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Toward the Description and Prediction of Solvent Induced Variations in Methacrylate Propagation Rate Coefficients on the Basis of Solvatochromic Parameters

机译：基于溶剂变色参数的甲基丙烯酸酯传播速率系数的溶剂诱导变化的描述和预测

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摘要

Benzyl methacrylate (BzMA) propagation rate coefficients, k_p, were determined in ionic liquids and common organic solvents via pulsed-laser polymerizations with subsequent polymer analysis by size-exclusion chromatography (PLP-SEC). The aim of the work is to gain a deeper understanding of the solvent influence on k_p and to develop a general correlation between solvent-induced variations in k_p and solvent properties. Applying a linear solvation energy relationship (LSER), which correlates k_p to solvent solvatochromic parameters, suggests that dipolarity/polarizability determines the solvent influence on k_p. To compare the solvent influence on BzMA k_p with data for methyl methacrylate, hydroxypropyl methacrylate, and 2-ethoxyethyl methacrylate normalized k_p data were treated by a single LSER, providing a universal treatment of the solvent influence on the propagation kinetics of the four monomers. Further, the predictive capabilities of this universal correlation were tested with additional monomers from the methacrylate family.
机译：甲基丙烯酸苄酯（BzMA）的传播速率系数k_p是通过脉冲激光聚合在离子液体和常见有机溶剂中测定的，随后通过尺寸排阻色谱法（PLP-SEC）进行聚合物分析。这项工作的目的是加深对溶剂对k_p的影响的了解，并开发溶剂引起的k_p变化与溶剂性能之间的一般相关性。应用线性溶剂化能量关系（LSER），该关系将k_p与溶剂溶剂化变色参数相关联，表明偶极/极化率决定了溶剂对k_p的影响。为了将溶剂对BzMA k_p的影响与甲基丙烯酸甲酯，甲基丙烯酸羟丙酯和甲基丙烯酸2-乙氧基乙酯的数据进行比较，使用单个LSER处理归一化的k_p数据，为溶剂对四种单体的传播动力学的影响提供了通用处理方法。此外，使用甲基丙烯酸酯族的其他单体测试了这种普遍相关性的预测能力。

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  • 来源
    《Macromolecular reaction engineering》 |2011年第6期|p.232-242|共11页
  • 作者

    Aleksandra Jelicic; Muttaqin Yasin; Sabine Beuermann;

  • 作者单位

    Institute of Chemistry, University of Potsdam, Karl-Liebknecht Str.24-25, 14476 Potsdam, Germany;

    Institute of Chemistry, University of Potsdam, Karl-Liebknecht Str.24-25, 14476 Potsdam, Germany;

    Institute of Chemistry, University of Potsdam, Karl-Liebknecht Str.24-25, 14476 Potsdam, Germany;

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