†Department of Materials Science and Engineering, Korea University, Seoul 136-701, Korea.
‡Materials Architecting Research Center, Korea Institute of Science Technology, 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Korea.
ACS Appl Mater Interfaces. 2015 May 13;7(18):9841-50. doi: 10.1021/acsami.5b01849. Epub 2015 Apr 28.
The design of amphiphilic polymer compatibilizers for solubility manipulation of CNT composites was systematically generalized in this study. Structurally tailored multiamphiphilic compatibilizer were designed and synthesized by applying simple, high-yield reactions. This multiamphiphilic compatibilizer was applied for noncovalent functionalization of CNTs as well as provided CNTs with outstanding dispersion stability, manipulation of solubility, and hybridization with Ag nanoparticles (NPs). With regard to the dispersion properties, superior records in maximum concentration (2.88-3.10 mg/mL in chloroform), and mass ratio of the compatibilizer for good CNT dispersion (36 wt %) were achieved by MWCNTs functionalized with a multiamphiphilic block copolymer compatibilizer. In particular, the solubility limitations of MWCNT dispersion in solvents ranging from toluene (nonpolar) to aqueous solution (polar) are surprisingly resolved by introducing this multiamphiphilic polymer compatibilizer. Furthermore, this polymer compatibilizer allowed the synthesis of the hybrid CNT nanocomposites with Ag nanoparticles by an in situ nucleation process. As such, the multiamphiphilic compatibilizer candidate as a new concept for the noncovalent functionalization of CNTs can extend their use for a wide range of applications.
本研究系统地概括了用于调控 CNT 复合材料溶解度的两亲性聚合物增容剂的设计。通过应用简单、高产率的反应，设计并合成了结构精细的多两亲性增容剂。该多两亲性增容剂不仅可用于 CNT 的非共价功能化，还可提供 CNT 出色的分散稳定性、溶解度调控以及与 Ag 纳米粒子（NPs）的杂化。在分散性能方面，通过多两亲嵌段共聚物增容剂对 MWCNTs 进行功能化，实现了最高浓度（氯仿中为 2.88-3.10mg/mL）和良好 CNT 分散所需的增容剂质量比（36wt%）的卓越记录。特别地，通过引入这种多两亲聚合物增容剂，出乎意料地解决了 MWCNT 分散在从甲苯（非极性）到水溶液（极性）的溶剂中的溶解度限制问题。此外，该聚合物增容剂允许通过原位成核过程合成具有 Ag 纳米粒子的混合 CNT 纳米复合材料。因此，这种多两亲性相容剂作为 CNT 非共价功能化的新概念，可以扩展其在广泛应用中的使用。
