碳纤维形态对其致癌潜力的影响
Anna Wagner1, Florian Schulz1, Asmus Meyer-Plath2
1Fraunhofer Institute for Toxicology and Experimental Medicine ITEM, Hannover, Germany.
Particle and fibre toxicology
|February 7, 2026
概括
碳纤维碎片和捆绑的多壁碳纳米管 (MWCNTs) 显示出较弱的致癌性. 不捆绑的MWCNT直径小于30纳米在老鼠中没有明显的致癌作用.
科学领域:
- 毒理学 毒理学 毒理学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 基于碳的纤维,包括碳纳米管 (CNTs),正在研究致癌潜力.
- 间皮瘤的发展与多壁碳纳米管 (MWCNT) 的直径有关,更大的直径 (>37 nm) 带来更高的风险.
- 这项研究探讨了直径较小的MWCNTs (10-30nm),单壁碳纳米管 (SWCNTs) 和基于的碳纤维碎片的致癌性.
研究的目的:
- 评估各种碳纤维的致癌性,包括不同类型和大小的CNT和碳纤维碎片.
- 为了确定CNT诱导致癌性的剂量反应关系.
- 为了比较这些材料的致癌作用与阿莫西特石棉.
主要方法:
- 在两剂量内向大鼠注射四个CNT样本 (GMD 30nm,20nm,10nm,<10nm) 和一个碎片化碳纤维样本 (GMD 1.3μm).
- 对大鼠进行长达24个月的观察,以评估间皮瘤的发展.
- 使用阿莫西特石棉作为纤维特异性致癌效应的阳性对照.
主要成果:
- 在所有测试的纤维类型中观察到较低的间皮瘤发病率,因剂量而异.
- 碳纤维碎片和SWCNTs表明在较高剂量时具有较弱的致癌作用.
- 具有30nmGMD的MWCNT显示出非常弱的致癌作用,而具有20nm和10nmGMD的MWCNT没有明显的致癌作用.
结论:
- 基于的碳纤维碎片和捆绑的MWCNTs表现出较弱的致癌作用.
- 在测试剂量下,直径小于30纳米的非捆绑MWCNTs没有显示出明显的致癌作用.
- 纤维直径,捆绑和几何形状似乎影响碳基纳米材料的致癌潜力.
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