Home » Volume 31, 2016 » Issue No. 4
Effects of cellulose micro/nanofibers as paper additives in kraft and kraft-NaBH4 pulps
Ayhan Tozluoğlu and Bayram Poyraz, Duzce University, Duzce, Turkey
This study examined the effects of various CMF/CNFs (microfibrillated and nanofibrillated celluloses) on the relevant properties of paper produced from kraft and kraft-NaBH4 pulps. Subsequent effects of pretreatments on the mechanical, drainage, optical and physical properties of papers obtained from both kraft and kraft-NaBH4 pulps were also studied. Enzymatic pretreatments were accomplished using Celluclast 1.5 L and Pulpzyme HC 2500 enzymes; 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO), phthalimide-N-oxy (PINO) and periodate were utilized in chemical pretreatments. Results showed that the mechanical properties of paper for both kraft and kraft-NaBH4 pulps were improved with the addition of different types of CMF/CNF samples, whereas the sheet drainage was impaired. With 1.5% additions of various CMFs, the kraft pulp and the kraft-NaBH4 pulp displayed increases of 8.32-18.3% and 2.33-8.86% in tensile strength and 6.00-14.0% and 14.0-22.0% in šSR, respectively. Compared to other pretreated CMF/CNFs, periodate oxidized-CMF/CNFs significantly affected the properties of papers obtained from both kraft and kraft-NaBH4 pulps. Results also showed that the addition of various CMF/CNFs had a greater effect on the kraft-NaBH4 pulp than on the kraft pulp.
Enzymes, Nanocellulose, Paper, Periodate, PINO, TEMPO
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Nordic Pulp & Paper Research Journal (NPPRJ) is an international scientific magazine covering science and technology for the areas of wood or bio-mass constituents, pulp and paper and including new fiber-based materials, recovery and by-products from pulping processes, bio-refining and energy issues. Articles meeting required scientific standards are accepted from any continent.
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ISSN: 0283-2631