非吸附性聚合物介导的中空二氧化硅纳米立方体分散体的相稳定性
Phase stability of dispersions of hollow silica nanocubes mediated by non-adsorbing polymers
摘要：
虽然有理论预测[ \textit{Eur.~Phys.~J.~E} \textbf{41}（2018）110]用于与非吸附性聚合物混合的胶体立方体的富相行为，但对这种相行为的彻底验证仍在进行中;关于立方体和非吸附性聚合物的混合物的大量实验研究很少。在本文中，中空二氧化硅纳米立方体和线性聚苯乙烯在\textit{N,-N-}二甲基甲酰胺的混合物被用来测量的胶体立方体的结构因子作为非吸附聚合物浓度的函数。连同视觉观察，这些结构因素使我们能够评估消耗介导的立方聚合物混合物的相稳定性。立方相耗尽剂混合物的理论和实验相边界是在显着的协议，尽管简化的理论。
英文摘要：
Although there are theoretical predictions [\textit{Eur.~Phys.~J.~E} \textbf{41} (2018) 110] for the rich phase behaviour of colloidal cubes mixed with non-adsorbing polymers, a thorough verification of this phase behaviour is still underway; experimental studies on mixtures of cubes and non-adsorbing polymers in bulk are scarce. In this paper, mixtures of hollow silica nanocubes and linear polystyrene in \textit{N,-N-}dimethylformamide are used to measure the structure factor of the colloidal cubes as a function of non-adsorbing polymer concentration. Together with visual observations these structure factors enabled us to assess the depletion-mediated phase stability of cube-polymer mixtures. The theoretical and experimental phase boundaries for cube-depletant mixtures are in remarkable agreement, despite the simplifications underlying the theory employed.
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