An investigation of the cell wall ultrastructure of the sapwood of ten Greek wood species by means of chemical modification

Papadopoulos, Antonios N.

doi:10.1007/s00107-005-0038-z

Cited by 8 publications

(2 citation statements)

References 2 publications

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“…When the water is desorbed, the stresses on the cell wall relax, thus leading to its shrinkage. This shrinkage is due not only to the capillary forces acting inside the cell structure of the natural fiber, but also to the presence of lignin that favors the collapse of the microcapillaries 35 …”

Section: Resultsmentioning

confidence: 99%

In situ monitoring of moisture uptake of flax fiber reinforced composites under humid/dry conditions

Calabrese

Fiore

Piperopoulos

et al. 2021

J of Applied Polymer Sci

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The use of green materials such as natural fiber‐reinforced composites represents an increasingly stringent prerogative in the future planning of industrial and non‐industrial production. The optimization of these materials is the main aim of the current research, focused on the evaluation of the behavior of flax fiber reinforced composites exposed to isothermal adsorption and desorption cycles, at varying the partial pressure of water vapor (P/P0). For this purpose, the moisture uptake and the morphology changes of the composite material and their constituents were in situ monitored through a measurement protocol, by using a dynamic vapor sorption (DVS) analysis, coupled with an environmental scanning electron microscopy (ESEM) visual investigation. A dependence of moisture uptake and diffusivity on the composite morphology was clearly detected. In particular, no significant variation in the morphology of the specimen is noticed at low water vapor partial pressure (i.e., P/P0 up to 5.4%) due to the limited absorption capacity (i.e., lower than 1%). On the other hand, fibers morphology changes at increasing the partial pressure up to 25.1%, showing a sensitive increase in volume. This phenomenon becomes much more relevant for high relative humidity values (i.e., ~90%), reaching more than 6% of absorption capacity.

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Section: Resultsmentioning

confidence: 99%

In situ monitoring of moisture uptake of flax fiber reinforced composites under humid/dry conditions

Calabrese

Fiore

Piperopoulos

et al. 2021

J of Applied Polymer Sci

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“…The bark of trees is a source of energy and a raw material for fuel in many countries. It has wide chemical uses because it contains a high percentage of extractive materials present (in the trunk, bark and sap) and polyphenolic compounds compared to wood, from the main components of the cell wall such as cellulose, hemicellulose and kine, there are components with low molecular weights known as (wood extracts), H contains hydroxy and epoxy derivatives of suberin fatty acids less frequently than chemicals Obtained from H. sawdust [16,17,18,19]. This study came to investigate the effect of spraying different levels of growth regulator (CPPU) and covering the potting soil with two types of covering material: (bark and wood of eucalyptus trees).…”

Section: Introductionmentioning

confidence: 99%

Effect of Foliar Application of CPPU and Two Type of Mulching Soil Pots in Growth and Flowering of Rose Plant (Rosa Hybrida L.)

Star,

Ai-Saad,

Ahmed

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The study was conducted in the Lath house of the College of Agriculture / University of Kirkuk / Agricultural Research and Experiment Station, for the period from September 15/ 2021 to Until the end of April / 2022, The research included studying the effect of spraying with a growth regulator (CPPU) at concentrations of (C1 0, C2 30, C3 60) mg L−1 with two sprays, the first one a day after the seedling rotation process, and the second one a week later, The first spray, And the type of mulching soil pots (bark and wood of eucalyptus trees) on the growth and flowering of Rosa hybrid L, The factorial experiment was conducted according to the (R.C.B.D), with a split experiment. The effect of spraying with the growth regulator CPPU at a concentration of 30 mg.L−1 led to a significant increase in the number of leaves, 167.66 leaves.plant−1 and the flower diameter was 13.91 cm, Plants grown in pots covered with eucalyptus bark obtained the highest significant values for some of the studied traits, As an increase in the number of developing branches, 11.00 branch.plant−1 and flower diameter 14.38 cm, The interaction between CPPU spraying and the type of mulching soil pots had a significant effect.The spray increased with 30 mg.L−1 of CPPU and plants growing in pots covered with eucalyptus bark, The number of developing branches is 11.50 branches.Plant−1 and flower diameter is 14.80 cm.

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Dried cell wall nanopore configuration of Douglas-fir, western red cedar and aspen heartwoods

Shi

Avramidis

2018

Wood Sci Technol

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An investigation of the cell wall ultrastructure of the sapwood of ten Greek wood species by means of chemical modification

Cited by 8 publications

References 2 publications

In situ monitoring of moisture uptake of flax fiber reinforced composites under humid/dry conditions

In situ monitoring of moisture uptake of flax fiber reinforced composites under humid/dry conditions

Effect of Foliar Application of CPPU and Two Type of Mulching Soil Pots in Growth and Flowering of Rose Plant (Rosa Hybrida L.)

Dried cell wall nanopore configuration of Douglas-fir, western red cedar and aspen heartwoods

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