An electron-microscopic diffraction technique has been described to record with ease diffraction patterns of cotton cellulose with 3-5 sec exposure time, which is suited to determine the crystallinity of cellulose. The % crystallinity index for cotton and ramie determined by this technique amounted
✦ LIBER ✦
Determination of the crystallinity index of iron polymethacrylate
✍ Scribed by A. Galvan-Sánchez; F. Ureña-Núñez; H. Flores-Llamas; R. López-Castañares
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 200 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
The crystalline fraction of ␥-irradiated semicrystalline iron polymethacrylate was determined by X-ray diffraction analysis. In particular, the changes in the crystallinity index (CI) of the polymer as a function of the received dose (10 -95 kGy) were studied and correlated with the parameters obtained by Mo ¨ssbauer spectroscopy. We also analyzed the thermal degradation of the iron polymethacrylate in a sample with a maximum of crystallinity by employing the thermoanalytical techniques TGA and DSC.
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