基于o-imino-isourea的激素发起剂的开发,能够进行光/热聚合
Eun Jeong Seo1,2, Hyocheol Jung1, Ji-Eun Jeong1
1Research Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology Ulsan 44412 Republic of Korea ypark@krict.re.kr.
RSC advances
|December 15, 2023
概括
三个新的激进发起者被开发出来. 一个启动器显示出良好的光启动,而另一个则显示出快速的热启动,为各种聚合物网络提供潜在的双固化系统.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 有机合成 有机合成
背景情况:
- 激素启动器对于聚合是至关重要的.
- 对于先进的材料,开发具有双光和热响应的发起器是可取的.
- 现有的发起者可能缺乏效率或特定的响应特征.
研究的目的:
- 合成和描述新型的光和热双响应激素发起剂.
- 为了研究结构修改对启动器性能的影响.
- 探索这些启动剂在烯酸盐双固化系统中的潜力.
主要方法:
- 三种基于o-imino isourea的激素启动剂 (dicyheDCC,CyheDCC,BnDCC) 的合成.
- 使用紫外可见光谱学和光差扫描热量计 (光-DSC) 进行表征.
- 使用热DSC和密度函数理论 (DFT) 计算进行热分析.
主要成果:
- BnphDCC显示出高的光启动率和吸收系数 (ε = 15,420 M-1 cm-1).
- 迪奇heDCC显示了快速的热启动,峰值温度 (Tpeak) 为82°C.
- 由于N-O键的灵活性,DFT预测阿里法环的度较低,而不是芳香环.
结论:
- BnphDCC是一个有前途的光启动器,而DicyheDCC是一个有价值的热启动器.
- CyhephDCC和BnphDCC展示了作为光和热触发硬化系统的双响应启动器的潜力.
- 这些发起者提供了开发高效的聚合物网络的可能性,具有协同的热和光效应.
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