摘要
C1s and O1s of the 3,5-bitrifluoromethylated poly（aryl ether） terminated with phenylethynyl moieties（2CF3-PAE-PEP） before/after crosslinking were tested by the X-ray photoeletron spectroscopy（XPS）. The measurements show that some of the C\O bonds in the molecule structure will be broken if the films are crosslinked in the air, which is able to form some new CO bonds with the oxygen in the air. However, the ratios of the groups in the films cured in nitrogen remain the same as that of the uncured samples. It is the the forth harmonic of the stretching vibration of CO bond(4ν<sup>φ<sub>C=O) that causes the absorption loss at the wavelength 1 382 nm.
C_(1s) and O_(1s) of the 3,5-bitrifluoromethylated poly(aryl ether) terminated with phenylethynyl moieties(2CF_3-PAE-PEP) before/after crosslinking were tested by the X-ray photoeletron spectroscopy(XPS). The measurements show that some of the C\_O bonds in the molecule structure will be broken if the films are crosslinked in the air, which is able to form some new CO bonds with the oxygen in the air. However, the ratios of the groups in the films cured in nitrogen remain the same as that of the uncured samples. It is the the forth harmonic of the stretching vibration of CO bond(4ν~~φ__(C=O)) that causes the absorption loss at the wavelength 1 382 nm.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第6期1177-1179,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:50203004)资助.
关键词
含氟聚芳醚
交联
吸收损耗
XPS能谱
Fluorinated poly(aryl ether)
Crosslinking
Absorption loss
XPS spectrum
