Effect of different ionic liquids on the dispersion and phase selective wetting of carbon nanotubes in rubber blends
Effect of different ionic liquids on the dispersion and phase selective wetting of carbon nanotubes in rubber blends
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DOI：
10.1016/j.polymer.2016.10.045
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发表时间：
2016-11
期刊：
影响因子：
4.6
通讯作者：
H. H. Le-H.;A. Das;S. Basak;M. Tahir;S. Wiessner;D. Fischer;U. Reuter;K. Stöckelhuber;A. Bhowmick;Q. Do;G. Heinrich;H. Radusch
中科院分区：
文献类型：
--
作者：
H. H. Le-H.;A. Das;S. Basak;M. Tahir;S. Wiessner;D. Fischer;U. Reuter;K. Stöckelhuber;A. Bhowmick;Q. Do;G. Heinrich;H. Radusch
目前的工作包括将液体单体（苯乙烯）原位聚合成熔融聚合物基体（PMMA），作为一种制备精细分散体聚合物共混物的创新方法。这是通过使用名为 RMX® 的原始混合/反应器装置实现的，该装置显着发展了拉伸流动，大大提高了混合效率。通过 TEM 表征所得形态，并通过图像分析获得平均粒径。事实上，在不存在增容剂的情况下，在直径为数十纳米的非常细的分散相形态下观察到高分配效率。通过比较自引发体系（热引发体系）和过氧化物引发体系，发现形态在很大程度上取决于混合过程中聚合速率和单体扩散到聚合物基质中（通过 PMMA 在苯乙烯中的溶解度增强）之间的平衡。最后，对通过反应共混制备的化合物和通过传统熔融混合制备的化合物进行了形态比较。
The present work consisted in thein situpolymerization of a liquid monomer (styrene) into a melt polymer matrix (PMMA) as an innovative method to prepare polymer blends at fine dispersions. That was possible by using an original mixing/reactor device called RMX®, which significantly develops extensional flow, greatly enhancing the mixing efficiency. Resultant morphology was characterized by TEM and average particle sizes were obtained by means of image analysis. A high distributive efficiency was observed at very fine dispersed phase morphology, tens of nanometers in diameter, in fact, in the absence of compatibilizing agents. It was found, by comparing self (thermal) and peroxide-initiated systems, that morphology strongly depends on the balance between polymerization rate and monomer diffusion into the polymer matrix (as enhanced by PMMA solubility into styrene) during mixing. Finally, a comparison of morphology between compounds prepared by reactive blending and those elaborated by conventional melt mixing was done.