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IJSTR >> Volume 6 - Issue 2, February 2017 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Chemical Structure And Glass Transition Temperature Of Ricinodendron Heudelotii Wood For Its Pulp Production Potential

[Full Text]

 

AUTHOR(S)

Bolade M. Ogunleye

 

KEYWORDS

glass transition temperature, lignin, Ricinodendron heudelotii, syringyl to guaiacyl

 

ABSTRACT

The chemical structure and glass transition temperature of Ricinodendron heudelotii wood were studied using Attenuated total reflectance Fourier transform infrared (FTIR) spectroscopy and dynamic mechanical analysis (DMA), respectively. The thermal characteristic of R. heudelotii was conducted on N-methyl-2-pyrolidone saturated specimens while submerged under the same solvent at a temperature range from 130 to 0°C at 3°C/min, multi-frequencies of 0.1-10 Hz using DMA. Ratios of syringyl to guaiacyl associated bands along the longitudinal and radial positions of the wood differ significantly. Higher syringyl/guaiacyl ratio of the corewood than middlewood correlate well with lowering softening temperature. The findings in this research reveals that more chemical would be required to pulp R. heudelotii wood obtained from the base (10% of the merchantable height) and outerwood because of the presence of high lignin content compared to the other longitudinal and radial positions, respectively where wood were collected. Also, outerwood favour pulp production compared to middlewood and corewood because of the high holocellulose content.

 

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