Synthesis and characterization of multiarm (Benzoin-PS)m-polyDVB star polymer as a polymeric photoinitiator for polymerization of acrylates and methacrylates,Journal of Polymer Science

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Synthesis and characterization of multiarm (Benzoin-PS)m-polyDVB star polymer as a polymeric photoinitiator for polymerization of acrylates and methacrylates
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2021-07-21 , DOI: 10.1002/pol.20210375
Duygu Sevinc Esen ₁ , Nese Cakir Yigit _{2,

3} , Umit Tunca ₂ , Gurkan Hizal ₂ , Nergis Arsu ₁

Affiliation

In this study, a new benzoin-based multi-arm star polymer was synthesized by using ATRP, and characterization was achieved by spectrophotometric and chromatographic methods. Obtained multiarm (Benzoin-PS)_m-polyDVB star polymer was employed as a polymeric photoinitiator for polymerization of methacrylates and acrylates. Photophysical properties of this initiator were determined by fluorescence and phosphorescence measurements, the phosphorescence lifetime was calculated as 29 ms hence the lowest triplet state nature was n-π* character, and laser flash photolysis technique was additionally used to get more information about triplet state and triplet lifetime which was calculated as 1.34 ms. Photokinetics of difunctional acrylate such as HDDA was studied with a multi-arm (Benzoin-PS)_m-polyDVB star polymeric initiator using Photo-DSC.

中文翻译：

多臂 (Benzoin-PS)m-polyDVB 星形聚合物作为聚合光引发剂用于丙烯酸酯和甲基丙烯酸酯聚合的合成和表征

本研究采用ATRP合成了一种新型安息香基多臂星形聚合物，并通过分光光度法和色谱法进行表征。获得的多臂（苯偶姻-PS）_m-聚DVB星形聚合物用作聚合光引发剂用于甲基丙烯酸酯和丙烯酸酯的聚合。该引发剂的光物理性质由荧光和磷光测量确定，磷光寿命计算为 29 ms 因此最低三重态性质为 n-π* 特征，另外使用激光闪光光解技术获得更多关于三重态和三重态寿命计算为 1.34 毫秒。用多臂（苯偶姻-PS）_m研究双官能丙烯酸酯如HDDA的光动力学-polyDVB 星形聚合引发剂，使用 Photo-DSC。

更新日期：2021-09-15

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