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首页> 外文期刊>RSC Advances >Electromagnetic interference shielding cotton fabrics with high electrical conductivity and electrical heating behavior via layer-by-layer self-assembly route
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Electromagnetic interference shielding cotton fabrics with high electrical conductivity and electrical heating behavior via layer-by-layer self-assembly route

机译：通过层层自组装路径 具有高导电性和电加热行为的电磁干扰屏蔽棉织物

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摘要

In our paper, multi-functional cotton fabrics with electrical and electromagnetic interference (EMI) shielding properties via layer-by-layer (LbL) electrostatic self-assembly approach were prepared. Chitosan was adopted as a polycation with graphene added by solution mixing, and poly(sodium 4-styrenesulfonate) (PSS) as a polyanion was deposited on cotton fabric substrate followed by the chitosan–graphene layer alternatively. Structural and morphological characterizations of the prepared LbL samples were carried out using SEM, AFM, XPS, and surface potential techniques. As expected, surface potential value exhibited an obvious “odd–even” regular pattern, which results from the alternating deposition of PSS and chitosan–graphene layers. Further, the electrical conductivity of the 10-layer-deposited fabric reached 1.67 × 103 S m?1. The fabric also exhibits ultrastrong electromagnetic interference (EMI) shielding ability with a maximum SE value of 30.04 dB. The LbL fabric also possesses excellent electrical heating behaviors. The temperature of the resultant fabric would monotonically rise to the steady-state maximum value (ΔTmax) of 134 °C within 8 min when 7 V voltage was applied, and exhibit excellent stability and recyclability. In addition, various performances remained almost unchanged after 10 consecutive washing treatments. The modified cotton fabric with lightweight, flexible and high-performance EMI shielding properties could be applied in personal protective garments and industrial textiles.
机译：本文通过层层静电自组装方法制备了具有电磁屏蔽性能的多功能棉织物。壳聚糖被用作通过溶液混合添加石墨烯的聚阳离子，而聚（4-苯乙烯磺酸钠）（PSS）作为聚阴离子被沉积在棉织物基质上，然后是壳聚糖-石墨烯层。使用SEM，AFM，XPS和表面电势技术对制备的LbL样品进行结构和形态表征。正如预期的那样，表面电势值表现出明显的“奇偶”规则图案，这是由PSS和壳聚糖-石墨烯层的交替沉积导致的。此外，沉积10层的织物的电导率达到1.67×10 3 S m ？1 。该织物还具有超强的电磁干扰（EMI）屏蔽能力，最大SE值为30.04 dB。 LbL织物还具有出色的电加热性能。在8分钟内，所得织物的温度将单调升至134°C的稳态最大值（Δ T max ）。施加7 V电压，显示出极好的稳定性和可回收性。另外，连续10次洗涤处理后，各种性能几乎保持不变。具有轻便，灵活和高性能EMI屏蔽性能的改性棉织物可用于个人防护服和工业纺织品。

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