Affiliation:
1. Jiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass Materials, Nanjing Forestry University, Nanjing 210037, China
2. Jining Nantian Nongke Chemical Co., Ltd., Jining 372200, China
Abstract
As increasing fiber hydrophobicity can significantly improve the paper dewatering process, we found that replacing SBKP and HBKP with 0.5% superhydrophobic CPGMA can significantly improve the dewatering of paper sheets. Therefore, it can be concluded that if CPGMA has little effect on paper properties, it will have potential industrial value in the papermaking industry. Consequently, it is necessary to further study the effect of the CPGMAs@CPAM/SiO2/APAM system on paper properties. To evaluate the application potential of the system in the papermaking industry, we investigated the effects of CPGMAs, which replaced the fibers in the stocks, on the paper properties in the CPAM/SiO2/APAM system. The findings demonstrate that as the CPGMA replacement increased, the paper’s tensile strength, bursting strength, tear resistance, and folding endurance all declined. The trend can be segmented into two phases: a rapid decrease for substitution amounts below 0.5% and a gradual decline for substitution amounts exceeding 0.5%. When replaced with a small amount of CPGMAs, there was a negligible effect on these properties. Second, the paper air permeability increased with the CPGMA substitution amount in the stock. Furthermore, the trend of paper air permeability can be divided into two stages—a rapid stage with a substitution amount of <0.5% and a slow stage with a substitution amount of >0.5%. A small amount of CPGMAs could distinctly improve the paper’s air permeability. Third, CPGMAs, which replaced fibers in the stock, minutely affected the paper formation. A small amount of CPGMAs substantially boosted the efficacy of the process of paper manufacture and certain characteristics of the paper, and it had a negligible impact on the strength of paper. The CPGMAs@CPAM/SiO2/APAM technology has the potential to improve the retention and filtration performance of CPAM/SiO2/APAM.
Funder
National Natural Science Foundation of China
Reference19 articles.
1. Click chemistry to synthesize exfoliated xylan-g-quaternized chitosan/montmorillonite nanocomposites for retention and drainage-aid;Cai;Carbohydr. Polym.,2019
2. The use of cationic starch and colloidal silica to improve the drainage characteristics of kraft pulps;Andersson;Nord. Pulp Pap. Res. J.,1986
3. Langley, J., and Litchfield, E. (1986). Dewatering aids for paper application. Proceedings of the TAPPI Papermakers Conference, New Orleans, LA, USA, 14–16 April 1986, TAPPI Press.
4. Hubbe, M. (2005). Micro and Nanoparticles in Papermaking, TAPPI Press. Chapter 1.
5. Important properties of colloidal silica in microparticulate systems;Andersson;Nord. Pulp Pap. Res. J.,1996