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首页> 外文期刊>Nanotechnology >Functionalized barbon nanotubes with polystyrene-block-poly (N-isopropylacrylamide) by in situ RAFT polymerization
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Functionalized barbon nanotubes with polystyrene-block-poly (N-isopropylacrylamide) by in situ RAFT polymerization

机译：原位RAFT聚合与聚苯乙烯嵌段聚（N-异丙基丙烯酰胺）的功能化碳纳米管

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摘要

A fascinating nano-object, amphiphilic polymer brushes with a hard core of multiwalled carbon nanotubes (MWNTs) and a relatively soft shell of polystyrene-block-poly (,N-isopropylacrylamide) (PS-b-PNIPAM), was easily constructed by in situ surface reversible addition-fragmentation chain transfer (RAFT) polymerization of styrene followed by N-isopropylacrylamide on the modified convex surfaces of MWNTs (MWNT-PS). The structure and morphology of the as-prepared hybrid nanomaterials were characterized and confirmed by Fourier-transform infrared (FTIR) spectrometry, nuclear magnetic resonance (NMR) spectrometry, thermogravimetric analysis (TGA) and Raman spectroscopic analysis. The MWNT-PS-b-PNIPAM that was produced has a PNIPAM block, which is very sensitive to temperature. Such a complex nano-object could open a door to the fabrication of novel functional carbon nanotube-based nanomaterials or nanodevices with designable structures and tailor-made properties.
机译：通过以下方法轻松构造了一个迷人的，具有多壁碳纳米管（MWNT）硬核和相对柔软的聚苯乙烯嵌段聚（，N-异丙基丙烯酰胺）（PS-b-PNIPAM）壳的纳米级两亲聚合物刷。苯乙烯的原位表面可逆加成-断裂链转移（RAFT）聚合，然后在MWNT（MWNT-PS）的改性凸面上进行N-异丙基丙烯酰胺聚合。通过傅立叶变换红外（FTIR）光谱，核磁共振（NMR）光谱，热重分析（TGA）和拉曼光谱分析对所制备的杂化纳米材料的结构和形态进行表征和确认。所生产的MWNT-PS-b-PNIPAM具有一个PNIPAM块，该块对温度非常敏感。这种复杂的纳米物体可以为新型的具有功能性碳纳米管的纳米材料或具有可设计的结构和量身定制的性能的纳米器件的制造敞开大门。

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