一个通用的化学路径到聚氨纳米纤维
Jiaxing Huang1, Richard B Kaner
1Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, California 90095-1569, USA.
Journal of the American Chemical Society
|January 22, 2004
概括
统一的聚氨纳米纤维是通过界面聚合合成的. 酸性选择控制纤维直径,影响表面积,该方法可用于批量生产.
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:
- 聚氨 (PANI) 是一种具有多种应用的导电聚合物.
- 控制PANI纳米结构,特别是纳米纤维直径,对于优化性能至关重要.
- 现有的合成方法通常需要模板或特定的剂.
研究的目的:
- 开发一种无模板的方法来合成均的聚氨纳米纤维.
- 研究不同酸对纳米纤维直径和表面积的影响.
- 为了证明界面聚合技术的可扩展性.
主要方法:
- 素的界面聚合. 素的界面聚合.
- 使用盐酸,酸和硫酸调节纤维直径.
- 使用扫描电子显微镜 (SEM) 和传输电子显微镜 (TEM) 进行表征.
- 用于测量表面积的Brunauer-Emmett-Teller (BET) 分析.
主要成果:
- 统一的聚氨纳米纤维在没有模板或功能补充剂的情况下成功合成.
- 纳米纤维直径可以从30nm (HCl) 到120nm (酸) 调节,使用坎佛硫酸使用50nm.
- 平均纳米纤维直径的减少与BET表面积的增加相关.
- 进一步的表征证实了分子重量,光学特性和电导率.
结论:
- 接口聚合提供了一个多功能和可扩展的路径,以聚氨酸纳米纤维.
- 酸性选择是控制纳米纤维形态和表面特性的一个关键参数.
- 该方法的可扩展性促进了针对各种应用量身定制的聚氨纳米纤维的批量生产.
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