School of Chemistry, University of Bristol, Bristol, BS8 1TS, UK.
Phys Chem Chem Phys. 2018 Jun 6;20(22):15086-15097. doi: 10.1039/c8cp00760h.
A Dimer Coagulation, Isolation and Coalescence (DCIC) technique is used to probe the phase behaviour and glass transition temperatures of ternary aerosol mixtures. The DCIC technique is used to perform temperature and relative humidity dependent viscosity measurements at viscosities near 5 × 106 Pa s. Measurements include organic-organic and organic-inorganic mixtures composed of sucrose-citric acid and sucrose-sodium nitrate. The data reported here add additional insight into the wide discrepancies in glass transition temperatures reported for pure sodium nitrate. The phase diagram model used in the work of Rothfuss and Petters (Phys. Chem. Chem. Phys., 2017, 19, 6532-6545) is expanded to include multiple solute components. Data and model predictions of the mixtures are in good agreement with the modified model. These measurements are compared with values from Holographic Optical Tweezer (HOT) measurements taken at room temperature. Overall, the viscosities determined from the DCIC and HOT techniques are in good agreement.
采用二聚体凝聚、分离和聚结（DCIC）技术来探测三元气溶胶混合物的相行为和玻璃化转变温度。DCIC 技术用于在粘度接近 5×106 Pa s 时进行温度和相对湿度依赖的粘度测量。测量包括由蔗糖-柠檬酸和蔗糖-硝酸钠组成的有机-有机和有机-无机混合物。这里报告的数据增加了对纯硝酸钠的玻璃化转变温度报告中的广泛差异的深入了解。Rothfuss 和 Petters（Phys. Chem. Chem. Phys.，2017，19，6532-6545）工作中使用的相图模型扩展到包括多个溶质成分。混合物的数据和模型预测与改进后的模型吻合良好。这些测量结果与室温下的全息光镊（HOT）测量值进行了比较。总体而言，从 DCIC 和 HOT 技术确定的粘度值非常吻合。
