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An investigation into Poly (methyl methacrylate) (PMMA) grafted onto nano-SiC particles is reported in this study. In our experiment, the grafting polymerization reaction is induced by radio frequency (RF) discharge of N2 plasma treatment of the nanosized powder. FTIR (Fourier transform infrared spectrum), XPS (X-ray photoelectron spectroscopy) and TGA (Thermogravimetric analysis) results reveal that PMMA is grafted onto the surface of silicon carbide powder, and the crystal structure of the silicon carbide powder observed with XRD (X- ray diffraction) spectra is unchanged before and after the plasma graft polymerization. 相似文献
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聚四氟乙烯低温等离子体表面改性与粘接性能 总被引:5,自引:0,他引:5
利用自行研制的真空低温等离子体设备对聚四氟乙烯(Teflon)薄膜材料进行表面处理,并对等离子体处理后Teflon之间粘接性能作了研究,找到了一些实用的工艺;采用静态接触角、SEM和XPS对等离子体处理前后Teflon的表面接触角、时效性、微观结构及表面成分的改变进行了分析。实验结果显示,其表面接触角随处理时间的变化存在一个最佳值,随着处理时间的进一步增加,其亲水性又开始变差。 相似文献
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NanoHorizons公司目前正在开发与聚合物相容性好的纳米金粉和纳米银粉,其面市价格估计在100-400美元/L, 据说这个价格是其最新竞争产品价格的90%。NanoHorizons公司的业务总监Hayes D.声称,他们公司的产品是专门针对聚合物材料应用设计的。目前该公司已经 相似文献
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用半经验AM1法研究N-甲基-2-(5-甲基,噻吩)-吡咯并[3,4]C_(60)(MTPC)衍生物的分子轨道,电荷分布,几何构型。计算结果显示,分子(C)具有较低的跃迁能。HOMO轨道主要分布在杂环上,LUMO轨道则主要分布在C_(60)上。电荷从富电子的噻吩环向缺电子体C_(60)种转移。预测(C)可能在基态下产生长寿命的电荷分离态。 相似文献
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An investigation of grafting of polymer of styrene (PSt) onto titanium dioxide powder is reported in this paper. The graft polymerization reaction was induced by N2 plasma treatment on the surface of titanium dioxide. Infrared (IR) spectra and X-ray photospectrum (XPS) results showed that PSt was grafted onto the titanium dioxide powder. An observation by X-ray diffraction (XRD) spectra indicated that the crystal structure of the titanium dioxide powder was unchanged after the plasma treatment. 相似文献
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