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首页> 外文期刊>RSC Advances >The photooxidative sensitization of bis(p-substituted diphenyl)iodonium salts in the radical polymerization of acrylates
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The photooxidative sensitization of bis(p-substituted diphenyl)iodonium salts in the radical polymerization of acrylates

机译：丙烯酸酯自由基聚合中双（P-取代的二苯基）碘鎓盐的光氧化致敏

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摘要

The ability of two-component dyeing photoinitiating systems for the radical polymerization of 1,6-hexanediol diacrylate (HDDA) and 2-ethyl-2-(hydroxymethyl)-1,3-propanediol triacrylate (TMPTA) is presented. The systems under study comprised a hemicyanine dye as a sensitizer and iodonium salts that played a role of a coinitiator. The kinetic parameters of the polymerization reaction, such as the rate of polymerization ( R _(p) ) and the degree of conversion of monomer ( C _(%) ), were estimated. The thermodynamic feasibility of an electron transfer process in the systems studied was verified and calculated using the Rehm–Weller equation. It was found that a benzoxazole derivative in the presence of iodonium salts effectively initiated the polymerization of acrylate monomers. The polymerization rates of about 10 ~(?7) s ~(?1) and the degree of conversion of acrylate groups from 20% to 50% were observed. The effects of photoinitiator structures on the initiating ability and spectroscopic properties of sensitizers are described in this article.
机译：提出了双组分染色光引发系统的能力，用于1,6-己二醇二丙烯酸酯（HDDA）和2-乙基-2-（羟甲基）-1,3-丙二醇三丙烯酸酯（TMPTA）的自由基聚合。正在研究的系统包括血红石染料作为敏化剂和碘鎓盐，起因增量剂。估计聚合反应的动力学参数，例如聚合速率（R _（P））和单体的转化程度（C _（％））。使用REHM-oderer方程验证和计算了研究的系统中的电子转移过程的热力学可行性。发现苯并恶唑衍生物在碘鎓盐存在下有效地引发了丙烯酸酯单体的聚合。约10〜（α7）S〜（α1）的聚合速率和丙烯酸酯基团的转化程度为20％至50％。本文描述了光引发剂结构对发起能力和光谱性能的影响。

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