Tian Saiqi, Chen Yinyan, Zhu Yifan, Fan Haojun
College of Education, Wenzhou University, Wenzhou 325035, China.
National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China.
Polymers (Basel). 2020 Sep 1;12(9):1989. doi: 10.3390/polym12091989.
Rhodamine derivatives (RDs) with three reactive hydrogens were synthesized and well characterized by Fourier transform infra-red spectroscopy (FTIR), H nuclear magnetic resonance (H NMR) and electrospray ionization mass spectra (ESI mass). Then, the obtained RD was covalently cross-linked into polyurethane (PU) matrix through chemical linkages to fabricate a network structure, and the fluorescent properties, mechanical properties, thermal stability, and emulsion particle size were systematically investigated. Results demonstrate that PU-RD maintains initial fluorescent properties and emits desirable yellow fluorescence under ultraviolet irradiation. Moreover, compared with linear PU without fluorescers, PU-RD shows clearly improved mechanical properties and thermal stability, on account of the formed network structures.
合成了具有三个活性氢的罗丹明衍生物（RDs），并通过傅里叶变换红外光谱（FTIR）、氢核磁共振（H NMR）和电喷雾电离质谱（ESI质谱）对其进行了充分表征。然后，通过化学键将所得的RD共价交联到聚氨酯（PU）基体中，以构建网络结构，并系统研究了其荧光性能、力学性能、热稳定性和乳液粒径。结果表明，PU-RD保持了初始荧光性能，在紫外线照射下发出理想的黄色荧光。此外，与不含荧光剂的线性PU相比，由于形成了网络结构，PU-RD的力学性能和热稳定性明显提高。
