标准摘要
[中文适用范围]： 本文件规定了通过矩阵辅助激光解吸/电离时间确定从 2 000 g ⋅ mol−1 到 20 000 g ⋅ mol−1 聚合物的平均分子量和分子量分布的通用方法（参见参考文献[1]） -飞行质谱（MALDI-TOF-MS）。 平均分子量和分子量分布由使用合成聚合物和/或生物聚合物标准品构建的校准曲线计算。 因此，该方法被归类为相对方法。 该方法不适用于聚烯烃或多分散性>1,2 的聚合物。 [外文原描述]： This document specifies a general method for determining the average molecular mass and molecular mass distribution of polymers (see Reference [1]) from 2 000 g ⋅ mol−1 to 20 000 g ⋅ mol−1 by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS). The average molecular masses and molecular mass distributions are calculated from a calibration curve constructed using synthetic-polymer and/or biopolymer standards. This method is therefore classified as a relative method. The method is not applicable to polyolefins or to polymers with a polydispersity >1,2.
英文名称Plastics — Determination of the molecular mass and molecular mass distribution of polymer species by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS)