一个单壁碳纳米管-尼龙复合纤维的连续线
Junbo Gao1, Mikhail E Itkis, Aiping Yu
1Center for Nanoscale Science and Engineering, Department of Chemistry, University of California, Riverside, California 92521-0403, USA.
Journal of the American Chemical Society
|March 18, 2005
概括
一种新的方法使单壁碳纳米管 (SWNTs) - 尼龙6 (PA6) 纤维的连续线成为可能. 这一过程改善了复合材料的形态,通过现场聚合和接种增强了纤维强度和热稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 纳米技术纳米技术
背景情况:
- 开发具有增强机械和热性能的先进复合纤维对于各种工业应用至关重要.
- 提高纳米颗粒在聚合物矩阵中的界面兼容性和分散性仍然是一个重大挑战.
研究的目的:
- 开发一种新的化学加工技术,用于连续制单壁碳纳米管 (SWNTs) - 尼龙6 (PA6) 复合纤维.
- 研究在SWNTs的存在下,caprolactam的in-situ聚合,以优化复合体形态和特性.
主要方法:
- 使用碳酸功能化SWNTs (SWNT-COOH) 作为分散剂和接种部位,对caprolactam进行现场聚合.
- 使用红外 (IR) 光谱,热重力测量分析 (TGA) 和原子力显微镜 (AFM) 进行移植共聚合物形成的表征.
- 通过启动度 (6-氨基甲酸) 调节受控的注入聚合物链.
主要成果:
- 卡普罗拉克坦有效分散SWNT-COOH,促进PA6链接接种并形成接种共聚合物.
- 证明了SWNTs的均分散和增强的聚合物/SWNT兼容性和界面相互作用.
- 显著提高了由SWNT增强复合纤维产生的模量,抗拉强度和热稳定性.
结论:
- 开发的现场聚合和接种工艺为生产高性能SWNT-PA6复合纤维提供了一种可行的方法.
- 移植共聚合策略有效地提高了SWNTs在尼龙6矩阵中的集成.
- 这项技术有可能创造出具有卓越机械和热特性的新材料.
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