The study of physical properties of the eucalyptus cellulosic pulp produced by the kraft process on wood species

The cellulose Morocco Produces about 125,000 tons / year of bleached eucalyptus pulp chlorine-free (ECF) depending on Kraft process of cooking (soda + sulfide), the oxygen bleaching and chlorine dioxide. The eucalyptus wood are Composed of other macromolecular chains of cellulose origin (these macromoleculars are Formed by the repetition of monomer units of the cyclic glucose type. The junction has its effects by the removal of water) associate fibers which are interconnected to each other by in an amorphous way by hemicellulose and lignin. Our work is to study, on the one hand, the effect of the increasing sulphidity at the level of boil on the physical properties of the bleached pulp, and on the other, the impact of the increased refining time of the unbleached pulp on the same the physical properties. This is done to the two different species of wood namely: The ROSTRATA species which gives more opacity and volume to the pulp. The latter is preferred in industries manufacturing all kinds of paper used for printing, writing or hygiene. The GRANDIS species giving more strength to the pulp is rather used by manufacturers of packaging papers