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采用非偏振激光为拉曼光源表征了聚丙烯纤维、尼龙6扁丝以及聚乙烯管材等3种取向的聚合物样品。实验表明,当入射光作用于样品的不同面(方向)时,所得到的拉曼光谱存在明显的差异。这一结果为表征聚合物取向开创了新思路,并拓宽了拉曼光谱技术的应用范围。
The unpolarized laser was used to characterize the three oriented polymer samples of polypropylene fiber, nylon 6 flat yarn and polyethylene pipe for Raman light source. Experiments show that when the incident light acts on different faces of the sample (direction), the Raman spectra obtained there is a clear difference. This result opens up new ideas for characterizing polymer orientation and broadens the range of applications of Raman spectroscopy.