Molecular weight and molecular weight distribution are the most important and basic parameters that affect the processing and service properties of polymer materials. Therefore
Characterization of molecular weight and molecular weight distribution of polymer materials are the key to the analysis of their properties
and gel permeation chromatography is the most effective tool for the determination of molecular weight and molecular weight distribution of polymers. In this paper
the separation mechanism and molecular weight calibration of gel permeation chromatography are introduced. The application of gel permeation chromatography in characterization of polymer materials in recent years are reviewed
including the composition of copolymer
the degree of branched polymer
the low molecular content of polymer and the degradation of polymer. The future trend of gel permeation chromatography is also prospected.
关键词
凝胶渗透色谱分子量分子量分布应用
Keywords
Gel permeation chromatographyMolecular weightMolecular weight distributionApplication