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Effect of accelerating potential on the determination of structural parameters of cellulose by electron diffraction technique

机译:Effect of accelerating potential on the determination of structural parameters of cellulose by electron diffraction technique

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AbstractAn accelerating potential of 75 kV combined with very low beam current and exposure time of 5 sec seem ideal for recording electron diffraction pattern of cooled specimens of cellulose microfibrils. Over 16 reflections could be seen distinctly. The structural parameters of ordered regions were: 89 crystallinity index, 72 Å crystallite width, and 209–230 Å crystallite length. Even the diffraction pattern of the uncooled specimen at 75 kV had a large number of reflections and was superior to those recorded on the cooled specimen at 50 or 100

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