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Superhydrophobic coatings on gelatin-based films: fabrication, characterization and cytotoxicity studies

机译：明胶基薄膜超疏水涂料：制造，表征和细胞毒性研究

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摘要

As a degradable natural biomaterial, gelatin has good biocompatibility and nontoxicity, but gelatin is easily soluble in water which has limited its application. In order to solve this tough defect, superhydrophobic gelatin films (GSF) were prepared by first grafting silica nanoparticles onto gelatin films and then modifying silica nanoparticles with a fluorosilane coupling agent (FAS). Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), a particle size analyzer, a contact angle instrument (CA), X-ray photoelectron spectroscopy (XPS), a universal materials tester and an Incucyte Zoom system were used to characterize the morphology, molecular interactions, superhydrophobic performance, and cytotoxicity. Results show that GSF(300) modified by silica nanoparticles with a particle size of 303 nm has the largest contact angle (158.6 degrees). At the same time, the contact angle is still more than 150 degrees after 48 hours of infiltration in water. These results indicate that GSF(300) has strong long-term water resistance. In addition, GSF(300) has good mechanical strength, durability and nontoxicity. Therefore, such a durable, robust and superhydrophobic film has good potential applications in various functional biomedical aspects.
机译：作为一种可降解的天然生物材料，明胶具有良好的生物相容性和无毒性，但明胶易溶于水的水，这限制了其应用。为了解决这种稳定的缺陷，通过将二氧化硅纳米粒子涂覆到明胶薄膜上，然后用氟硅烷偶联剂（Fas）改性二氧化硅纳米颗粒来制备超疏水性明胶膜（GSF）。傅里叶变换红外光谱（FTIR），扫描电子显微镜（SEM），粒度分析仪，接触角仪（CA），X射线光电子体光谱（XPS），通用材料测试仪和香菇ZOOM系统用于表征形态学，分子相互作用，超疏水性能和细胞毒性。结果表明，由粒径为303nm的二氧化硅纳米粒子改性的GSF（300）具有最大的接触角（158.6度）。同时，在水中浸润48小时后，接触角仍然超过150度。这些结果表明GSF（300）具有强大的长期耐水性。此外，GSF（300）具有良好的机械强度，耐久性和无毒性。因此，这种耐用，稳健和超疏水的薄膜在各种功能生物医学方面具有良好的潜在应用。

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  • 来源
    《RSC Advances》 |2018年第42期|共8页
  • 作者

    Chen Yu; Lu Weipeng; Guo Yanchuan; Zhu Yi; Lu Haojun; Wu Yuxiao;

  • 作者单位

    Chinese Acad Sci Hangzhou Res Inst Tech Inst Phys &

    Chem Hangzhou 310018 Peoples R China;

    Chinese Acad Sci Tech Inst Phys &

    Chem Key Lab Photochem Convers &

    Optoelect Mat Beijing 100190 Peoples R China;

    Chinese Acad Sci Tech Inst Phys &

    Chem Key Lab Photochem Convers &

    Optoelect Mat Beijing 100190 Peoples R China;

    Chinese Acad Sci Hangzhou Res Inst Tech Inst Phys &

    Chem Hangzhou 310018 Peoples R China;

    Chinese Acad Sci Hangzhou Res Inst Tech Inst Phys &

    Chem Hangzhou 310018 Peoples R China;

    Chinese Acad Sci Hangzhou Res Inst Tech Inst Phys &

    Chem Hangzhou 310018 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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