本发明公开了一种初生态超高分子量聚乙烯的表征方法。所述方法为：S1.样品前处理；S2.显微拉曼平面成像；S3.偏振拉曼平面成像；S4.变温拉曼光谱；S5.数据分析：然后将步骤S2、S3或S4采集到的数据，运用Lorentz函数拉曼峰拟合，然后将图谱转换成为峰面积，并采用公式进行计算处理，即可获得初生态UHMWPE的结晶度分布图；其中，α_C为结晶度；I₁₄₁₆为1416cm^-1的峰面积；I_1295+1305为1295cm^-1与1305cm^-1的峰面积之和。本发明所述表征方法不仅可获得初生态UHMWPE的微观形貌以其对应的空间结构信息，而且可以在不破坏UHMWPE的微区结构的基础上，获得在温度作用下初生态UHMWPE对应区域的结构与形貌变化过程，从而有效建立其微观形貌变化与结构变化的关联关系，可用于指导UHMWPE的合成、加工和应用。

The invention discloses a characterization method of nascent ultrahigh molecular weight polyethylene. The method comprises the steps of (S1) sample pretreatment; (S2) micro-Raman planar imaging; (S3)polarized Raman planar imaging; (4) variable-temperature Raman spectroscopy; and (5) data analysis: carrying out Raman peak fitting on data collected in the step (S2), (S3) or (S4) by using a Lorentzfunction, converting a map into peak area and carrying out computing processing by adopting a formula , thereby obtaining a crystallinity distribution map of the nascent UHMWPE (ultrahigh molecularweight polyethylene), wherein alphac is crystallinity, I₁₄₁₆ is peak area of 1416cm^-1, and I_1295+1305 is the sum of the peak area of 1295cm^-1 and 1305cm^-1. According to the characterization method disclosed by the invention, a micro-morphology of the nascent UHMWPE and corresponding space structure information can be obtained, and structure and morphology change processes of a correspondingarea of the nascent UHMWPE under the temperature effect can be obtained on the basis of not destroying a micro-area structure of the UHMWPE, thereby effectively establishing an association relationship between the micro-morphology change and the structure change of the nascent UHMWPE; and the characterization method can be used for guiding synthesis, processing and application of the UHMWPE.