Method for rapidly and quantitatively analyzing structure and composition of polymer chain

The invention provides a method for rapidly and quantitatively analyzing a structure and a composition of a polymer chain. The method comprises the following steps: detecting a deuteration solution ofa polymer to be detected by utilizing a nuclear magnetic resonance spectrometer to obtain a semi-selective HSQC (Heteronuclear Single Quantum Coherence) spectrum; then calculating spectrogram data ofthe semi-selective HSQC spectrum obtained by step 1) to obtain the structure and the composition of the polymer. A semi-selective HSQC pulse sequence for detecting and detected sampling parameters are controlled so that a spectrogram obtained by the method provided by the invention has extremely high quantitative accuracy and extremely good spectrogram repeatability; the detection efficiency canbe improved by about 20 times. 本发明提供了种快速定量分析聚合物链结构及组成的方法，利用核磁共振波谱仪，对待测聚合物的氘代溶液进行检测，得到semi-selective HSQC谱；然后对步骤1)得到的semi-selective HSQC谱的谱图数据进行计算，得到聚合物的结构和组成。其中，通过控制所述检测使用的semi-selective HSQC脉冲序列以及检测的采样参数，使得本发明提供的方法得到的谱图定量准确性极高