TY - JOUR
T1 - Microfibrillated Cellulose Based Barrier Coatings for Abrasive Paper Products
AU - Kumar, Vinay
AU - Kenttä, Eija
AU - Andersson, Petter
AU - Forsström, Ulla
N1 - Funding Information:
Funding: This research was funded by the European Union’s Horizon 2020 research and innovation program
Funding Information:
This research was funded by the European Union?s Horizon 2020 research and innovation program under grant agreement No. 760601. under grant agreement No. 760601. This work was performed in the NanoTextSurf project. Acknowledgments: This work was performed in the NanoTextSurf project.
Funding Information:
under grant agreement No. 760601. Acknowledgments: This work was performed in the NanoTextSurf project. Acknowledgments: This work was performed in the NanoTextSurf project. Conflicts of Interest: The authors declare no conflict of interest. The funders had no role in the design of the Conflicts of Interest: The authors declare no conflict of interest. The funders had no role in the design of the sptuubdlyis;hint htheerecsoullletsc.tion, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results. References References 1. Cohen, M.A.; Kronzer, F.J. Substrate for Supporting Abrasive Grit Adhesives, Method for Forming Same and 1. CAobhraensi,vMeM.Aa.;teKrriaoln.zEeur,roFp.Je.aSnuPbsattreantte Nfoor. SEuPp0p23o7rt7i8n4gB A1,b2r3asSievpet eGmribt eArd1h98e7si.ves,Method for Forming Same and Abrasive Material. European Patent No. EP0237784B1, 23 September 1987.
Publisher Copyright:
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/11/19
Y1 - 2020/11/19
N2 - Paper-based abrasive products are multilayer structures in which the first layer on the paper substrate is usually a latex barrier coating to prevent the migration of adhesive glue into the substrate. The high coat weight (10 g/m2) of latex barrier layers is a cause of environmental concerns. Hence, alternative materials that can provide the barrier function at lower coat weights are desired. In this work, microfibrillated cellulose (MFC) combined with poly(vinyl) alcohol (PVA) were explored as suitable alternatives to the current latex coatings. Barrier coating formulations containing PVA, MFC, and silica (SiO2) were developed and applied to a paper substrate using a rod coating method on a pilot scale. Coating quality and barrier performance were characterized using scanning electron microscope images, air permeance, surface roughness, water contact angle, KIT test, and oil Cobb measurements. The barrier coatings were also studied for adhesion to the subsequent coating layer. An optimal barrier function was achieved with the developed coatings at a low coat weight of ca. 3 g/m2. The adhesion of pure PVA and PVA-MFC barrier coatings to the subsequent coating layer was inadequate; however, silica addition was found to improve the adhesion.
AB - Paper-based abrasive products are multilayer structures in which the first layer on the paper substrate is usually a latex barrier coating to prevent the migration of adhesive glue into the substrate. The high coat weight (10 g/m2) of latex barrier layers is a cause of environmental concerns. Hence, alternative materials that can provide the barrier function at lower coat weights are desired. In this work, microfibrillated cellulose (MFC) combined with poly(vinyl) alcohol (PVA) were explored as suitable alternatives to the current latex coatings. Barrier coating formulations containing PVA, MFC, and silica (SiO2) were developed and applied to a paper substrate using a rod coating method on a pilot scale. Coating quality and barrier performance were characterized using scanning electron microscope images, air permeance, surface roughness, water contact angle, KIT test, and oil Cobb measurements. The barrier coatings were also studied for adhesion to the subsequent coating layer. An optimal barrier function was achieved with the developed coatings at a low coat weight of ca. 3 g/m2. The adhesion of pure PVA and PVA-MFC barrier coatings to the subsequent coating layer was inadequate; however, silica addition was found to improve the adhesion.
KW - microfibrillated cellulose
KW - polyvinyl alcohol
KW - abrasive paper product
KW - barrier coating
KW - silica
UR - http://www.scopus.com/inward/record.url?scp=85096344043&partnerID=8YFLogxK
U2 - 10.3390/coatings10111108
DO - 10.3390/coatings10111108
M3 - Article
SN - 2079-6412
VL - 10
SP - 1
EP - 11
JO - Coatings
JF - Coatings
IS - 11
M1 - 1108
ER -