Raman spectroscopic study of gamma radiation-initiated polymerization of diethylene glycol dimethacrylate in different solvents,Journal of Raman Spectroscopy

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Raman spectroscopic study of gamma radiation-initiated polymerization of diethylene glycol dimethacrylate in different solvents
Journal of Raman Spectroscopy ( IF 2.4 ) Pub Date : 2021-07-19 , DOI: 10.1002/jrs.6207
Malik H. Mahmood _{1,

2,

3} , László Himics ₁ , Tamás Váczi ₁ , István Rigó ₁ , Roman Holomb _{1,

4} , Barbara Beiler ₅ , Miklós Veres ₁

Affiliation

In this work, the degree of conversion and polymerization kinetics of diethylene glycol dimethacrylate (DEGDMA) monomer in different solvents upon gamma irradiation with different doses have been studied by Raman spectroscopy and mass difference measurements. Density functional theory calculations were performed on the monomer and the crosslinked structure to obtain the assignment of Raman peaks to specific bonds. The evolution of the bonding configuration of the structure with dose and the composition of the monomer mixture was investigated. The dependence of the polymerization rate on the solvent type was explained by the mechanism of the polymerization affected by the relative solubility of the components of the monomer mixture. Raman measurements revealed also that there are not fully crosslinked monomer molecules in the polymer matrix.

中文翻译：

不同溶剂中二甘醇二甲基丙烯酸酯的伽马辐射引发聚合的拉曼光谱研究

在这项工作中，通过拉曼光谱和质量差测量研究了二甘醇二甲基丙烯酸酯 (DEGDMA) 单体在不同剂量的伽马辐射下在不同溶剂中的转化程度和聚合动力学。对单体和交联结构进行密度泛函理论计算，以获得特定键的拉曼峰分配。研究了结构的键合构型随剂量和单体混合物组成的演变。聚合速率对溶剂类型的依赖性通过单体混合物组分的相对溶解度影响聚合的机理来解释。拉曼测量还表明聚合物基质中没有完全交联的单体分子。

更新日期：2021-07-19

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