Evaluating the addition of cellulose nano fibers to reinforce of high yield kraft pulp produced from P.deltoides clone 69-55 | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| Article 7, Volume 30, WINTER 4 - Serial Number 53, December 2015, Pages 606-617 PDF (403.78 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijwpr.2015.101477 | ||
| Authors | ||
| Saleh Ghahrmani; Sahab Hejazi* ; Saeid Mahdavi | ||
| Abstract | ||
| In this research, capacity of cellulose nanofibers to reinforce of high yield kraft pulp produced (HYKP) from Populus deltoides clone 69-55 for making unbleached top kraft liner (UTKL) was investigated. The variable conditions of cooking were included the cooking time and temperature each one in two levels. Sulfidity and active alkali were constant in the all cooking and liquid to wood ratio was 4 to 1. Optimum pulp was selected according to the pulp yield and kappa no. to reinforce by cellulose nanofiber. Then, it was refined by PFI mill beater to achieve 385 ml. CSF. The cellulose nanofiber was added in three levels (5, 10 and 15%) to HYKP, then mixed for 5 min. and handsheet made by special wire. The result indicated that 15% adding of cellulose nanofiber to high yield kraft pulp increased tensile index by 39%, burst index by 33%, tear index by 17.7%, bending stiffness index by 38% and ring crush tests (RCT) by 55.47%, respecting to the HYKP. In overall, it is recommended nanofiber adding to HYKP for UTKL making according to the yield and also physical and strength of reinforced pulp. | ||
| Keywords | ||
| cellulose nanofiber; high yield kraft; brown top liner; Deltoids poplar; MECHANICAL PROPERTIES; physical properties | ||
| References | ||
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