Diferulic and ferulic acid in the cell wall of Avena coleoptiles - Their relationships to mechanical properties of the cell wall

1990 ◽  
Vol 78 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Seiichiro Kamisaka ◽  
Satomi Takeda ◽  
Keiko Takahashi ◽  
Kozo Shibata
Keyword(s):  
Mechanical Properties ◽  
Cell Wall ◽  
Ferulic Acid

Diferulic and ferulic acid in the cell wall of Avena coleoptiles-Their relationships to mechanical properties of the cell wall

1990 ◽  
Vol 78 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Seiichiro Kamisaka ◽  
Satomi Takeda ◽  
Keiko Takahashi ◽  
Kozo Shibata
Keyword(s):  
Mechanical Properties ◽  
Cell Wall ◽  
Ferulic Acid

Variation in Lignin, Cell Wall-Bound p-Coumaric, and Ferulic Acid in the Nodes and Internodes of Cereals and Their Impact on Lodging

2020 ◽  
Vol 68 (45) ◽  
pp. 12569-12576 ◽  
Author(s):  
D. Jo Heuschele ◽  
Kevin P. Smith ◽  
George A. Annor
Keyword(s):  
Cell Wall ◽  
Ferulic Acid

Comparison of mechanical properties of thermally modified wood at growth ring and cell wall level by means of instrumented indentation tests

Holzforschung ◽  
2009 ◽  
Vol 63 (4) ◽  
Author(s):  
Stefanie Stanzl-Tschegg ◽  
Wilfried Beikircher ◽  
Dieter Loidl
Keyword(s):  
Mechanical Properties ◽  
Cell Wall ◽  
Thermal Treatment ◽  
Mechanical Performance ◽  
Growth Ring ◽  
Beech Wood ◽  
Thermal Modification ◽  
Wood Structure ◽  
Instrumented Indentation ◽  
Indentation Tests

Abstract Thermal modification is a well established method to improve the dimensional stability and the durability for outdoor use of wood. Unfortunately, these improvements are usually accompanied with a deterioration of mechanical performance (e.g., reduced strength or higher brittleness). In contrast, our investigations of the hardness properties in the longitudinal direction of beech wood revealed a significant improvement with thermal modification. Furthermore, we applied instrumented indentation tests on different hierarchical levels of wood structure (growth ring and cell wall level) to gain closer insights on the mechanisms of thermal treatment of wood on mechanical properties. This approach provides a variety of mechanical data (e.g., elastic parameters, hardness parameters, and viscoelastic properties) from one single experiment. Investigations on the influence of thermal treatment on the mechanical properties of beech revealed similar trends on the growth ring as well as the on the cell wall level of the wood structure.

scholarly journals Enhancement of the physical and mechanical properties of wood using a novel organo-montmorillonite/hyperbranched polyacrylate emulsion

Holzforschung ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Jianfeng Xu ◽  
Xiaoyan Li ◽  
Ling Long ◽  
Ru Liu
Keyword(s):  
Mechanical Properties ◽  
Cell Wall ◽  
Pinus Radiata ◽  
Wood Sample ◽  
Wood Cell Wall ◽  
Physical And Mechanical Properties ◽  
Radiata Pine ◽  
Compact Structure ◽  
Populus Cathayana ◽  
Modified Wood

AbstractIn this work, a novel waterborne hyperbranched polyacrylate (HBPA) dispersed organo-montmorillonite (OMMT) emulsion was synthesized and used for the treatment of wood in a vacuum environment in order to enhance the physical and mechanical properties of the wood. The sapwood of Cathay poplar (Populus cathayana Rehd.) and Radiata pine (Pinus radiata D.Don) were used as the samples for experimentation. The results showed that the physical and mechanical properties of the wood improved significantly due to the successful penetration of the OMMT and HBPA into the wood cell wall. From it was also observed that OMET completely exfoliated from the HBPA matrix and formed a hydrophobic film covering on the inside walls of the cell lumen. Further, it was observed that the poplar sample displayed better mechanical properties than the pine sample because the pine has a more compact structure when compared to poplar and contains rosin. Furthermore, it was also observed that the mechanical properties of the modified wood sample gradually improved with an increase in the concentration of the emulsion. However, excessive concentration (>4 wt%) did not lead to further improvement.

scholarly journals Evolution of flax cell wall ultrastructure and mechanical properties during the retting step

2019 ◽  
Vol 206 ◽  
pp. 48-56 ◽  
Author(s):  
Alain Bourmaud ◽  
David Siniscalco ◽  
Loïc Foucat ◽  
Camille Goudenhooft ◽  
Xavier Falourd ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cell Wall ◽  
Cell Wall Ultrastructure ◽  
Wall Ultrastructure

scholarly journals Effect of mcl-PHA synthesis in flax on plant mechanical properties and cell wall composition

2018 ◽  
Vol 28 (1) ◽  
pp. 77-90 ◽  
Author(s):  
Magdalena Wróbel-Kwiatkowska ◽  
Mateusz Kropiwnicki ◽  
Jacek Żebrowski ◽  
Athanasios Beopoulos ◽  
Lucyna Dymińska ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cell Wall ◽  
Cell Wall Composition

scholarly journals Mechanism of formation of spiral grain in Aesculus stems: dissymmetry of deformation of stems caused by cyclic torsion

2015 ◽  
Vol 46 (3) ◽  
pp. 501-522 ◽  
Author(s):  
W. Pyszyński
Keyword(s):  
Mechanical Properties ◽  
Cell Wall ◽  
Secondary Cell Wall ◽  
Aesculus Hippocastanum ◽  
Mechanism Of Formation ◽  
Spiral Grain ◽  
Cyclic Torsion ◽  
The Right

The reversibility of deformation of young (3-10-year-old) <i>Aesculus hippocastanum</i> stems was investigated after subjecting them to alternate torsion to the right and left as well as the orientation of the microfibrillar helix in the main S<sub>2</sub> layer of the secondary cell wall in fibres. The studies demonstrated that residual torsions to the right are larger than to the left. The orientation of the fibrillar helix is always Z-wise. The dissymmetry of the mechanical properties of the stem may be responsible for the formation of Z (right-oriented) spiral grain in the stem of a tree undergoing torsions in various directions under the action of winds

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