تحضير نوعين من نترات السليلوز واطئة المحتوى النتروجيني خاصة بالاستخدامات الطبية

Abstract

Two samples of cellulose nitrate with low nitrogen content Pyroxylin 2 and Colloxylin for medical purposes have been prepared by using tertiary nitrating agent , consists of ( HNO3 , H2SO4 and H2O ) . Weight ratio of cellulose to the nitrating agent was (1:40), (1:50) respectively, with nitration conditions 23 ͦc and 30 min. The Prepared samples were characterized by using elemental analyzer (C.H.N), FTIR technique, and solubility in different solvents and burning of material