PAPERmaking! FROM THE PUBLISHERS OF PAPER TECHNOLOGY Volume 5, Number 1, 2019 Regenerated cellulose
from N- methylmorpholine N-oxide solutions as a coating agent for paper materials Marta Krysztof. Konrad Olejnik. Piotr Kulpinski. Anna Stanislawska. Svitlana Khadzhynova. The objective of the presented research was to determine the influence of cellulose coating, obtained from the cellulose solution in N-Methylmorpholine N-oxide (NMMO), on the structural and mechanical properties of paper. The effect of heating time of paper samples coated with cellulose dissolved in NMMO was also investigated. Depending on the heating time of the coating, a continuous or porous layer was obtained. Coating without any heating stage yielded a continuous cellulose layer of hydrophobic properties (higher contact angle in comparison to base paper), and paper of higher smoothness and increased tear resistance. Analysis of the paper samples showed that cellulose coating not only changed the surface properties of paper, but also significantly improved paper strength properties, such as the tensile index, elongation, bursting strength index and double folds number. Despite the process’ limitations (e.g. necessity of removing the NMMO), this method can be considered as a novel approach for paper property modification. Contact information: M. Krysztof, K. Olejnik, A. Stanislawska & S. Khadzhynova, Institute of Papermaking and Printing, Faculty of Management and Production Engineering, Lodz, University of Technology, Wolczanska 223, 90-924 Lodz, Poland e-mail: konrad.olejnik@p.lodz.pl P. Kulpinski, Department of Man-Made Fibers, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland Cellulose (2018) 25:3595 – 3607. https://doi.org/10.1007/s10570-018-1799-y
The Paper Industry Technical Association (PITA) is an independent organisation which operates for the general benefit of its members – both individual and corporate – dedicated to promoting and improving the technical and scientific knowledge of those working in the UK pulp and paper industry. Formed in 1960, it serves the Industry, both manufacturers and suppliers, by providing a forum for members to meet and network; it organises visits, conferences and training seminars that cover all aspects of papermaking science. It also publishes the prestigious journal Paper Technology International and the PITA Annual Review , both sent free to members, and a range of other technical publications which include conference proceedings and the acclaimed Essential Guide to Aqueous Coating .
Article 3 – Novel Coatings
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