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首页> 外文期刊>Advanced Functional Materials >Zinc Oxide Nano-Spicules on Polylactic Acid for Super-Hydrophilic and Bactericidal Surfaces
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Zinc Oxide Nano-Spicules on Polylactic Acid for Super-Hydrophilic and Bactericidal Surfaces

机译：氧化锌纳米分子对多亲水性和杀菌表面的聚乳酸纳米分子

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摘要

The artificial construction of nature-mimic inorganic-organic heterostructures is an emerging technological interest for protective surface applications. Mimicking the spikiness of sea urchin spicules for their protective function, here, the synthesis of zinc oxide (ZnO) nanometer-scale spicules grown from micrometer-scale polylactic acid (PLA) beads and fibers as super-hydrophilic and bactericidal surfaces is reported. The thermodynamic mechanism behind the interfacial assembly of pre-entrapped ZnO nanoparticles right at the PLA-water interfaces above the glass transition temperature of PLA, allowing for the follow-up growth of nano-spicules on the PLA templates is uncovered. This sea urchin-like topography of ZnO nano-spicules induces super-hydrophilicity while generating reactive oxygen species as well as allowing the stabbing action of nano-spicules. All of the above help enhance the bactericidal activity against both gram-positive and gram-negative bacteria in an unprecedentedly effective way. The findings conceptualize a new strategy to spontaneously assemble nanoparticles at the polymer-liquid interfaces, enabling various heterostructures with topography-induced functions.
机译：性质模拟无机 - 有机异质结构的人工结构是保护表面应用的新兴技术兴趣。据报道，在这里模仿海胆分子的刺激性，这里，报道了从微米级聚乳酸（PLA）珠子和纤维生长的氧化锌（ZnO）纳米级分子的合成作为超亲水和杀菌表面。在PLA的玻璃化转变温度的PLA水界面处的预夹住ZnO纳米颗粒的界面组装后面的热力学机制，允许PLA模板上的纳米分子的后续生长。这种海胆状的ZnO纳米穗状体的地形诱导超亲水性，同时产生反应性氧物质，以及允许纳米穗的刺伤作用。以前处于前所未有的有效方法，上述所有上述有助于增强针对革兰氏阳性和革兰氏阴性细菌的杀菌活性。该研究结果概念化了一种新的策略来在聚合物 - 液体界面上自发地组装纳米颗粒，从而实现各种具有形状诱导的功能的异质结构。

著录项

  • 来源
    《Advanced Functional Materials》 |2021年第36期|2100844.1-2100844.9|共9页
  • 作者

    Park Bum Chul; Byun Sang Won; Ju Youngjun; Lee Dae Beom; Shin Ji Beom; Yeon Kyung-Min; Kim Yu Jin; Sharma Prashant; Cho Nam-Hyuk; Kim Jungbae; Kim Young Keun;

  • 作者单位

    Korea Univ Dept Mat Sci & Engn Seoul 02481 South Korea|Korea Univ Brain Korea Ctr Smart Mat & Devices Seoul 02841 South Korea;

    Korea Univ Dept Mat Sci & Engn Seoul 02481 South Korea;

    Korea Univ Dept Chem & Biol Engn Seoul 02841 South Korea;

    Korea Univ Dept Mat Sci & Engn Seoul 02481 South Korea;

    Korea Univ Dept Mat Sci & Engn Seoul 02481 South Korea;

    Samsung C&T Corp Engn Ctr Seoul 05288 South Korea;

    Korea Univ Inst High Technol Mat & Devices Seoul 02841 South Korea;

    Seoul Natl Univ Coll Med Dept Microbiol & Immunol Seoul 03080 South Korea|Seoul Natl Univ Coll Med Dept Biomed Sci Seoul 03080 South Korea;

    Seoul Natl Univ Coll Med Dept Microbiol & Immunol Seoul 03080 South Korea|Seoul Natl Univ Coll Med Dept Biomed Sci Seoul 03080 South Korea;

    Korea Univ Dept Chem & Biol Engn Seoul 02841 South Korea;

    Korea Univ Dept Mat Sci & Engn Seoul 02481 South Korea|Korea Univ Brain Korea Ctr Smart Mat & Devices Seoul 02841 South Korea|Korea Univ Inst High Technol Mat & Devices Seoul 02841 South Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    bactericidal surfaces; biomimetics; inorganic#8211; organic heterostructures; interfacial assembly; super#8208; hydrophilicity;

    机译：杀菌表面;生物体;无机＆＃8211;有机异质结构;界面组装;超级＆＃8208;亲水性;

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