GB/T 27843-2011
ActiveChemicals—Determination of the low molecular weight content of a polymer using Gel permeation chromatography (GPC)
化学品 聚合物低分子量组分含量测定 凝胶渗透色谱法(GPC)
Catalogue
前言 → 引言 → 1 范围 → 2 规范性引用文件 → 3 术语和定义 → 4 参照物质 → 5 方法原理 → 6 质量标准 → 7 方法描述 → 8 仪器 → 9 数据和报告 → 附录A Foreword → Introduction → 1 Scope → 2 Normative References → 3 Terms and Definitions → 4 Reference Substances → 5 Principle of the Method → 6 Quality Criteria → 7 Description of the Method → 8 Apparatus → 9 Data and Report → Annex A
Scope
This standard specifies the method for the determination of the low molecular weight content of a polymer using gel permeation chromatography (GPC). This standard is applicable to the determination of the low molecular weight content of polymers. Due to the diverse nature of polymer materials and the different low molecular weight substances they contain, some polymers with special complex structures are not suitable for the determination of low molecular weight content by gel permeation chromatography; other methods may be used, and the appropriate instrument shall be selected based on detailed information about the polymer material.
本标准规定了使用凝胶渗透色谱法(gel permeation chromatography，GPC)测定聚合物低分子量组分含量的方法。本标准适用于测定聚合物低分子量组分的含量。由于聚合物材料性质多样，所含低分子量物质也不同，一些聚合物因具有特殊复杂结构而不适于使用凝胶色谱法来测定低分子量含量，可以采用其他方法测定，测定时根据聚合物材料的详细资料，选择相应的仪器测定。
Normative References
Keywords
Application Summary AI generated
Testing laboratories and R&D institutions in the chemical, materials, and polymer industries use this standard to accurately determine the low molecular weight content in polymers via gel permeation chromatography. It provides a unified technical basis for polymer quality control, product compliance assessment, and environmental and health risk evaluation. This standard is critical for ensuring that low molecular weight substances (e.g., residual monomers, additives) in polymer products remain within safe limits, supporting standardized testing in chemical manufacturing and international trade.
化学、材料及聚合物行业的检测实验室和研发机构使用该标准，通过凝胶渗透色谱法准确测定聚合物中低分子量组分的含量。该标准为聚合物质量控制、产品合规性评估以及环境与健康风险评价提供了统一的技术依据。它帮助确保聚合物产品中低分子量物质（如残留单体、添加剂）的含量在安全范围内，对化工生产和进出口贸易中的标准化检测至关重要。
AI Summary AI generated
GB/T 27843-2011 specifies a method for determining the low molecular weight content of polymers using gel permeation chromatography (GPC). It is applicable to a wide range of polymers but notes that those with complex structures may not be suitable. The method relies on GPC separation principles and uses narrow-distribution polystyrene standards for calibration to obtain relative molecular weights. The standard details sample preparation, apparatus requirements, chromatographic conditions, data acquisition and processing, and calculation of low molecular weight content. It also includes guidance for correcting insoluble polymer fractions. This standard provides a unified technical specification for polymer quality control.
GB/T 27843-2011规定了使用凝胶渗透色谱法（GPC）测定聚合物中低分子量组分含量的方法。标准适用于多种聚合物，但指出复杂结构聚合物可能不适用。方法基于GPC分离原理，使用窄分布聚苯乙烯标准品进行校正，得到相对分子量。标准详细描述了样品配制、仪器要求、色谱条件、数据采集与处理，以及低分子量含量的计算。还包含对不溶性聚合物的校正指南。该标准为聚合物质量控制提供了统一的技术规范。
Key Sentences extracted from text
本标准规定了使用凝胶渗透色谱法(gel permeation chromatography，GPC)测定聚合物低分子量组分含量的方法。
GPC可以测定聚合物的数均分子量Mn、重均分子量Mw和分子量分布。
低分子量组分从曲线中得出，如果低分子量组分的组成、结构与聚合物完全一样，则可精确地计算出低分子量组分含量。
洗脱体积的重复性(相对标准偏差RSD)应小于0.3%。
色谱柱系统的R值应大于1.7。
This standard specifies the method for the determination of the low molecular weight content of a polymer using gel permeation chromatography (GPC).
GPC can determine the number-average molecular weight Mn, weight-average molecular weight Mw, and molecular weight distribution of polymers.
The low molecular weight component is derived from the curve; if the composition and structure of the low molecular weight component are exactly the same as the polymer, the low molecular weight content can be accurately calculated.
The repeatability of the elution volume (relative standard deviation RSD) shall be less than 0.3%.
The R value of the column system shall be greater than 1.7.