GSO ISO 13885-2:2022

Gel permeation chromatography (GPC) — Part 2: N,N-Dimenthylacetamide (DMAC) as eluent

GSO ISO 13885-2:2022 发布历史

GSO ISO 13885-2:2022由GSO 发布于 2022-05-12。

GSO ISO 13885-2:2022在国际标准分类中归属于: 87.060.20 涂料粘合剂。

GSO ISO 13885-2:2022 的最新版本是哪一版？

最新版本是 GSO ISO 13885-2:2022 。

GSO ISO 13885-2:2022的历代版本如下：

• 2022年 GSO ISO 13885-2:2022

This document specifies the determination of the molar-mass distribution and the average molar mass values Mn (number average) and Mw (weight average) of polymers that are soluble in DMAC (N,N-Dimethylacetamide) by gel permeation chromatography (GPC). NOTE Also known as size exclusion chromatography (SEC). Even though the chromatograms obtained show good repeatability, it is possible that this method cannot be used with certain polymer types because of specific interactions (e.g. adsorption) within the sample/eluent/column system. The conditions specified in this document are not applicable to the GPC analysis of polymer samples with Mw values greater than 106 g/mol and/or polymers with elution limits outside the calibration range (see 7.6 and Annex C). This document includes no correction method (e.g. for the elimination of peak broadening). If absolute molar mass values are required, an absolute method (e.g. membrane osmometry for Mn or light scattering for Mw) can be used.

标准号

GSO ISO 13885-2:2022

发布

2022年

发布单位

GSO

当前最新

GSO ISO 13885-2:2022

 

 

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