报道的文献中，PGU-CHF在96 h时的抗紫外线（UV）特性基本上处于最佳水平。微米厚的RGO堆叠结构的高度近红外光热转换能力和稳定性，以及包括紫外线吸收在内的RGO–UIO-66混合鞘层的协同作用，屏蔽衰减和反射分别是PGU-CHF令人满意的界面自愈效率和抗紫外线性能的原因。考虑到RGO和MOF的多样性和通用性，提出的制造策略将有望使PBO光纤在其他领域（如基于光纤的传感器和智能光纤）具有巨大的应用潜力。
更新日期：2019-10-15
中文翻译：
改善聚对苯撑苯并二恶唑纤维抗紫外线和自愈性能的简便界面设计策略
具有典型的芯鞘结构的基于石墨烯的同轴混合纤维（CHF）近年来因其潜在的优异机械性能而受到广泛关注。然而，迄今为止，几乎没有报道将微米厚的石墨烯堆叠结构直接引入到极度惰性的纤维表面上，几乎没有负面影响，并且仍然是一个巨大的挑战。在目前的工作中，开发了一种简便且经济高效的尺寸受限水热还原，静态吸附和热辅助收缩序贯处理策略，以制造一维CHF。大规模还原氧化石墨烯-金属有机骨架（RGO-UIO-66）杂化层和聚（p-亚苯基苯并双恶唑（PBO）纤维分别用作皮部分和核心部分，最终产品表示为PGU–CHF。实验结果证实，与热塑性聚氨酯（PGU–CHF–TPU）制备的单丝复合材料在5个循环中表现出优异且稳定的固有自愈效率（约85％），与之相比，具有非凡的抗紫外线性能（提高了128％） 288 h紫外线老化照射后的原始PBO纤维的性能。此外，在比较后，目前大多数已报道的文献中，PGU-CHF在96 h时的抗紫外线（UV）特性基本上处于最佳水平。微米厚的RGO堆叠结构的高度近红外光热转换能力和稳定性，以及包括紫外线吸收在内的RGO–UIO-66混合鞘层的协同作用，屏蔽衰减和反射分别是PGU-CHF令人满意的界面自愈效率和抗紫外线性能的原因。考虑到RGO和MOF的多样性和通用性，提出的制造策略将有望使PBO光纤在其他领域（如基于光纤的传感器和智能光纤）具有巨大的应用潜力。
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