In situ nondestructive study interface aging mechanism of polymeric materials/nanocomposites based on dual-beam Raman spectroscopy

Yuan Liu1,2; Xiaoliang Zeng1; Rong Sun1,2; Binbin Zhou1

10.1109/ICEPT59018.2023.10491943

2023-08-11

2836-9734

979-8-3503-3882-9

2023 24th International Conference on Electronic Packaging Technology (ICEPT)

8-11 Aug. 2023

Shihezi City, China

Aging is a key factor affecting the service life of polymer/nanocomposites, and the research on the aging mechanism of the interface (nanoscale transition region) between polymers and nanomaterials is crucial and full of challenges. On the one hand, it is easy to change the original microscopic characteristics of the interface by cutting off the polymer/nanocomposite material to expose the interface. On the other hand, in situ spectroscopy is difficult to achieve nanoscale spatial resolution and is easily interfered with by the signal of the polymer matrix outside the interface. This project aims at these problems, by endowing polymer/nanocomposite materials with surface plasmon properties, using lasers that resonate with nanofiller plasmons to obtain surface-enhanced Raman signals of molecules at the interface (nano-region enhancement); at the same time, another wavelength laser of the dual-beam system is used to collect the intrinsic Raman signal of the polymer matrix outside the interface, so as to realize the precise characterization of the microscopic features of the interface and the effective distinction from the molecules outside the interface. In addition, multi-dimensional data analysis was performed on Raman spectra, and Raman characteristic peaks were used to analyze chemical bond changes, while background fluorescence signals were used to evaluate the excited state of polymers, further revealing the aging mechanism at the polymer/nanocomposite interface. This project can provide new methods and ideas for in situ nondestructive research on the aging mechanism of polymer/nanocomposite.

其他

1.Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Shenzhen, China
2.College of Engineering, Southern University of Science and Technology, Shenzhen, China

Yuan Liu,Xiaoliang Zeng,Rong Sun,et al. In situ nondestructive study interface aging mechanism of polymeric materials/nanocomposites based on dual-beam Raman spectroscopy[C],2023.