A layer-by-layer (LbL) self-assembly of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT-PSS) on lignocellulose wood microfibres was used to make conductive fibres and paper. Polycations such as poly(allylamine hydrochloride) (PAH), and poly(ethyleneimine) (PEI) were used in alternate deposition with anionic conductive polythiophene (PEDOT-PSS) to construct the multilayer nanofilms on wood microfibres. Current-voltage characterization was measured on single fibres using a Keithley probe measurement system after deposition of every PEDOT-PSS monolayer to study the electrical properties of the coating. The conductivity of the microfibres increased linearly with increasing number of bilayers of PEDOT-PSS/polycation. The measured conductivities of the coated microfibres ranged from 1 to 10 S cm~(-1). It was also observed that the conductivity of the fibres (i.e., coating of PEDOT-PSS) depends upon the type of polycations used to alternate with the polythiophene. In this work we have demonstrated successful scale integration from nano to micro and macroscale (nanocoating-microfibres-macropaper) in developing new paper material. The conductive paper that has been produced (and its fabrication method) can be used for the development of smart paper technology on monitoring of electrical, and optical/electrical signals.
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机译：木质纤维素木微纤维上的聚（3,4-乙撑二氧噻吩）-聚（苯乙烯磺酸盐）（PEDOT-PSS）的层（LbL）自组装被用于制造导电纤维和纸。聚阳离子（如聚烯丙胺盐酸盐（PAH）和聚（亚乙基亚胺）（PEI））与阴离子导电聚噻吩（PEDOT-PSS）交替沉积，以在木材微纤维上构建多层纳米膜。在每个PEDOT-PSS单层沉积之后，使用吉时利探针测量系统在单根纤维上测量电流-电压特性，以研究涂层的电性能。随着PEDOT-PSS /聚阳离子双层的增加，微纤维的电导率线性增加。涂层微纤维的电导率的测量范围为1至10 S cm〜（-1）。还观察到纤维的电导率（即，PEDOT-PSS的涂层）取决于用来与聚噻吩交替的聚阳离子的类型。在这项工作中，我们证明了在开发新的纸材料中，成功地实现了从纳米到微米和宏观（纳米涂层-微纤维-宏观纸）的规模整合。已生产的导电纸（及其制造方法）可用于智能纸技术的开发，以监控电信号和光/电信号。
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