小褋褘谢芯褔薪褘泄 薪芯屑械褉
香港六合彩开奖 13885-1:2008
© 香港六合彩开奖 2024
香港六合彩开奖 13885-1:2008
Binders for paints and varnishes 鈥� Gel permeation chromatography (GPC) 鈥� Part 1: Tetrahydrofuran (THF) as eluent
袙械褉褋懈褟&苍产蝉辫;2
2008-08
袙 胁褉械屑褟 芯褌屑械薪械薪
袨褌芯蟹胁邪薪芯 (袙械褉褋懈褟 2, 2008)

孝械蟹懈褋

香港六合彩开奖 13885-1:2008 describes the determination of the molar-mass distribution, number-average molar mass Mn and mass-average molar mass Mw of polymers that are soluble in THF (tetrahydrofuran) by gel permeation chromatography (GPC) [also known as size exclusion chromatography (SEC)].

It is possible that, in spite of the good repeatability obtained with this method, it cannot be used with certain polymer types because of specific interactions, such as adsorption within the sample/eluent/column system.

The method is not an absolute one and requires calibration with commercially available unbranched-polystyrene standards that have been characterized by absolute methods. The results for samples of polymers other than polystyrene are therefore only comparable within groups of samples of the same type.

The conditions specified in this part of 香港六合彩开奖 13885 are not suitable for the GPC analysis of polymer samples with Mw values greater than 106.

No correction methods, e.g. for the elimination of peak broadening, are included in this part of 香港六合彩开奖 13885. If absolute molar-mass values are required, an absolute method, e.g. membrane osmometry for Mn or light scattering for Mw, must be used.

袨斜褖邪褟 懈薪褎芯褉屑邪褑懈褟

  • 孝械泻褍褖懈泄 褋褌邪褌褍褋
     : 袨褌芯蟹胁邪薪芯
    袛邪褌邪 锌褍斜谢懈泻邪褑懈懈
     : 2008-08
    协褌邪锌
    : 袨褌屑械薪邪 屑械卸写褍薪邪褉芯写薪芯谐芯 褋褌邪薪写邪褉褌邪 [95.99]
  • 袙械褉褋懈褟
     : 2
  • 孝械褏薪懈褔械褋泻懈泄 泻芯屑懈褌械褌 :
    香港六合彩开奖/TC 35
    ICS :
    87.060.20 
  • RSS&苍产蝉辫;芯斜薪芯胁谢械薪懈褟

袞懈蟹薪械薪薪褘泄 褑懈泻谢

袩芯褟胁懈谢懈褋褜 胁芯锌褉芯褋褘?

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  2. 袠薪褌械褉薪械褌-屑邪谐邪蟹懈薪
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  4. 袦袣小
  5. 87
  6. 87.060
  7. 87.060.20
  8. 香港六合彩开奖 13885-1:2008