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首页> 外文期刊>Journal of Applied Polymer Science >Dynamics of migration and phase selective localization of nanoclay in HNBR/ENR blends
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Dynamics of migration and phase selective localization of nanoclay in HNBR/ENR blends

机译：HNBR / ENR共混物中纳米粘土的迁移和相选择局部化动力学

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摘要

The phase specific selective localization and dynamics of migration of nanoclay in hydrogenated acrylonitrile butadiene rubber (HNBR)/epoxidized natural rubber (ENR) blend systems is investigated. The phase specific dispersion of clay particles is monitored through measuring the online measured electrical conductance (OMEC) during mixing by means of a sensor system installed inside the chamber of an internal mixer. The results of different characterization techniques, such as atomic force microscopy, transmission electron microscopy, and small angle X-ray scattering have been used to understand and interpret the OMEC behaviors of nanoclay-filled rubber compounds individually (HNBR and ENR) and their blend systems. The observed online conductance is ionic in nature that arises due to the release of surfactant molecules from the clay galleries. It is observed that the OMEC behavior depends mainly on two factors: the localization of nanoclay in specific phase of the blend system and on the gradual development of blend morphology. The OMEC behavior and the supported data from the microscopic methods, clearly reveal the migration of organoclay from the ENR to HNBR phase during the mixing process, particularly localizing near the interface of the blend. Further, the localization of organoclay is also evaluated by applying the surface tension measurements based model, which also predicts the favorable localization of organoclay in HNBR phase of the blend. The work clearly suggests the OMEC method to be a powerful online tool to monitor and control the nanoclay dispersion and localization in rubber based nanocomposites during the melt mixing process. (C) 2016 Wiley Periodicals, Inc.
机译：研究了纳米粘土在氢化丙烯腈-丁二烯橡胶（HNBR）/环氧化天然橡胶（ENR）共混体系中的相特异性选择定位和迁移动力学。通过安装在内部混合器室内的传感器系统，通过测量在线测量的电导率（OMEC），可以监测粘土颗粒的相比分散性。不同表征技术（例如原子力显微镜，透射电子显微镜和小角度X射线散射）的结果已用于分别理解和解释纳米粘土填充的橡胶化合物（HNBR和ENR）及其共混体系的OMEC行为。 。观察到的在线电导本质上是离子性的，这是由于表面活性剂分子从粘土画廊释放而产生的。观察到OMEC行为主要取决于两个因素：纳米粘土在共混体系特定相中的定位以及共混物形态的逐步发展。 OMEC行为和微观方法支持的数据清楚地揭示了混合过程中有机粘土从ENR到HNBR相的迁移，特别是在共混物的界面附近。此外，还可以通过应用基于表面张力测量的模型来评估有机粘土的定位，该模型还预测了共混物的HNBR相中有机粘土的有利定位。这项工作清楚地表明，OMEC方法是监测和控制熔融混合过程中橡胶基纳米复合材料中纳米粘土分散和定位的强大在线工具。 （C）2016威利期刊公司

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