Abstract
Some methods for the preparation of cellulose microfibrils and polymer composites with such microfibrils are presented in this paper. Morphological aspects of microfibrils and their dispersion in the polymer matrix are characterized using SEM and optical microscopy. Cellulose microfibrils show a clear reinforcing effect of the polymer matrix as pointed out by mechanical characterization. Keywords: polymer composites, cellulose microfibrils, mechanical properties