Depended pH behavior of chitosan on surface modified fibers of Kraft pulp

Chitosan is known as a natural polymer which improves strengths of papers. So, in this study investigated improvement of chitosan absorption on modified craft fibers and increase its efficiency. The effects of chitosan were experimented in three levels of 0%, 0.75% and 1.25% on modified kraft fibers...

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Autores principales:	Noraldin Nazarnezhad, Naser Rasol pour hedayati, Omid Ramazani
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2015
Materias:	: Chitosan Peroxide hydrogen Modification pH Kraft Pulp Physical & Mechanical Properties Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/04a2388088da4be898b5c7f793ab8d50
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spelling	oai:doaj.org-article:04a2388088da4be898b5c7f793ab8d502021-12-02T09:11:25ZDepended pH behavior of chitosan on surface modified fibers of Kraft pulp1735-09132383-112X10.22092/ijwpr.2015.101474https://doaj.org/article/04a2388088da4be898b5c7f793ab8d502015-09-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_101474_827369703178343758576c99609e93c2.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XChitosan is known as a natural polymer which improves strengths of papers. So, in this study investigated improvement of chitosan absorption on modified craft fibers and increase its efficiency. The effects of chitosan were experimented in three levels of 0%, 0.75% and 1.25% on modified kraft fibers surfaces with 3% hydrogen peroxide in different pH levels (5.5, 7 and 8.5). The results showed that chitosan had better performance at low dosages and alkaline conditions. Also surface fibers modification by hydrogen peroxide caused increase of carboxyl groups and fibers anionic charge. Fibers anionic charge with participant of chitosan formed a dual system. The apparent density increased from acidic pH to alkaline. As, the highest apparent density were reached in alkaline pH and 0.75 % of chitosan. Also, tensile index and burst index of paper were reached in alkaline pH and 0.75 % of chitosan. Whereas, chitosan and the surface modified fibers of kraft pulp did not have a significant level on the tear indexNoraldin NazarnezhadNaser Rasol pour hedayatiOmid RamazaniRegional Information Center for Science and Technology (RICeST)article: ChitosanPeroxide hydrogenModificationpHKraft PulpPhysical & Mechanical PropertiesForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 30, Iss 3, Pp 513-524 (2015)
institution	DOAJ
collection	DOAJ
language	FA
topic	: Chitosan Peroxide hydrogen Modification pH Kraft Pulp Physical & Mechanical Properties Forestry SD1-669.5
spellingShingle	: Chitosan Peroxide hydrogen Modification pH Kraft Pulp Physical & Mechanical Properties Forestry SD1-669.5 Noraldin Nazarnezhad Naser Rasol pour hedayati Omid Ramazani Depended pH behavior of chitosan on surface modified fibers of Kraft pulp
description	Chitosan is known as a natural polymer which improves strengths of papers. So, in this study investigated improvement of chitosan absorption on modified craft fibers and increase its efficiency. The effects of chitosan were experimented in three levels of 0%, 0.75% and 1.25% on modified kraft fibers surfaces with 3% hydrogen peroxide in different pH levels (5.5, 7 and 8.5). The results showed that chitosan had better performance at low dosages and alkaline conditions. Also surface fibers modification by hydrogen peroxide caused increase of carboxyl groups and fibers anionic charge. Fibers anionic charge with participant of chitosan formed a dual system. The apparent density increased from acidic pH to alkaline. As, the highest apparent density were reached in alkaline pH and 0.75 % of chitosan. Also, tensile index and burst index of paper were reached in alkaline pH and 0.75 % of chitosan. Whereas, chitosan and the surface modified fibers of kraft pulp did not have a significant level on the tear index
format	article
author	Noraldin Nazarnezhad Naser Rasol pour hedayati Omid Ramazani
author_facet	Noraldin Nazarnezhad Naser Rasol pour hedayati Omid Ramazani
author_sort	Noraldin Nazarnezhad
title	Depended pH behavior of chitosan on surface modified fibers of Kraft pulp
title_short	Depended pH behavior of chitosan on surface modified fibers of Kraft pulp
title_full	Depended pH behavior of chitosan on surface modified fibers of Kraft pulp
title_fullStr	Depended pH behavior of chitosan on surface modified fibers of Kraft pulp
title_full_unstemmed	Depended pH behavior of chitosan on surface modified fibers of Kraft pulp
title_sort	depended ph behavior of chitosan on surface modified fibers of kraft pulp
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2015
url	https://doaj.org/article/04a2388088da4be898b5c7f793ab8d50
work_keys_str_mv	AT noraldinnazarnezhad dependedphbehaviorofchitosanonsurfacemodifiedfibersofkraftpulp AT naserrasolpourhedayati dependedphbehaviorofchitosanonsurfacemodifiedfibersofkraftpulp AT omidramazani dependedphbehaviorofchitosanonsurfacemodifiedfibersofkraftpulp
_version_	1718398163760447488

Depended pH behavior of chitosan on surface modified fibers of Kraft pulp

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