PAPERmaking! FROM THE PUBLISHERS OF PAPER TECHNOLOGY Volume 2, Number 2, 2016
Silver coated anionic cellulose nanofiber composites for an efficient antimicrobial activity, Mayakrishnan Gopiraman, Abdul Wahab Jatoi, Seki Hiromichi, Kyohei Yamaguchi, Han-Yong Jeon, Ill-Min Chung, Kim Ick Soo, Carbohydrate Polymers , Vol.149. Herein, we report a comparative study of silver coated anionic cellulose nanocomposite before (CMC-Ag) and after (AgNPs/CMC) chemical reduction for antibacterial activity. The nanocomposites were characterised by FE-SEM, FTIR, XPS and SEM-EDS. Antimicrobiality tests were conducted using S. aureus and E. coli bacteria following standard test method JIS L1902, 2008. PAPERMAKING Nanofibrillated cellulose as an additive in papermaking process: A review, Sami Boufi, Israel González, Marc Delgado-Aguilar, Quim Tarrès, M. Àngels Pèlach, Pere Mutjé, Carbohydrate Polymers , Vol.154. During the last two decades, cellulose nanofibres (CNF) have emerged as a promising, sustainable reinforcement with outstanding potential in material sciences. Though application of CNF in papermaking is recent, it is expected to find implementation in the near future to give a broader commercial market to this type of cellulose. The present review highlights recent progress in the field of the application of cellulose nanofibres as additives in papermaking. This review also revises the mechanisms behind CNF reinforcing effect on paper and the effect of chemically modified CNF as additives. POWER & ENERGY Evaluation of pine kraft cellulosic pulps and fines from papermaking as potential feedstocks for biofuel production, Kamila Przybysz Buzała, Piotr Przybysz, Halina Kalinowska, Kazimierz Przybysz, Marta Kucner, Marcin Dubowik, Cellulose , Vol.23, No.1. Results of enzymatic hydrolysis of pine kraft cellulosic pulps (Kappa numbers ranging from 17.2 to 86.2) and waste fines from paper production line suggest that they are potential feedstocks for biofuel production. Enzymatic hydrolysis of the fines from pine wood processing in a paper mill yielded around 75% glucose and 78% total reducing sugars on a dry weight basis that corresponded to around 34% and 36% on a pine wood dry weight basis. PULP Composite films prepared from agricultural by- products, Ivan Šimkovic, Ivan Kelnar, Raniero Mendichi, Tomáš Bertok, Jaroslav Filip, Carbohydrate Polymers , Vol.156. In our study we used holocelluloses from sugar beet and bagasse for film preparation. Results show both types of agricultural by-products could be used for preparation of composite film with high strength and stiffness suitable for broad range of applications. Upgrading old corrugated cardboard (OCC) to dissolving pulp, M. Sarwar Jahan , M. Mostafizur Rahman, Mamon Sarkar, Cellulose , Vol.23, No.3. Delignification and pentosan dissolution of old corrugated cardboard (OCC) pulp was carried out using formic acid (FA) followed by alkaline extraction at atmospheric pressure. The kappa number of the initial OCC pulp was 41.4, which was decreased to 18.0 after FA treatment. The overall pulp yield after FA treatment and alkaline extraction reached 48.0 %. Alkaline- extracted pulp was bleached to 85% brightness using a D0EpD1EpD2 bleaching sequence, w ith α -cellulose content of 94.7%.
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Technical Abstracts
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