Feasibility of the Simultaneous Determination of Monomer Concentrations and Particle Size in Emulsion Polymerization Using in Situ Raman Spectroscopy.
Feasibility of the Simultaneous Determination of Monomer Concentrations and Particle Size in Emulsion Polymerization Using in Situ Raman Spectroscopy.
复制标题
同时使用原位拉曼光谱法确定乳液聚合中单体浓度和粒径的可行性。
DOI：
10.1021/acs.iecr.5b02759
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发表时间：
2015-12-30
影响因子：
4.2
通讯作者：
Lapkin AA
中科院分区：
文献类型：
--
作者：
Houben C;Nurumbetov G;Haddleton D;Lapkin AA
浸没式拉曼探针用于乳液共聚反应中测量单体浓度和颗粒尺寸。定量测定单体浓度是可行的，在两个单体共聚，但只有总转化率可以通过拉曼光谱在四个单体共聚。采用偏最小二乘（PLS）校正模型建立了测量单体转化率和粒径的可行性。基于弹性球振动和表面张力模型，提出了一种基于光子散射的颗粒尺寸测量的简化理论框架。
An immersion Raman probe was used in emulsion copolymerization reactions to measure monomer concentrations and particle sizes. Quantitative determination of monomer concentrations is feasible in two-monomer copolymerizations, but only the overall conversion could be measured by Raman spectroscopy in a four-monomer copolymerization. The feasibility of measuring monomer conversion and particle size was established using partial least-squares (PLS) calibration models. A simplified theoretical framework for the measurement of particle sizes based on photon scattering is presented, based on the elastic-sphere-vibration and surface-tension models.