Vaysi, R., Salimifar, M. (2017). Investigation of Optical and Mechanical Properties of Bleached Chemi-mechanical Pulps (CMP) with Oxygen, Hydrogen Peroxide and Sodium Dithionite Stages. , 32(3), 311-321. doi: 10.22092/ijwpr.2017.105625.1330
Ramin Vaysi; Mohammad reza Salimifar. "Investigation of Optical and Mechanical Properties of Bleached Chemi-mechanical Pulps (CMP) with Oxygen, Hydrogen Peroxide and Sodium Dithionite Stages". , 32, 3, 2017, 311-321. doi: 10.22092/ijwpr.2017.105625.1330
Vaysi, R., Salimifar, M. (2017). 'Investigation of Optical and Mechanical Properties of Bleached Chemi-mechanical Pulps (CMP) with Oxygen, Hydrogen Peroxide and Sodium Dithionite Stages', , 32(3), pp. 311-321. doi: 10.22092/ijwpr.2017.105625.1330
Vaysi, R., Salimifar, M. Investigation of Optical and Mechanical Properties of Bleached Chemi-mechanical Pulps (CMP) with Oxygen, Hydrogen Peroxide and Sodium Dithionite Stages. , 2017; 32(3): 311-321. doi: 10.22092/ijwpr.2017.105625.1330

Investigation of Optical and Mechanical Properties of Bleached Chemi-mechanical Pulps (CMP) with Oxygen, Hydrogen Peroxide and Sodium Dithionite Stages

تحقیقات علوم چوب و کاغذ ایران
Article 1, Volume 32, Issue 3 - Serial Number 60, September 2017, Pages 311-321    PDF (441.71 K)
Document Type: Research Paper
DOI: 10.22092/ijwpr.2017.105625.1330
Authors
Ramin Vaysi* 1; Mohammad reza Salimifar2
1Associate Prof., Islamic Azad University of Chalous, Iran
2Graduated in Wood and Paper Technology, Islamic Azad University of Chalous, Iran
Abstract
This study and it aim was accomplished on the effect of TCF bleaching on optical and mechanical properties of CMP pulp. For this purpose, some unbleached CMP pulps were randomly selected from Mazandaran Wood and Paper Industries (MWPI). Then these pulps were bleached with two and three OP, OPY, PY and O(Eo)P bleaching stages by using oxygen(O), alkali extraction with hydrogen peroxide(Eo), sodium dithionite(Y) . The hand sheets with 70 gr/m2 were prepared from above-mentioned of pulps, and then the optical and mechanical properties were measured and compared according by using TAPPI Standard test methods. The results showed that brightness, greenness, folds breaking length, tensile and tear strength were increased and opacity and a* factor were decreased. In general, role of three O(Eo)P stages and two OP and PY bleaching stages were better than P stage and unbleached CMP pulp mill in improve of brightness and its paper strength, too.
Keywords
CMP pulp; Bleaching Stage; hydrogen peroxide; Oxygen; TCF Bleaching; Optical and mechanical properties
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