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Flexible conducting polymer-based cellulose substrates for on-skin applications

机译：用于皮肤上应用的柔性导电聚合物基纤维素基材

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摘要

Flexible electroactive cellulose-based substrates were successfully fabricated via electropolymerization of either polypyrrole (PPy) or poly(3,4-ethylenedioxythiophene) (PEDOT) in the presence of sodium dodecyl sulphate (SDS) onto platinum-coated cellulose substrates. Results showed that the conductive polymers were evenly deposited onto the platinum-coated cellulose substrates, respectively without compromising the submicro roughness topography of the substrate. In fact, nanoroughness feature was formed by the deposition of conductive polymers on the individual fibres of the cellulose paper, both of which are highly important in regulating cell adhesion, proliferation and migration. The various electroactive cellulose-based papers exhibited good mechanical and structural properties as well as good cytocompatibility by supporting the attachment and proliferation of immortalized human keratinocytes (HaCaT cells). In addition, copper (Cu2+) and the zinc (Zn2+) ions were proved to be successfully doped into these PPy- and PEDOT-cellulose substrates. The PEDOT resulted in the higher doping of Cu2+ and Zn2+ ions, which was confirmed by the ions release studies. Furthermore, the PEDOT-cellulose substrates exhibited significantly higher mechanical properties, better initial cell attachment and higher electrochemical capacitance as compared to PPy-cellulose substrates. Overall, the results suggested that the PEDOT-cellulose substrates could potentially be a better choice of smart skin dressings, integration interface between skin and artificial devices or implantable electronic materials.
机译：在十二烷基硫酸钠（SDS）存在下，通过聚吡咯（PPy）或聚（3,4-乙撑二氧噻吩）（PEDOT）的电聚合成功地将柔性电活性纤维素基基材制成铂包覆的纤维素基材。结果表明，导电聚合物分别均匀地沉积在铂涂覆的纤维素基材上，而不会损害基材的亚微粗糙度形貌。实际上，纳米粗糙度特征是通过在纤维素纸的单根纤维上沉积导电聚合物形成的，这两者在调节细胞粘附，增殖和迁移方面都非常重要。通过支持永生化的人类角质形成细胞（HaCaT细胞）的附着和增殖，各种基于电活性纤维素的纸表现出良好的机械和结构特性以及良好的细胞相容性。此外，事实证明，铜（Cu2 +）和锌（Zn2 +）离子已成功掺杂到这些PPy-和PEDOT-纤维素基质中。 PEDOT导致较高的Cu2 +和Zn2 +离子掺杂，这已通过离子释放研究得到了证实。此外，与PPy-纤维素底物相比，PEDOT-纤维素底物表现出明显更高的机械性能，更好的初始细胞附着和更高的电化学电容。总体而言，结果表明，PEDOT-纤维素底物可能是智能皮肤敷料，皮肤与人工设备或可植入电子材料之间集成界面的更好选择。

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  • 来源
    《Materials science & engineering》 |2020年第3期|110392.1-110392.9|共9页
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    Nanyang Technol Univ Sch Civil & Environm Engn 50 Nanyang Ave Singapore 639798 Singapore;

    Nanyang Technol Univ Sch Mat Sci & Engn 50 Nanyang Ave Singapore 639798 Singapore;

    Nanyang Technol Univ Sch Mat Sci & Engn 50 Nanyang Ave Singapore 639798 Singapore|KK Womens & Childrens Hosp KK Res Ctr 100 Bukit Timah Rd Singapore 229899 Singapore;

    Nanyang Technol Univ Sch Civil & Environm Engn 50 Nanyang Ave Singapore 639798 Singapore|Nanyang Environm & Water Res Inst Residues & Resource Reclamat Ctr 1 Cleantech Loop Singapore 637141 Singapore;

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  • 正文语种 eng
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  • 关键词

    Wound dressing; Electroactive paper; Conductivity; Polypyrrole; PEDOT:SDS;

    机译：伤口敷料;电活性纸;电导率聚吡咯;踏板：SDS;

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