Structures and morphologies of cast and plastically strained polyamide 6 films as evidenced by confocal Raman microspectroscopy and atomic force microscopy

Polymer ◽  
2004 ◽  
Vol 45 (17) ◽  
pp. 6013-6026 ◽  
Author(s):  
Vincent Ferreiro ◽  
Christophe Depecker ◽  
Jacky Laureyns ◽  
Ghislaine Coulon
Keyword(s):  
Atomic Force Microscopy ◽  
Polyamide 6 ◽  
Raman Microspectroscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Confocal Raman Microspectroscopy ◽  
Confocal Raman

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

MRS Advances ◽  
2017 ◽  
Vol 2 (19-20) ◽  
pp. 1103-1109
Author(s):  
Mikhael Soliman ◽  
Laurene Tetard
Keyword(s):  
Atomic Force Microscopy ◽  
Cell Wall ◽  
Plant Cell Wall ◽  
Cellulose Content ◽  
Force Microscopy ◽  
Atomic Force ◽  
Fundamental Understanding ◽  
Force Mode ◽  
Confocal Raman ◽  
Mode Atomic Force Microscopy

ABSTRACTLignocellulosic 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.

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