The Synthesis and Characterization of Polyacrolein through Radical Polymerization,Macromolecular Reaction Engineering

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The Synthesis and Characterization of Polyacrolein through Radical Polymerization
Macromolecular Reaction Engineering ( IF 1.8 ) Pub Date : 2020-11-23 , DOI: 10.1002/mren.202000046
Yan Li ₁ , Tao Li ₁ , Jian Tang ₁ , Yun Liu ₁ , Pengmian Huang ₁ , Yue‐Fei Zhang ₁

Affiliation

A radical polymerization reaction of acrolein is reported in this article. The free radical initiator which can effectively promote the free radical polymerization of acrolein is screened out. The optimal conditions of the reaction are investigated and the yield could be up to 93.67%, in which the ratio of initiator to monomer is 1:50, monomer concentration is 7.5 mol L⁻¹, reaction temperature is 50 °C, and the reaction time is 6 h. The structure characterizations of the obtained polymers are performed using hydrogen nuclear magnetic resonance spectroscopy, fouriertransform infrared spectroscopy, and matrix‐assisted laser desorption ionization time of fligh mass spectroscopy. The results show that the structure of the polymer contains fragments generated by decomposition of the initiator, aldehyde groups, and vinyl groups. The reaction mechanism of acrolein polymerization in the presence of free radical initiator is proposed. Thus, a novel method for the preparation of polyacrolein via radical polymerization is provided in this article.

中文翻译：

自由基聚合聚丙烯醛的合成与表征

本文报道了丙烯醛的自由基聚合反应。筛选出可以有效促进丙烯醛自由基聚合的自由基引发剂。研究了反应的最佳条件，收率可达93.67％，其中引发剂与单体的比例为1:50，单体浓度为7.5 mol L ^-1。，反应温度为50℃，反应时间为6小时。使用氢核磁共振光谱，傅立叶变换红外光谱和基质辅助激光解吸电离质谱仪对获得的聚合物进行结构表征。结果表明，聚合物的结构包含由引发剂，醛基和乙烯基分解产生的片段。提出了在自由基引发剂存在下丙烯醛聚合的反应机理。因此，本文提供了一种通过自由基聚合制备聚丙烯醛的新方法。

更新日期：2020-11-23

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