TY - JOUR
T1 - The effect of oxyalkylation and application of polymer dispersions on the thermoformability and extensibility of paper
AU - Kouko, Jarmo
AU - Setälä, Harri
AU - Tanaka, Atsushi
AU - Khakalo, Alexey
AU - Ropponen, Jarmo
AU - Retulainen, Elias
N1 - Funding Information:
This work was a part of the ACel program of the Finnish Bioeconomy Cluster CLIC Innovation. Funding by the Finnish Funding Agency for Technology and Innovation (TEKES) is gratefully acknowledged. Completion of the publication was supported by the ExtBioNet project funded by the Academy of Finland . Dr. Oleg Timofeev is thanked for producing the polymer film samples and Ms. Mirja Nygård for conducting the DMA measurements from them.
Publisher Copyright:
© 2018 The Authors
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/4
Y1 - 2018/4
N2 - Wood fiber-based packaging materials, as renewable materials, have growing market potential due to their sustainability. A new breakthrough in cellulose-based packaging requires some improvement in the mechanical properties of paper. Bleached softwood kraft pulp was mechanically treated, in two stages, using high- and low-consistency refining, sequentially. Chemical treatment of pulp using the oxyalkylation method was applied to modify a portion of fiber material, especially the fiber surface, and its compatibility with polymer dispersions including one carbohydrate polymer. The results showed that the compatibility of the cellulosic fibers with some polymers could be improved with oxyalkylation. By adjusting mechanical and chemical treatments, and the thermoforming conditions, the formability of paper was improved, but simultaneously the strength and stiffness decreased. The results suggest that the formability of the paper is not a direct function of the extensibility of the applied polymer, but also depends on the fiber network structure and surface energy.
AB - Wood fiber-based packaging materials, as renewable materials, have growing market potential due to their sustainability. A new breakthrough in cellulose-based packaging requires some improvement in the mechanical properties of paper. Bleached softwood kraft pulp was mechanically treated, in two stages, using high- and low-consistency refining, sequentially. Chemical treatment of pulp using the oxyalkylation method was applied to modify a portion of fiber material, especially the fiber surface, and its compatibility with polymer dispersions including one carbohydrate polymer. The results showed that the compatibility of the cellulosic fibers with some polymers could be improved with oxyalkylation. By adjusting mechanical and chemical treatments, and the thermoforming conditions, the formability of paper was improved, but simultaneously the strength and stiffness decreased. The results suggest that the formability of the paper is not a direct function of the extensibility of the applied polymer, but also depends on the fiber network structure and surface energy.
KW - biopolymer spraying
KW - consumer packages
KW - paper extensibility
KW - starch acetate
KW - strength of paper
KW - thermoformable web
UR - http://www.scopus.com/inward/record.url?scp=85041529158&partnerID=8YFLogxK
U2 - 10.1016/j.carbpol.2018.01.071
DO - 10.1016/j.carbpol.2018.01.071
M3 - Article
SN - 0144-8617
VL - 186
SP - 411
EP - 419
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
ER -