Effect of alum-cationic rosin consumption level on the properties of papers made from recycled white sheets trimmings

Nowadays, recycled fibers are the main fiber source for manufacturing packaging papers. Sizing of such papers, based on the type of application, is of great importance. In this research, the effect of alum-cationic rosin consumption amount in pH of about 6.5 on the properties of papers made from whi...

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Autores principales:	Fatemeh Naijian, Hossein Resalati, Hamid reza Rodi, Hossein Jalali-Torshizi, Kamal Pirmoradian
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2017
Materias:	Rosin alum Paper properties recycled fibers white sheets trimmings Contact angle Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/be1e5a00e4074daaa2de628c0316751d
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spelling	oai:doaj.org-article:be1e5a00e4074daaa2de628c0316751d2021-12-02T07:45:08ZEffect of alum-cationic rosin consumption level on the properties of papers made from recycled white sheets trimmings1735-09132383-112X10.22092/ijwpr.2017.109581https://doaj.org/article/be1e5a00e4074daaa2de628c0316751d2017-07-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_109581_1134da8150dca9c00b66723f9093bc63.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XNowadays, recycled fibers are the main fiber source for manufacturing packaging papers. Sizing of such papers, based on the type of application, is of great importance. In this research, the effect of alum-cationic rosin consumption amount in pH of about 6.5 on the properties of papers made from white sheets trimmings was examined. In order to optimize consumption extent, pulp suspension sizing with alum in six level of 0, 4, 5, 7, 8, and 10 %, and rosin with the ratio of 50 % of alum based on oven dry (OD) pulp was done according to the TAPPI standard methods. Then by preparation of handsheets with basis weight of about 65±5 g/m2, their Cobb test (45 second), structural and strength characteristics were investigated. Statistical analysis of the results have shown that alum and rosin consumption amount of about 7 and 3.5 % based on OD pulp is the best suitable level for internal sizing of white sheets trimmings fibers. In these alum-rosin level, Cobb value of papers decreased from 120±11.6 g/m2 the lowest value of about 64±9.7 g/m2. Contact angle of water droplet with the paper surface increased from 24.81º to 96.53º. Paper tensile index decreased up to 125±9.7 N.m/g by such sizing level and again increased with increasing alum-rosin level. Seemingly, such phenomena can be attributed to the alum role in charge neutralizing, cellulosic fines retention and improving bonding-ability of paper network. Meaningful decrease of paper surface roughness from 10.34±0.54 µm in control sample to 8.23±1.37 µm in sized papers in optimized level confirmed this assumption.Fatemeh NaijianHossein ResalatiHamid reza RodiHossein Jalali-TorshiziKamal PirmoradianRegional Information Center for Science and Technology (RICeST)articleRosinalumPaper propertiesrecycled fiberswhite sheets trimmingsContact angleForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 32, Iss 2, Pp 238-250 (2017)
institution	DOAJ
collection	DOAJ
language	FA
topic	Rosin alum Paper properties recycled fibers white sheets trimmings Contact angle Forestry SD1-669.5
spellingShingle	Rosin alum Paper properties recycled fibers white sheets trimmings Contact angle Forestry SD1-669.5 Fatemeh Naijian Hossein Resalati Hamid reza Rodi Hossein Jalali-Torshizi Kamal Pirmoradian Effect of alum-cationic rosin consumption level on the properties of papers made from recycled white sheets trimmings
description	Nowadays, recycled fibers are the main fiber source for manufacturing packaging papers. Sizing of such papers, based on the type of application, is of great importance. In this research, the effect of alum-cationic rosin consumption amount in pH of about 6.5 on the properties of papers made from white sheets trimmings was examined. In order to optimize consumption extent, pulp suspension sizing with alum in six level of 0, 4, 5, 7, 8, and 10 %, and rosin with the ratio of 50 % of alum based on oven dry (OD) pulp was done according to the TAPPI standard methods. Then by preparation of handsheets with basis weight of about 65±5 g/m2, their Cobb test (45 second), structural and strength characteristics were investigated. Statistical analysis of the results have shown that alum and rosin consumption amount of about 7 and 3.5 % based on OD pulp is the best suitable level for internal sizing of white sheets trimmings fibers. In these alum-rosin level, Cobb value of papers decreased from 120±11.6 g/m2 the lowest value of about 64±9.7 g/m2. Contact angle of water droplet with the paper surface increased from 24.81º to 96.53º. Paper tensile index decreased up to 125±9.7 N.m/g by such sizing level and again increased with increasing alum-rosin level. Seemingly, such phenomena can be attributed to the alum role in charge neutralizing, cellulosic fines retention and improving bonding-ability of paper network. Meaningful decrease of paper surface roughness from 10.34±0.54 µm in control sample to 8.23±1.37 µm in sized papers in optimized level confirmed this assumption.
format	article
author	Fatemeh Naijian Hossein Resalati Hamid reza Rodi Hossein Jalali-Torshizi Kamal Pirmoradian
author_facet	Fatemeh Naijian Hossein Resalati Hamid reza Rodi Hossein Jalali-Torshizi Kamal Pirmoradian
author_sort	Fatemeh Naijian
title	Effect of alum-cationic rosin consumption level on the properties of papers made from recycled white sheets trimmings
title_short	Effect of alum-cationic rosin consumption level on the properties of papers made from recycled white sheets trimmings
title_full	Effect of alum-cationic rosin consumption level on the properties of papers made from recycled white sheets trimmings
title_fullStr	Effect of alum-cationic rosin consumption level on the properties of papers made from recycled white sheets trimmings
title_full_unstemmed	Effect of alum-cationic rosin consumption level on the properties of papers made from recycled white sheets trimmings
title_sort	effect of alum-cationic rosin consumption level on the properties of papers made from recycled white sheets trimmings
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2017
url	https://doaj.org/article/be1e5a00e4074daaa2de628c0316751d
work_keys_str_mv	AT fatemehnaijian effectofalumcationicrosinconsumptionlevelonthepropertiesofpapersmadefromrecycledwhitesheetstrimmings AT hosseinresalati effectofalumcationicrosinconsumptionlevelonthepropertiesofpapersmadefromrecycledwhitesheetstrimmings AT hamidrezarodi effectofalumcationicrosinconsumptionlevelonthepropertiesofpapersmadefromrecycledwhitesheetstrimmings AT hosseinjalalitorshizi effectofalumcationicrosinconsumptionlevelonthepropertiesofpapersmadefromrecycledwhitesheetstrimmings AT kamalpirmoradian effectofalumcationicrosinconsumptionlevelonthepropertiesofpapersmadefromrecycledwhitesheetstrimmings
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Effect of alum-cationic rosin consumption level on the properties of papers made from recycled white sheets trimmings

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