Abstract Spin casting of mixtures of nonvolatile polymeric solutes dissolved in volatile solvents is studied experimentally and theoretically. The final solute coverage, time-resolved film thinning, time-resolved solvent evaporation, and evolution of the solute concentration within the thinning film is investigated for various combinations of different polymers (PMMA, PS, PS-b-PMMA) and different solvents (toluene, ethyl-acetate) for a wide range of polymer concentrations and spin cast conditions. The comprehensive data unveil a clear picture of the spin cast process. The findings are translated into a concise theoretical description. Easily available bulk properties of the solvent/solute mixture plus a single “calibration” experiment are sufficient for a quantitative description of the spin cast process including a prediction of the final solute coverage. This and the well-specified boundary conditions render the approach useful for practical applications.

中文翻译：

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通过旋转浇铸沉积聚合物薄膜：定量分析

摘要 通过实验和理论研究了溶解在挥发性溶剂中的非挥发性聚合物溶质混合物的旋转浇铸。研究了不同聚合物（PMMA、PS、PS-b-PMMA）和不同溶剂的各种组合的最终溶质覆盖率、时间分辨薄膜变薄、时间分辨溶剂蒸发和薄膜内溶质浓度的演变。甲苯、乙酸乙酯）适用于各种聚合物浓度和旋转浇铸条件。综合数据揭示了旋转铸造过程的清晰画面。研究结果被转化为简明的理论描述。容易获得的溶剂/溶质混合物的整体特性加上单个“校准”实验足以定量描述旋转浇铸过程，包括预测最终溶质覆盖率。这和明确指定的边界条件使该方法可用于实际应用。