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Effect of polycations used in multi-walled carbon nanotubes thin films prepared by layer-by-layer technique on flexibility and gas sensing properties

机译:多壁碳纳米管薄膜在逐层技术制备的多壁碳纳米管薄膜对柔韧性和气体传感性能的影响

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In the current work, layer-by-layer self-assembled surface-oxidized multi-walled nanotubes (MWCNTs) and cationic polyelectrolyte (poly(allylamine hydrochloride)) (PAH) or poly(diallyldimethylammonium chloride) (PDDA) were synthesized on a polyester (PET) substrate for sensing NH_3 gas. The electrical and gas sensing properties (response) and flexibility characteristics of the fabricated sensors depended strongly on the amounts of adsorbed MWCNTs and polycations type. The structural configuration of MWCNTs network in MWCNTs/PDDA multilayered thin film was more compact than that of MWCNTs/PAH. The conductivity of the MWCNTs/PDDA multilayered thin film was much higher than that of MWCNTs/PAH. The MWCNTs/PAH multilayered thin film showed a higher response and flexibility than that of MWCNTs/PDDA.
机译:在当前的工作中,在聚酯上合成逐层自组装表面氧化的多壁纳米管(MWCNT)和阳离子聚电解质(POP)或聚(二丙基甲基氯化铵)(PDDA)(PDDA) (PET)基板用于感测NH_3气体。制造传感器的电气和气体传感性能(响应)和柔韧性特性强烈依赖于吸附的MWCNT和型滤色型的量。 MWCNT / PDDA多层薄膜中MWCNTS网络的结构配置比MWCNTS / PAH更紧凑。 MWCNT / PDDA多层薄膜的电导率远高于MWCNT / PAH的电导率。 MWCNT / PAH多层薄膜显示比MWCNTS / PDDA更高的响应和柔韧性。

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