Gel permeation chromatography (GPC), also known as size exclusion chromatography (SEC), is a type of 2 chromatography used to separate and analyze polymers based on their size. In GPC, a polymer solution is passed through a column packed with porous beads. Smaller polymer molecules can penetrate the pores more easily than larger molecules, leading to separation based on size. GPC is a valuable technique for determining the molecular weight distribution of polymers, which is crucial for understanding their properties and performance.

凝胶渗透色谱法 (GPC)，也称为尺寸排阻色谱法 (SEC)，是一种色谱法，用于根据聚合物的大小进行分离和分析。在 GPC 中，聚合物溶液通过填充有多孔珠的色谱柱。较小的聚合物分子比较大的分子更容易渗透到孔中，从而导致基于尺寸的分离。GPC 是一种确定聚合物分子量分布的有价值的技术，这对于了解它们的性质和性能至关重要。