Crystallinity and Ultrastructure of Ammoniated Wood: Part 1. X-Ray Crystallinity
AbstractCrystallite width and degree of crystallinity were determined on loblolly pine wood before and after treatment with gaseous anhydrous ammonia at room temperature. Crystallinity increased in both normal and compression wood, but no detectable change in crystallite width resulted from ammoniation. The increase in crystallinity was probably apparent and due to a cell-wall consolidation—a shrinkage of microvoid space and/or amorphous material between crystallites. However, other factors that might contribute to an actual increase in crystallinity are discussed.
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