Pulping and Pulp Blending Studies of Gunny Bags, Bagasse and Sesbania aegyptiaca for Writing and Printing Paper

Soda pulping of gunny bags, bagasse and Sesbania aegyptlaca were carried out using 8%, 10% and 16% alkali respectively. Each pulp was bleached using two stage calcium hypochlorite with fresh water wash in between two stages. Pulp evaluation of indivIdual pulp and pulp blended in dlfferent ratio were carried out. It was observed that Sesbania aegyptiaca produces superior pulp than the bagasse at almost same bleached pulp yield with higher pluplng chemical. From the blending studies it was concluded that 20 : 60 : 20 or 20 : 40 : 40 blending ratio for gunny bags: bagasse: Sesbania aegyptiaca; 20 : 80 blending ratio for gunny bags: bagasse and gunny bags: Sesbania aegyptiaca yielded better properties.