Copper-based metal organic framework/polymer foams with long-lasting antibacterial effect

IF 2.4 3区 化学 Q3 POLYMER SCIENCE Iranian Polymer Journal Pub Date : 2024-04-12 DOI:10.1007/s13726-024-01314-9
Xiaoyu Mao, Zi Ye, Jiaming Liang, Jiawen Lin, Xinyu Mei, Danfeng Deng, Renjie Shi, Zefeng Wang
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Abstract

The development of durable and effective antibacterial materials has been a research hotspot. Here, we reported a new kind of long-lasting stable antibacterial material [Cu-metal–organic framework (MOF)-embedded polyethylene (PE)/ethylene vinyl acetate copolymer (EVA), namely Cu-MOF-embedded PE/EVA] through extrusion foaming, and its structure was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD) and energy dispersive spectroscopy (EDS). The degree of agglomeration or cluster formation, thermal stability, and melting point temperature of different contents of Cu-MOF/PE/EVA foams were evaluated by scanning electron microscopy (SEM), thermal gravimetric analysis (TGA), and differential scanning calorimetry (DSC), respectively. The results indicated that with the increase of Cu-MOF content, the average size and swelling ratio for foams increased, instead, the density decreased. Besides, the surface gradually showed good hydrophobicity. Remarkably, the water absorption rate was nearly 8 times that of pure PE/EVA when the Cu-MOF content reached 3%. Since Cu-MOF is stably embedded in the foaming structure and well dispersed, it can release Cu2+ at a rate of about 37 ppb/day in foams containing 3% Cu-MOF, which not only maintains the antimicrobial capacity up to 99.2%, but also have no cytotoxicity. Finally, a promising new candidate for medical material with excellent, durable antibacterial ability was proposed.

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具有持久抗菌效果的铜基金属有机框架/聚合物泡沫
开发持久有效的抗菌材料一直是研究热点。本文报道了一种新型长效稳定抗菌材料[Cu-金属有机框架(MOF)包覆聚乙烯(PE)/醋酸乙烯共聚物(EVA),即 Cu-MOF 包覆 PE/EVA]的挤出发泡工艺,并通过傅立叶变换红外光谱(FTIR)、X 射线衍射仪(XRD)和能量色散光谱(EDS)对其结构进行了表征。扫描电子显微镜(SEM)、热重分析(TGA)和差示扫描量热法(DSC)分别评价了不同含量的 Cu-MOF/PE/EVA 泡沫的团聚程度、热稳定性和熔点温度。结果表明,随着 Cu-MOF 含量的增加,泡沫的平均尺寸和膨胀率增大,密度反而减小。此外,表面逐渐显示出良好的疏水性。值得注意的是,当 Cu-MOF 含量达到 3% 时,吸水率几乎是纯 PE/EVA 的 8 倍。由于 Cu-MOF 稳定地嵌入发泡结构中并得到很好的分散,因此在含 3% Cu-MOF 的泡沫中,Cu2+的释放速度约为 37 ppb/天,不仅抗菌能力高达 99.2%,而且没有细胞毒性。最后,我们提出了一种具有卓越、持久抗菌能力的新型医用材料。
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来源期刊
Iranian Polymer Journal
Iranian Polymer Journal 化学-高分子科学
CiteScore
4.90
自引率
9.70%
发文量
107
审稿时长
2.8 months
期刊介绍: Iranian Polymer Journal, a monthly peer-reviewed international journal, provides a continuous forum for the dissemination of the original research and latest advances made in science and technology of polymers, covering diverse areas of polymer synthesis, characterization, polymer physics, rubber, plastics and composites, processing and engineering, biopolymers, drug delivery systems and natural polymers to meet specific applications. Also contributions from nano-related fields are regarded especially important for its versatility in modern scientific development.
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