Park Kwang Hyun, Seo Jin Gwan, Jung Sunggyeong, Yang Jun Yong, Song Sung Ho
Division of Advanced Materials Engineering, Kongju National University, Cheonan, Chungnam 32588, Republic of Korea.
Center for Advanced Powder Materials and Parts, Kongju National University, Cheonan, Chungnam 32588, Republic of Korea.
ACS Nano. 2022 Apr 26;16(4):5672-5681. doi: 10.1021/acsnano.1c10638. Epub 2022 Mar 24.
Interest in wearable electronics has led to extensive studies on woven textiles that are mechanically robust and stretchable, have high electrical conductivities, and exhibit fire resistance properties even at high temperatures. We demonstrate a highly easy and scalable method for fabricating defect-free graphene (G) nacre-based woven electronic textiles (e-textiles) with enhanced flame-retardant properties and high electronic conductivities. The as-prepared graphene shows perfect preservation of its inherent properties without any crystal damage during subsequent exfoliation and noncovalent melamine functionalization. The defect-free graphene functionalized by melamine (-G) is well dispersed in various polar solvents. To investigate the synergistic effect of -G, quaternary artificial nacre composites are fabricated by adding manganese(II) chloride to a -G/polymer (carboxymethyl cellulose (CMC)) composite. Their mechanical, electrical, and thermal characteristics are then evaluated. The quaternary -G-Mn-CMC artificial nacre exhibits exceptionally enhanced mechanical properties (tensile strength: 613.9 MPa; toughness: 7.13 MJ m) and the best flame retardancy (even at torch heating) as compared to those of graphene oxide/reduced graphene oxide (GO/rGO)-based nacres. In this context, our approach will be helpful to future wearable electronics and fire-retardant textiles with high strength, which can accelerate the commercial viability of e-textiles.
对可穿戴电子产品的兴趣促使人们对编织纺织品进行了广泛研究，这些纺织品机械坚固且可拉伸，具有高电导率，甚至在高温下也具有耐火性能。我们展示了一种高度简便且可扩展的方法，用于制造具有增强阻燃性能和高电导率的无缺陷石墨烯（G）珍珠母基编织电子纺织品（电子纺织品）。所制备的石墨烯在随后的剥离和非共价三聚氰胺功能化过程中，其固有性能得到完美保留，且无任何晶体损伤。经三聚氰胺功能化的无缺陷石墨烯（-G）能很好地分散在各种极性溶剂中。为了研究-G的协同效应，通过向-G/聚合物（羧甲基纤维素（CMC））复合材料中添加氯化锰来制备四元人工珍珠母复合材料。然后对其机械、电学和热学特性进行评估。与基于氧化石墨烯/还原氧化石墨烯（GO/rGO）的珍珠母相比，四元-G-Mn-CMC人工珍珠母表现出异常增强的机械性能（拉伸强度：613.9 MPa；韧性：7.13 MJ m）和最佳的阻燃性（即使在火炬加热下）。在此背景下，我们的方法将有助于未来具有高强度的可穿戴电子产品和阻燃纺织品，这可以加速电子纺织品的商业可行性。
