分散剂
流变学
材料科学
泥浆
化学工程
分子动力学
粘度
吸附
微观结构
复合材料
有机化学
化学
计算化学
色散(光学)
光学
物理
工程类
作者
Hisao Nakata,Takayoshi Kiguchi,Osamu Hino
摘要
Abstract To understand the role of phosphate ester dispersant, we investigated the rheology of a BaTiO slurry. For the model case, a coarse‐grain molecular dynamics (CGMD) simulation was performed with the butyral polymer didodecyl hydrogen phosphate (DHP) in the toluene/ethanol solvent. By systematically analyzing the effect of DHP from an atomic‐scale first principle and from all‐atom MD to microscale CGMD simulation, we investigated how the adsorption of a DHP dispersant on a BaTiO surface affects the microstructure rheology of a BaTiO slurry. The first‐principle and all‐atom MD simulation suggests that DHP molecules prefer to locate near the BaTiO surface. CGMD simulation shows a reduction in viscosity with an increase in dispersants, suggesting that the dispersant population near the BaTiO surface plays a key role in controlling the rheology of the BaTiO slurry. In this study, we propose an approach for understanding the BaTiO slurry with molecular‐level simulations, which would be a useful tool for efficient optimization of slurry preparation.
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