کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10561381 | 969771 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Water determination in composite PEO-based polymer electrolytes by volumetric Karl Fischer titration method
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The determination of water in composite poly(ethylene oxide) (PEO)-based polymer electrolytes by volumetric Karl Fischer (KF) titration is described. The measurements have been carried out on specimens (up to 10 g) of polymer electrolytes (as single components, their mixture and thin film) in a dry-room (relative humidity, RH, <0.2% at 20 °C). The use of a dry-room allowed to obtain a baseline drift (defined as the titration rate necessary to keep dry the cell) as low as 0.5 μg H2O minâ1. Working range is 0.001-0.5 wt.% H2O and precision, expressed as relative standard deviation of seven replicates, is 5 at 0.5 wt.% level. Comparison of the gathered results with those obtained by oven methods are provided. Uptake water from surrounding environment can be detected at a level as low as 0.001 wt.%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 67, Issue 4, 15 October 2005, Pages 678-681
Journal: Talanta - Volume 67, Issue 4, 15 October 2005, Pages 678-681
نویسندگان
Silvera Scaccia,