Strengthening effect of polyelectrolyte multilayers on highly filled paper

Author:

Lee Jegon1,Youn Hye Jung1

Affiliation:

1. Department of Forest Sciences , College of Agriculture and Life Sciences , Seoul National University , 1 Gwanak-ro, Gwanak-gu , Seoul , 08826 , South Korea

Abstract

Abstract Polyelectrolyte multilayering (PEM) treatment is regarded as one of the surface modification techniques to increase paper strength. In this study, the strengthening effect of PEM treatment of highly filled paper was investigated. PEM treatment was performed on both fiber and filler with cationic starch and anionic polyacrylamide systems. Both approaches provided an improvement in the strength of filled paper. However, the strengthening effect of PEM treatment on fibers became weaker as filler content increased, whilst the PEM treatment on fillers was more effective in improving the strength of the highly filled paper. This was because PEM treatment on fillers improved bonding strength between fiber and filler as well as bonding strength between fillers. This was confirmed by the evaluation of specific debonding factor between fiber and filler, and the measurement of the breaking strength of dense film composed of fillers.

Funder

Korea Institute of Energy Technology Evaluation and Planning

Publisher

Walter de Gruyter GmbH

Subject

General Materials Science,Forestry

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