جستجوی مقالات مرتبط با کلیدواژه « imported long fiber » در نشریات گروه « صنایع چوب و کاغذ »

This study and it aim was accomplished on the effect of using cellulose nano-fibers and cationic starch on optical and mechanical properties of chemi-mechanical pulp. For this purpose, first some of bleached CMP pulps were randomly selected from Mazandaran Wood and Paper Industries (MWPI) as control. Then, cellulose nano fibers bought as white gel and used in 0, 2, 3 and 4 % levels. The cationic starch were added in 0, 0.3 and 0.6 % levels and imported long fibers with 0 and 5 % levels to CMP pulps suspensions, too. The hand sheets were prepared from above-mentioned of pulps with 60 gr/m2 basis weight and then the optical and mechanical properties were measured and compared according to TAPPI standard test methods. The results showed that brightness, a* factor, tear, tensile, burst strengths and air resistance were increased and opacity and greenness were decreased. The results showed that all optical and mechanical properties expect greenness and burst strength, improved with 5% addition imported long fiber and 3 and 4 % cellulose nano-fibers. The results showed that using 0.6 % cationic starch with 4 % cellulose nano fibers improved the most paper properties, expect brightness and tensile strength, too.