Iranian Journal of Wood and Paper Science Research

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Keywords = FT-IR spectroscopy

Number of Articles: 3
Investigation on the effect of acetylation and reduction treatments on the chromophore groups of isolated lignin from unbleached hardwoods chemimecanical pulp using FT-IR spectroscopy

Asghar Tabei; Reza Solhnejad; Arash Farajpoor Roodsari

Volume 29, SPRING 1 , May 2014, , Pages 79-93

https://doi.org/10.22092/ijwpr.2014.4926

Abstract
  This study lignin from unbleached hardwoods chemimechanical pulp was extracted and the chromophor functional groups of the lignin were studied. Acetylation and reduction treatments were perfomed and samples were analyzed by FT-IR spectroscopy. A mild acidic dioxin extraction method was employed to isolate ...  Read More
Studing the effect of reducing agents (sodium borhydrade and sodium dithionite) on chemical structures of poplar kraft and bagasse soda alkali lignin by FT-IR spectroscopy

Jafar Azimvand; Seeyed Ahmad Mirshokraie; Ali Abdolkhani

Volume 27, Issue 3 , September 2012, , Pages 556-568

https://doi.org/10.22092/ijwpr.2012.116219

Abstract
  In this study, the chemical changes of functional groups (C=O) and double bond (C=C), induced in the structures of poplar kraft lignin and bagasse soda lignin were investigated. The reducing effect of sodium borohydride and sodium hydrosulfite, followed by the UV irradiation on these two compounds were ...  Read More
Composite wood products
Effect of steam treatment on chemical changes of wood components

Hamid Hatefnia; Ali akbar Enayati; Kazem Dost hosseini; Mohammad Azadfallah

Volume 26, Issue 4 , January 2012, , Pages 682-698

https://doi.org/10.22092/ijwpr.2011.117245

Abstract
  Poplar wood chips were treated by steaming in different conditions. The chemical composition changes of milled wood were studied. The obtained results indicate hemicelluloses degradation, reduction of acetyl groups and formation of organic acid during the treatment. It was also found that steam treatment ...  Read More