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Probing Chemical and Physical Properties of Poplar Tension Wood Using Confocal Raman Microscopy and Pulsed Force Mode Atomic Force Microscopy

Published online by Cambridge University Press:  23 January 2017

Mikhael Soliman  and
Laurene Tetard
Mikhael Soliman*
Affiliation:
NanoScience Technology Center, 12424 Research Parkway, Orlando, Florida, USA, 32826 Department of Materials Science and Engineering, University of Central Florida, 12760 Pegasus Drive, Orlando, Florida, USA, 32816
Laurene Tetard
Affiliation:
NanoScience Technology Center, 12424 Research Parkway, Orlando, Florida, USA, 32826 Department of Materials Science and Engineering, University of Central Florida, 12760 Pegasus Drive, Orlando, Florida, USA, 32816
*
*(Email: [email protected])
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Abstract

Lignocellulosic biofuels have been identified as a possible solution to contribute to the world’s demands in energy and environmental sustainability. However, the fundamental understanding of the physical and chemical traits hindering key reactions during biomass to biofuel conversion processes has been limited by the lack of suitable tools and by the large natural variability in such systems. Reaction wood constitutes a good model system to study variations of cellulose content, given the increase in cellulose content in the cell walls of the region under tension in the plant during growth. In this work, we use confocal Raman mapping and Pulsed Force Mode Atomic Force Microscopy (PFM) to explore the effect of variation in cellulose content on the structure and composition of the plant cell wall at the nanoscale. Using statistical analysis on Raman datasets, the characteristic peaks for cellulose and lignin are examined to reveal changes in peak positions across the different scanned regions of the cross section. PFM is used to study local mechanical properties of the different layers of the cell wall. Our approach facilitates the correlation of structure-composition traits of the plant cell wall for a more fundamental understanding of processes involved in biofuel research.

Keywords

Raman spectroscopyscanning probe microscopy (SPM)biomaterial
Type
Articles
Information
MRS Advances , Volume 2 , Issue 19-20: Biomaterials and Soft Materials , 2017 , pp. 1103 - 1109
Copyright
Copyright © Materials Research Society 2017 

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References

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