通过 in situ 原子转移激进聚合的多壁碳纳米管的受控功能化
Hao Kong1, Chao Gao, Deyue Yan
1College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
Journal of the American Chemical Society
|January 15, 2004
概括
研究人员使用原子转移激素聚合方式将聚甲基酸 (poly) 移植到多壁碳纳米管上. 这种方法可以创建具有可调整的聚合物刷厚度和结构的新型混合纳米材料.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 像甲基甲酸盐 (MMA) 这样的单体可以在表面上移植,以修改材料特性.
- 原子转移基聚合 (ATRP) 是一种控制的聚合技术,适用于制造聚合物刷.
- 多壁碳纳米管 (MWNTs) 具有独特的特性,但在许多应用中需要表面功能化.
研究的目的:
- 在多壁碳纳米管 (MWNTs) 上植入聚甲酸 (PMMA),使用现场ATRP"植入"方法.
- 通过调整单体与启动器比率来控制接种的聚合物层的厚度.
- 扩展该方法,以创建块共聚合物和新的混合核心纳米物体.
主要方法:
- 在现场ATRP"接种"技术.
- 使用 (MWNT-Br) 的MWNT的表面功能化.
- 使用FTIR,1H NMR,SEM,TEM和TGA进行表征.
- 联合聚合以制造块共聚合物 (PMMA-b-PHEMA).
主要成果:
- 在MWNT表面上成功将PMMA接种,形成聚合物刷.
- 通过料比率对聚合物层厚度进行了证明控制.
- 证实了由此产生的混合材料的结构和特性.
- 合成了新的MWNT-核心/PMMA-b-PHEMA-纳米物体.
结论:
- 在现场ATRP"接种"方法对于在MWNT上创建聚合物刷子是有效的.
- 这种方法可以精确控制聚合物层厚度,并创建复杂的架构.
- 开发的技术为设计基于MWNT的先进纳米材料和分子设备提供了一条途径.
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