GB/T 27844-2011
ActiveChemicals--Solution/extraction behaviour of polymers in water
化学品 聚合物在水中的溶解／析出特性
Catalogue
前言 → 1 范围 → 2 规范性引用文件 → 3 方法原理 → 4 方法描述 → 5 数据处理和试验报告 Foreword → 1 Scope → 2 Normative References → 3 Principle of Method → 4 Description of Method → 5 Data Processing and Test Report
Scope
This standard specifies the method for determining the dissolution and extraction characteristics of polymers in water. This standard is applicable to the determination of dissolution and extraction characteristics of polymers in water. This standard is not applicable to liquid polymers and polymers that react with water under the test conditions. When the method of this standard is not applicable or available, the dissolution/extraction characteristics shall be studied by other methods. In such cases, detailed information on the method used and the reasons for its use shall be provided.
本标准规定了聚合物在水中的溶解和析出特性的测定方法。本标准适用于测定聚合物在水中的溶解和析出特性。本标准不适用于液体聚合物以及在此试验条件下与水发生反应的聚合物。本标准方法不适用或不可用时，溶解／析出特性应采用其他方法研究。此时，需给出所采用方法的详细情况和使用理由。
Normative References
Keywords
Application Summary AI generated
This standard is used by testing laboratories and researchers in the chemical, plastics, and environmental fields to evaluate the dissolution and extraction behavior of polymers in water. It provides a standardized method to assess polymer stability and potential release of substances in aqueous environments, which is critical for chemical safety management and environmental risk assessment.
该标准主要用于化学、塑料及环保领域的检测机构和研究人员，用于评估聚合物在水环境中的溶解和析出行为。通过标准化的测试方法，可以判断聚合物在水中的稳定性及潜在释放物，对化学品安全管理和环境风险评估具有重要意义。
AI Summary AI generated
This standard specifies a method for determining the dissolution and extraction characteristics of polymers in water, applicable to solid polymers but not to liquid polymers or those reacting with water. The method is based on a modified flask procedure: samples are ground to 0.125-0.25 mm, shaken at 20°C for 24 hours, then centrifuged or filtered, and the polymer concentration in the aqueous phase is analyzed. Direct analysis or indirect TOC measurement can be used. Three replicate tests are performed, and the mean and relative standard deviation are reported. Two different sample-to-water ratios are also provided to assess complete extraction of all extractable components.
本标准规定了聚合物在水中溶解和析出特性的测定方法，适用于固体聚合物，不适用于液体聚合物或与水反应的聚合物。方法基于改进的烧瓶法，通过研磨样品至0.125-0.25 mm，在20℃下振荡24小时，然后离心或过滤，分析水相中聚合物浓度。可选用直接分析或间接测定TOC等方法。试验需进行三次，报告平均值和相对标准偏差。标准还提供了两种不同样品量的试验方案，用于评估所有可析出组分的析出程度。
Key Sentences extracted from text
本标准规定了聚合物在水中的溶解和析出特性的测定方法。
本标准适用于测定聚合物在水中的溶解和析出特性。
本标准不适用于液体聚合物以及在此试验条件下与水发生反应的聚合物。
在水介质中聚合物的溶解／析出特性是利用下述改进的烧瓶法(见GB/T 21845)测定的。
称取3份10 g的待测物质样品，分别放入3个具玻璃塞的容器中，各加入1 000 mL水。
This standard specifies the method for determining the dissolution and extraction characteristics of polymers in water.
This standard is applicable to the determination of dissolution and extraction characteristics of polymers in water.
This standard is not applicable to liquid polymers and polymers that react with water under the test conditions.
The dissolution/extraction characteristics of polymers in aqueous media are determined using the following modified flask method (see GB/T 21845).
Weigh three 10 g samples of the substance to be tested, place them separately into three glass-stoppered containers, and add 1 000 mL of water to each.