第二代纤维素纳米材料的生命周期风险评估
James D Ede1, Amanda K Charlton-Sevcik2, Julia Griffin1
1Vireo Advisors, LLC, Boston, MA 02205, USA.
Nanomaterials (Basel, Switzerland)
|February 13, 2025
概括
功能化的纤维素纳米材料 (CNs) 在各种应用中显示出低整体风险. 在制造和使用期间的职业吸入带来了最高的暴露风险,可能会引起肺部刺激.
科学领域:
- 纳米材料安全性评估
- 生命周期风险分析
- 纤维素纳米材料纤维素纳米材料
背景情况:
- 第二代功能化纤维素纳米材料 (CNs) 越来越多地用于各种应用.
- 全面了解它们在整个生命周期中的潜在风险至关重要.
研究的目的:
- 对功能化CN进行纳米材料生命周期风险评估 (纳米LCRA).
- 识别和优先考虑职业,健康,消费者和环境风险.
- 评估水过,食品包装和食品添加剂等应用中的风险.
主要方法:
- 为每个产品生命周期阶段开发和排名的暴露场景.
- 使用一个更安全的设计工具箱 (SbD工具箱) 与新的方法方法 (NAMs) 进行危险评估.
- 对具有相似性质的材料进行分组和应用交叉阅读原则.
主要成果:
- 发现与CN启用产品相关的整体风险很低.
- 在制造和应用期间的职业吸入暴露被确定为最高风险场景.
- 在口腔,皮肤和吸入模型中,CNs表现出类似的行为,支持分组和交叉阅读.
结论:
- 功能化的CN通常具有较低的风险,但职业吸入需要注意.
- CNs可能表现为难溶性,低毒性灰尘,可能导致肺部刺激.
- 需要对长期低剂量暴露和含CN复合材料的毒性进行进一步的研究.
更多相关视频
04:55Testing of Nanoparticle Release from a Composite Containing Nanomaterial Using a Chamber System
Published on: November 22, 2016
6.7K
07:25Green and Low-cost Production of Thermally Stable and Carboxylated Cellulose Nanocrystals and Nanofibrils Using Highly Recyclable Dicarboxylic Acids
Published on: January 9, 2017
11.8K
相关概念视频
Microbial Corrosion
Microbiologically Influenced Corrosion (MIC) is a significant form of material degradation caused by the metabolic activities of microorganisms. This phenomenon poses substantial challenges across various industries, including oil and gas, maritime, and water treatment sectors.MIC occurs when microorganisms, such as bacteria, archaea, and fungi, colonize metal surfaces, forming biofilms that alter the local electrochemical environment. These biofilms can lead to the production of corrosive...
Bioplastics
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
Microbial Bioremediation of Plastics
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
