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首页> 外文期刊>Materials science & engineering >Bio-based polymer nanofiber with siliceous sponge spicules prepared by electrospinning: Preparation, characterisation, and functionalisation
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Bio-based polymer nanofiber with siliceous sponge spicules prepared by electrospinning: Preparation, characterisation, and functionalisation

机译：通过静电纺丝制备的具有硅质海绵针的生物基聚合物纳米纤维：制备，表征和功能化

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摘要

Sponges, which are parasitic on plants widely found in lakes and oceans, represent a vast resource that has yet to be effectively utilised. Sponge spicules (SS), which contain high amounts of silica dioxide, form after long-term biomineralisation. In this study, SS attached to plant bodies were subjected to acid and heat treatments, followed by grinding, to obtain 10-40-nm siliceous sponge spicules (SSS). SSS and polylactic acid (PLA) were then combined to create 50-450-nm PLA/SSS composite nanofibers. The morphology and bioactivity of the electro-spun PLA/SSS nanofibers were examined; the tensile, thermal, and water-resistant properties of the fibers were also evaluated. Our results showed a dramatic enhancement in the thermal and tensile properties of PLA with increasing SSS content; specifically, a 3 wt% increase in SSS content resulted in a 47 degrees C increase in the initial decomposition temperature and a 73.3-MPa increase in Young's modulus. The water resistance of PLA/SSS increased with SSS content, as indicated by the increase in the water contact angle compared with PLA nanofibers. PLA/SSS nanofibers also exhibited slightly enhanced human foreskin fibroblast cell proliferation, good cytocompatibility, and an antibacterial effect. The enhanced antibacterial and biodegradable properties of PLA/SSS are expected to be useful in biomedical material applications.
机译：海绵是广泛存在于湖泊和海洋中的植物的寄生虫，是一种尚未被有效利用的巨大资源。长期生物矿化后会形成含有大量二氧化硅的海绵状针剂（SS）。在这项研究中，对附着在植物体上的SS进行酸和热处理，然后研磨，以获得10-40 nm的硅质海绵针（SSS）。然后将SSS和聚乳酸（PLA）结合在一起，制成50-450 nm PLA / SSS复合纳米纤维。检查了电纺PLA / SSS纳米纤维的形态和生物活性。还评估了纤维的拉伸，耐热和防水性能。我们的结果表明，随着SSS含量的增加，PLA的热和拉伸性能得到了显着提高。具体而言，SSS含量增加3wt％导致初始分解温度增加47℃和杨氏模量增加73.3-MPa。 PLA / SSS的耐水性随SSS含量的增加而增加，这表明与PLA纳米纤维相比，水接触角的增加。 PLA / SSS纳米纤维还表现出略微增强的人类包皮成纤维细胞增殖能力，良好的细胞相容性和抗菌作用。预期PLA / SSS的增强的抗菌和可生物降解特性可用于生物医学材料应用。

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