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首页> 外文期刊>Applied Surface Science >Homogeneity and penetration depth of atmospheric pressure plasma polymerization onto electrospun nanofibrous mats
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Homogeneity and penetration depth of atmospheric pressure plasma polymerization onto electrospun nanofibrous mats

机译：大气压等离子体聚合在电纺纳米纤维垫上的均质性和渗透深度

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摘要

This work investigates for the first time the penetration depth, nanoscopic homogeneity and conformality of the plasma polymerization onto an electrospun nanofibrous mat. The study is carried out on the model example of atmospheric pressure plasma co-polymerization of anhydride-rich films onto polycaprolactone mats that can find a significant practical applications, for example in tissue engineering and regenerative medicine. Since the surface-to-volume ratio of nanofibrous mats is enormous and the structure of mats resembles extracellular matrix the successful plasma coating of each whole fiber and understanding the penetration of the polymerization into the mat structure are extremely important. The films with reactive anhydride groups were prepared by co-polymerization of maleic anhydride and acetylene using dielectric barrier discharge. The studies were accompanied by the quantification of anhydride groups directly on the PCL electrospun mat using the chemical derivatization with trifluoroethylamine and X-ray photoelectron spectroscopy. The nanoscopic homogeneity and conformality of the anhydride plasma polymer coating on the front side and backside of the nanofibrous mat, 30-40 mu m in thickness, did not differ according to the dynamic SIMS mapping. The films containing approximately 6 anhydride groups per 100 carbon atoms coated homogeneously the nanofibers deeper in the PCL mat. The characteristic penetration depth of the deposition was estimated as 46 +/- 5 mu m.
机译：这项工作首次研究了等离子体聚合在静电纺纳米纤维垫上的渗透深度，纳米均匀性和共形性。该研究是在将富含酸酐的薄膜在聚己内酯垫上进行大气压等离子体共聚的模型实例上进行的，该模型可以找到重要的实际应用，例如在组织工程和再生医学中。由于纳米纤维垫的表面积与体积之比很大，并且垫的结构类似于细胞外基质，因此成功地对每条全纤维进行等离子涂层以及了解聚合反应对垫结构的渗透极为重要。通过使用介电势垒放电使马来酸酐和乙炔共聚来制备具有反应性酸酐基团的膜。这些研究伴随着使用三氟乙胺的化学衍生化和X射线光电子能谱直接在PCL电纺垫上定量酸酐基团。根据动态SIMS图谱，在纳米纤维垫的正面和背面上的酸酐等离子体聚合物涂层的纳米均匀性和共形性，厚度为30-40μm，没有变化。每100个碳原子包含约6个酸酐基团的薄膜将纳米纤维均匀地包覆在PCL垫的深处。沉积的特征渗透深度估计为46 +/- 5微米。

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  • 来源
    《Applied Surface Science》 |2019年第31期|835-841|共7页
  • 作者

    Michlicek Miroslav; Manakhova Anton; Dvorakova Eva; Zajickova Lenka;

  • 作者单位

    Masaryk Univ, Plasma Technol, Cent European Inst Technol CEITEC, Kamenice 5, Brno 62500, Czech Republic|Masaryk Univ, Fac Sci, Dept Phys Elect, Kotlarska 2, CS-61137 Brno, Czech Republic;

    Masaryk Univ, Plasma Technol, Cent European Inst Technol CEITEC, Kamenice 5, Brno 62500, Czech Republic|Natl Univ Sci & Technol MISiS, Leninsky Pr 4, Moscow 119049, Russia;

    Masaryk Univ, Plasma Technol, Cent European Inst Technol CEITEC, Kamenice 5, Brno 62500, Czech Republic;

    Masaryk Univ, Plasma Technol, Cent European Inst Technol CEITEC, Kamenice 5, Brno 62500, Czech Republic|Masaryk Univ, Fac Sci, Dept Phys Elect, Kotlarska 2, CS-61137 Brno, Czech Republic;

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  • 正文语种 eng
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  • 关键词

    Plasma polymers; Discharges; Carboxyl groups; Electrospun nanofibers; Penetration depth; Thin film characterization;

    机译：等离子体聚合物;放电;羧基;电纺纳米纤维;渗透深度;薄膜表征;

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