Bis-acrylate functionalized enone as photoinitiators for UV-LED photopolymerization

IF 5.8 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal Pub Date : 2024-10-28 DOI:10.1016/j.eurpolymj.2024.113506

YinPing Wu , JiaSheng Ke , Junhua Chen , Bo Zhang , He Zhang , Jiayun Zhong , Yunlong Zhang , Hong Huang , Xiang Li , Yue Situ

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Abstract

Ketene derivatives have been widely studied in photopolymerization technology system because of their advantages of excellent light absorption and strong photobleaching ability. Nevertheless, the field of research into photoinitiators derived from ketene that exhibit minimal migration and superior solubility is relatively underexplored. In this study, five new polymerizable ketene derivative photoinitiators (CPBA-1 to 5) were designed and synthesized for photoinitiated radical polymerization (FRP). The photoinitiation performance, migration after curing, and solubility of CPBA1-3 in trimethylpropane triacrylate (TMPTA) free radical polymerization (FRP) were investigated and these properties were compared with the industrial photoinitiator 2-isopropylthioxanthone (ITX). The results showed that CPBA-2 had the best C=C conversion rate in TMPTA. Additionally, the migration rate of CPBA-2 is significantly lower than that of ITX, indicating its lower mobility than conventional photoinitiators. Moreover, the higher solubility of CPBA-2 in monomers provides the great potential for its industrial applications.

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双丙烯酸酯官能化烯酮作为紫外线-LED 光聚合的光引发剂

烯酮衍生物具有优异的光吸收和光漂白能力强的优点，因此在光聚合技术体系中得到了广泛的研究。然而，由酮烯衍生的光引发剂具有迁移性小、溶解性强等优点，但这方面的研究却相对不足。本研究设计并合成了五种新的可聚合烯酮衍生物光引发剂（CPBA-1 至 5），用于光引发自由基聚合（FRP）。研究了 CPBA1-3 的光引发性能、固化后的迁移以及在三甲基丙烷三丙烯酸酯（TMPTA）自由基聚合（FRP）中的溶解度，并将这些性能与工业光引发剂 2-isopropylthioxanthone (ITX) 进行了比较。结果表明，CPBA-2 在 TMPTA 中的 C=C 转化率最高。此外，CPBA-2 的迁移率明显低于 ITX，表明其流动性低于传统光引发剂。此外，CPBA-2 在单体中的溶解度较高，为其工业应用提供了巨大潜力。

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来源期刊

European Polymer Journal 化学-高分子科学

CiteScore

9.90

自引率

10.00%

发文量

691

审稿时长

23 days

期刊介绍： European Polymer Journal is dedicated to publishing work on fundamental and applied polymer chemistry and macromolecular materials. The journal covers all aspects of polymer synthesis, including polymerization mechanisms and chemical functional transformations, with a focus on novel polymers and the relationships between molecular structure and polymer properties. In addition, we welcome submissions on bio-based or renewable polymers, stimuli-responsive systems and polymer bio-hybrids. European Polymer Journal also publishes research on the biomedical application of polymers, including drug delivery and regenerative medicine. The main scope is covered but not limited to the following core research areas: Polymer synthesis and functionalization • Novel synthetic routes for polymerization, functional modification, controlled/living polymerization and precision polymers. Stimuli-responsive polymers • Including shape memory and self-healing polymers. Supramolecular polymers and self-assembly • Molecular recognition and higher order polymer structures. Renewable and sustainable polymers • Bio-based, biodegradable and anti-microbial polymers and polymeric bio-nanocomposites. Polymers at interfaces and surfaces • Chemistry and engineering of surfaces with biological relevance, including patterning, antifouling polymers and polymers for membrane applications. Biomedical applications and nanomedicine • Polymers for regenerative medicine, drug delivery molecular release and gene therapy The scope of European Polymer Journal no longer includes Polymer Physics.