COMPARISON OF USING SINGLE AND DUAL RETENTION AID SYSTEM ON NEWSPAPER PULP PROPERTIES

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ASADPOUR GH.; RESALATI H.; DEHGHANI M.R.; GHASEMIAN A.; MOHAMMAD NAZHAD M.

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Journal: Journal of Wood and Forest Science and Technology Year:2015 | Volume:22 | Issue:2 Page(s): 75-93

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Title

COMPARISON OF USING SINGLE AND DUAL RETENTION AID SYSTEM ON NEWSPAPER PULP PROPERTIES

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Keywords

NEWSPRINT PAPERSQ2

DUAL RETENTION SYSTEMQ2

STRENGTH PROPERTIESQ2

FORMATIONQ2

Abstract

Background and Objectives: Fines and mineral fillers retain in paper with mechanically stick and colloidal aggregation mechanisms. Chemical additive used to retain the fines colloidal particles, are non functional additives (process aids material). These materials indirectly with improved paper FORMATION and increases fines durability and mineral filler material, has positive impact on the properties of the produced paper. The most important synthetic polymers structures that are used to increase the durability, can be poly acryl amide, polyamines, polyethylene, polyethylene oxide amines. Retention systems species are include single cationic polymer, single anionic polymer with Aluminum ions, dual polymer systems, micro-particle systems and network systems. In dual polymer systems, use two poly electrolytes, one is cationic polymer with high cationic charge density and low molecular weight and the other is anionic polymer with high molecular weight and low anionic charge density. In this research, the effect of DUAL RETENTION SYSTEM, poly ethylene imin plus anionic poly acryl amid on the newspaper properties and the results were compared with single cationic poly acryl amide system.Materials and Methods: The fibers combination used in this study, is the same compound used in Mazandaran pulp and paper industry, include 83 percent CMP chemical- mechanical pulp produced in Mazandaran pulp and paper and 17 percent of import bleached kraft long-fiber pulp and 20 percent by weight of pulp and paper in this study is used precipitated calcium carbonate filler. Also the combination of anionic poly acryl amide and poly ethylene imin polymers and in three levels: low, medium, and high were used and its effect on pulp dewatering properties, filler retention and also handsheet newspaper strength, structural and optical properties of durability, resistance and optical paper were examined and compared to control samples, single retention aid.Results: According to the results and compared with a single cationic poly acryl amid system, using DUAL RETENTION SYSTEM, poly ethylene imin plus anionic poly acryl amid Increases pulp freeness, fines and filler retention, paper FORMATION index and porosity. In terms of paper STRENGTH PROPERTIES, in low consumption levels of retention aid, newspaper STRENGTH PROPERTIES specially tensile and tear index of handsheets treatments that DUAL RETENTION SYSTEM, poly ethylen imin plus anionic poly acryl amid was lower(significant difference) because of poorer FORMATION quality and having more filler materials, compared to the control treatment but with the increase in consumption, especially in the high consumption rate of retention aid were no significant differences between the tensile and burst index between compared treatments. In terms of optical properties, in low consumption levels of dual retention aid system, poly ethylen imin plus anionic poly acryl amid compared to control treatment, found no significant difference in handsheet absorption coefficient and light scattering but with increasing in dual retention aid system consumption, hand sheets absorption coefficients and light scattering sheets, compared with the control treatment was significantly reduced.Conclusion: in comparison with control samples, the applying of DUAL RETENTION SYSTEM, have significant effects on newsprint pulp and paper properties and the positive or negative effects of DUAL RETENTION SYSTEM depends on level of chemical consumption.

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APA: Copy

ASADPOUR, GH., RESALATI, H., DEHGHANI, M.R., GHASEMIAN, A., & MOHAMMAD NAZHAD, M.. (2015). COMPARISON OF USING SINGLE AND DUAL RETENTION AID SYSTEM ON NEWSPAPER PULP PROPERTIES. JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, 22(2), 75-93. SID. https://sid.ir/paper/156883/en

Vancouver: Copy

ASADPOUR GH., RESALATI H., DEHGHANI M.R., GHASEMIAN A., MOHAMMAD NAZHAD M.. COMPARISON OF USING SINGLE AND DUAL RETENTION AID SYSTEM ON NEWSPAPER PULP PROPERTIES. JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY[Internet]. 2015;22(2):75-93. Available from: https://sid.ir/paper/156883/en

IEEE: Copy

GH. ASADPOUR, H. RESALATI, M.R. DEHGHANI, A. GHASEMIAN, and M. MOHAMMAD NAZHAD, “COMPARISON OF USING SINGLE AND DUAL RETENTION AID SYSTEM ON NEWSPAPER PULP PROPERTIES,” JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, vol. 22, no. 2, pp. 75–93, 2015, [Online]. Available: https://sid.ir/paper/156883/en

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