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首页> 外文期刊>Journal of Applied Polymer Science >Poly(N-vinylcarbazole)-clay nanocomposite materials prepared by photoinitiated polymerization with triarylsulfonium salt initiator
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Poly(N-vinylcarbazole)-clay nanocomposite materials prepared by photoinitiated polymerization with triarylsulfonium salt initiator

机译：三芳基salt盐引发剂光引发聚合制备的聚（N-乙烯基咔唑）粘土纳米复合材料

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摘要

A series of polymer-clay nanocomposite (PCN) materials that consist of poly(N-vinylcarbazole) (PNVC) and layered montmorillonite (MMT) clay are prepared by effectively dispersing the inorganic nanolayers of MMT in an organic PNVC matrix via in situ photoinitiated polymerization with triarylsulfonium salt as the initiator. Organic NVC monomers are first intercalated into the interlayer regions of the organophilic clay hosts, followed by one-step UV-radiation polymerization. The as-synthesized PCN materials are typically characterized by Fourier transform IR spectroscopy, wide-angle X-ray diffraction, and transmission electron microscopy. The molecular weights of PNVCs extracted from the PCN materials and the bulk PNVC are determined by gel permeation chromatography analysis with tetrahydrofuran as the eluant. The morphological image of the synthesized materials is observed by an optical polarizing microscope. The effects of the material composition on the optical properties and thermal stability of PNVCs and a series of PCN materials (solution and fine powder) are also studied by UV-visible absorption spectra measurements, thermogravimetric analysis, and differential scanning calorimetry, respectively. (C) 2003 Wiley Periodicals, Inc. [References: 25]
机译：通过将MMT的无机纳米层通过原位光引发聚合有效地分散在有机PNVC基质中，制备了一系列由聚（N-乙烯基咔唑）（PNVC）和层状蒙脱土（MMT）粘土组成的聚合物粘土纳米复合材料（PCN）。以三芳基ulf盐为引发剂。首先将有机NVC单体插入亲有机性粘土基质的夹层区域，然后进行一步UV辐射聚合。合成后的PCN材料通常通过傅里叶变换红外光谱，广角X射线衍射和透射电子显微镜表征。通过以四氢呋喃为洗脱液的凝胶渗透色谱分析法确定从PCN材料中提取的PNVC的分子量和大块PNVC。通过光学偏振显微镜观察合成材料的形态图像。还分别通过紫外可见吸收光谱测量，热重分析和差示扫描量热法研究了材料组成对PNVC和一系列PCN材料（溶液和细粉）的光学性能和热稳定性的影响。 （C）2003 Wiley Periodicals，Inc. [参考：25]

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