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首页> 外文期刊>Journal of Polymers and the Environment >Layer-by-Layer Deposition of Antibacterial Polyelectrolytes on Cotton Fibres
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Layer-by-Layer Deposition of Antibacterial Polyelectrolytes on Cotton Fibres

机译：棉纤维上抗菌聚电解质的逐层沉积

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摘要

The introduction of molecules with biological properties on textile materials is essential for a number of biotechnological applications. With the purpose of testing new processes applied to textiles, in this study, we present the first results on the feasibility of using the Layer-by-Layer (LbL) deposition process in natural fibers such as cotton, with natural polyelectrolytes like chitosan (CH) and alginic acid sodium salt (ALG), the durability of CH/ALG multilayer on cotton were evaluated. The increase of negative charges to the substrate cotton was made with NaBr and TEMPO, to ensure the success of the process of LbL. Three characterization methods to assess electrostatic LbL deposition were performed: the contact angle between a liquid (water) and the sample surface, in order to characterize the wettability of the samples with the different layers of CH and ALG; dyeing of the CH/ALG assembled cotton fabric with cationic methylene blue that shows regular changes in terms of color depth (K/S value), which indicate that the surface were alternately deposited with CH and ALG layers and, finally, the analysis by infrared spectroscopy using Fourier Transform with Attenuated Total Reflection (ATR-FTIR), to assess the changes in the interaction between CH and ALG deposited on cotton samples.
机译：在纺织材料中引入具有生物学特性的分子对于许多生物技术应用而言至关重要。为了测试应用于纺织品的新工艺，在这项研究中，我们提出了关于在天然纤维（如棉）中使用分层聚合（LbL）沉积工艺以及壳聚糖（CH）等天然聚电解质的可行性的第一个结果。 ）和海藻酸钠盐（ALG），评估了CH / ALG多层膜在棉上的耐久性。用NaBr和TEMPO增加底棉的负电荷，以确保LbL工艺成功。进行了三种表征方法来评估静电LbL沉积：液体（水）与样品表面之间的接触角，以表征样品在CH和ALG不同层的润湿性； CH / ALG组装棉织物用阳离子亚甲基蓝染色，在颜色深度（K / S值）方面显示出规律的变化，这表明表面交替沉积有CH和ALG层，最后通过红外分析傅里叶变换与衰减全反射（ATR-FTIR）光谱分析，以评估沉积在棉花样品上的CH和ALG之间相互作用的变化。

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  • 来源
    《Journal of Polymers and the Environment》 |2012年第4期|1084-1094|共11页
  • 作者

    Ana P. Gomes; Joao F. Mano; Joao A. Queiroz; Isabel C. Gouveia;

  • 作者单位

    Optical Centre, University of Beira Interior, 6201-001 Covilha, Portugal;

    @3B's Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, 4806-909 Taipas, Guimaraes, Portugal,ICVS/3B's, PT Government Associate Laboratory, Braga, Guimaraes, Portugal;

    Health Sciences Research Centre, University of Beira Interior, 6201-001 Covilha, Portugal;

    R&D Unit of Textile and Paper Materials, Faculty of Engineering, University of Beira Interior, 6201-001 Covilha, Portugal;

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

    layer-by-layer; contact angle; ATR-FTIR; chitosan; alginate;

    机译：逐层接触角ATR-FTIR;壳聚糖海藻酸盐;

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