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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Tip-Enhanced Raman Spectroscopy Study of Local Interactions at the Interface of Styrene-Butadiene Rubber/Multiwalled Carbon Nanotube Nanocomposites
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Tip-Enhanced Raman Spectroscopy Study of Local Interactions at the Interface of Styrene-Butadiene Rubber/Multiwalled Carbon Nanotube Nanocomposites

机译：苯乙烯-丁二烯橡胶/多壁碳纳米管纳米复合材料界面的局部相互作用的尖端增强拉曼光谱研究

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摘要

Tip-enhanced Raman scattering (TERS) spectral measurements of nanocomposite styrene—butadiene rubber (SBR) and multiwalled carbon nanotubes (MWCNTs) films were used to explore the local molecular interaction between nanocomposites. TERS spectra from geographically separated points were attributable to SBR or MWCNTs, showing great potential for investigating local film inhomogeneity within several tens of nanometers. Such inhomogeneity has never been observed by confocal Raman measurements. TERS bands due to SBR phenyl groups were strong when MWCNT bands were strong, whereas vinyl-group TERS bands were strong when the MWCNT bands were weak. Analysis of the findings suggests that the local distribution of polymer chains is modified with changes in the orientation of the phenyl rings by π—π interactions between the polymer chains and the MWCNTs.
机译：使用尖端增强的拉曼散射（TERS）光谱测量了纳米复合苯乙烯-丁二烯橡胶（SBR）和多壁碳纳米管（MWCNTs）膜，以探索纳米复合物之间的局部分子相互作用。来自地理上分离点的TERS光谱归因于SBR或MWCNT，显示出研究几十纳米范围内局部薄膜不均匀性的巨大潜力。通过共焦拉曼测量从未观察到这种不均匀性。当MWCNT带强时，由SBR苯基引起的TERS带强，而当MWCNT带弱时，乙烯基TERS带强。对发现的分析表明，通过聚合物链与MWCNT之间的π-π相互作用，苯环取向的改变会改变聚合物链的局部分布。

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