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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and rheological characterization of intercalated polystyrene/organophilic montmorillonite nanocomposite
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Preparation and rheological characterization of intercalated polystyrene/organophilic montmorillonite nanocomposite

机译：插层聚苯乙烯/亲有机蒙脱土纳米复合材料的制备及流变学表征

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Polystyrene (PS)/organophilic montmorillonite (OMMT) day nanocomposites were prepared by a solvent casting method using chloroform as a cosolvent. Intercalation of the OMMT in the PS matrix was achieved as revealed by X-ray diffraction. The IR spectra of the products indicated that the OMMT is homogeneously dispersed in the PS matrix. A thermogravimetric analysis (TGA) showed that the onset temperature increases linearly with the clay content. The glass-transition temperature of the PS, examined using differential scanning calorimetry, had a trend similar to that from the TGA. The rheological properties of the PS/OMMIT nanocomposites were also investigated via a rotational rheometer with a parallel plate geometry, and they exhibited sharper shear thinning and increased storage and loss modulus with day content. Furthermore, the shear viscosity obtained from the steady shear experiment was well correlated with the complex viscosity obtained from the oscillatory experiment via the Cox and Merz relation. (C) 2003 Wiley Periodicals, Inc. [References: 60]
机译：聚苯乙烯（PS）/亲有机蒙脱土（OMMT）天纳米复合材料是通过使用氯仿作为助溶剂的溶剂浇铸法制备的。如通过X射线衍射所揭示的，OMMT在PS基质中的插入。产物的IR光谱表明OMMT均匀地分散在PS基质中。热重分析（TGA）表明开始温度随粘土含量线性增加。使用差示扫描量热法检测的PS的玻璃化转变温度具有与TGA相似的趋势。还通过具有平行板几何形状的旋转流变仪研究了PS / OMMIT纳米复合材料的流变性质，它们显示出更尖锐的剪切稀化和增加的储能和损耗模量（按日计算）。此外，通过Cox和Merz关系，从稳态剪切实验获得的剪切粘度与从振荡实验获得的复数粘度具有良好的相关性。 （C）2003 Wiley Periodicals，Inc. [参考：60]

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