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首页> 外文期刊>Journal of Applied Polymer Science >Preparation, Morphology, and Conductivity of Waterborne, Nanostructured, Cationic Polyurethane/Polypyrrole Conductive Coatings
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Preparation, Morphology, and Conductivity of Waterborne, Nanostructured, Cationic Polyurethane/Polypyrrole Conductive Coatings

机译：水性，纳米结构，阳离子聚氨酯/聚吡咯导电涂料的制备，形态和电导率

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To endow cellulose fiber papers with good conductivity and simultaneously retain the mechanical strength of the conductive paper, a kind of waterborne, nanostructured, cationic polyurethane (CPU)/polypyrrole (PPy) conductive coatings were developed to modify the paper surface. Fourier transform infrared spectroscopy, atomic force microscopy, and thermogravimetry-differential thermogravimetry demonstrated that the peak associated with hydrogen bonding between -NH and C=O of CPU was shifted, and chemical bonds between CPU and PPy were formed. Good compatibility between CPU and PPy was simultaneously established. Transmission electron microscopy and atomic force microscopy also suggested that PPy was encased and embedded in the CPU colloidal particles in a uniform style, and the surface of the CPU/PPy film was covered with a smooth, coherent conductive layer. With increasing pyrrole (Py) content from 5 to 20 wt %, the particle size increased from 55.08 to 74.59 nm, and the dispersity index (DPI) decreased. In addition, the conductivity of CPU/PPy increased from 0.1 to 5.0 S/cm. When the Py content was greater than 20 wt %, apparent increases in the particle size and DPI were detected as was particle coagulation; this resulted in decreased conductivity. Compared with the uncoated paper, the paper coated with CPU/PPy dispersions displayed different surface morphologies. The surface of the paper was completely enwrapped by the CPU/PPy conductive films when the coating amount was 45.42 g/m(2). With increasing coating amounts from 10.35 to 67.86 g/m(2), the conductivity of the conductive coated paper increased from 2.78 x 10(-3) to 2.16 S/cm, the tensile strength increased from 35.3 to 60.4 N m/g, and the conductive coated paper displayed good conductivity stability. (C) 2014 Wiley Periodicals, Inc.
机译：为了赋予纤维素纤维纸良好的导电性并同时保留导电纸的机械强度，开发了一种水性，纳米结构的阳离子聚氨酯（CPU）/聚吡咯（PPy）导电涂料来修饰纸表面。傅里叶变换红外光谱，原子力显微镜和热重-差示热重分析表明，与-NH和CPU的C = O之间的氢键相关的峰移动，并且在CPU和PPy之间形成化学键。同时建立了CPU与PPy之间的良好兼容性。透射电子显微镜和原子力显微镜还表明，PPy以均匀的方式包裹并嵌入CPU胶体颗粒中，并且CPU / PPy膜的表面覆盖有光滑，连贯的导电层。随着吡咯（Py）含量从5 wt％增加到20 wt％，粒径从55.08 nm增加到74.59 nm，并且分散指数（DPI）降低。另外，CPU / PPy的电导率从0.1 S / cm增加到5.0 S / cm。当Py含量大于20wt％时，检测到粒径和DPI的明显增加，以及颗粒凝结。这导致电导率降低。与未涂布纸相比，涂有CPU / PPy分散体的纸显示出不同的表面形态。当涂布量为45.42 g / m（2）时，纸张表面完全被CPU / PPy导电膜包裹。随着涂布量从10.35增加到67.86 g / m（2），导电涂层纸的电导率从2.78 x 10（-3）增加到2.16 S / cm，拉伸强度从35.3增加到60.4 N m / g，导电涂料纸显示出良好的导电稳定性。 （C）2014威利期刊公司

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