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  2. Secondary cell wall - Wikipedia

    en.wikipedia.org/wiki/Secondary_cell_wall

    The direction of the microfibrils is called microfibril angle (MFA). In the secondary cell wall of fibres of trees a low microfibril angle is found in the S2-layer, while S1 and S3-layers show a higher MFA . However, the MFA can also change depending on the loads on the tissue. It has been shown that in reaction wood the MFA in S2-layer can ...

  3. Microfibril - Wikipedia

    en.wikipedia.org/wiki/Microfibril

    A microfibril is a very fine fibril, or fiber-like strand, consisting of glycoproteins and cellulose.It is usually, but not always, used as a general term in describing the structure of protein fiber, e.g. hair and sperm tail.

  4. Fibril - Wikipedia

    en.wikipedia.org/wiki/Fibril

    It has a low stiffness ~0.6MPa but a high energy restoring percentage ~98%, and efficiently helps flying insects to flap wings or fleas to jump. Spider silk fibril is composed of stiff crystallized β-sheets structure, responsible for strength, and amorphous matrix surrounding, improving toughness and elongation ability. [ 16 ]

  5. Angle gauge - Wikipedia

    en.wikipedia.org/wiki/Angle_gauge

    An angle gauge is a tool used by foresters to determine which trees to measure when using a variable radius plot design in forest inventory. Using this tool a forester can quickly measure the trees that are in or out of the plot. An angle gauge is similar to a wedge prism though it must be held a fixed distance from the eye to work properly ...

  6. Microcrystalline cellulose - Wikipedia

    en.wikipedia.org/wiki/Microcrystalline_cellulose

    Different properties of MCC are measured to qualify its suitability to such utilization, namely particle size, density, compressibility index, angle of repose, powder porosity, hydration swelling capacity, moisture sorption capacity, moisture content, crystallinity index, crystallite size, and mechanical properties such as hardness and tensile ...

  7. Haze (optics) - Wikipedia

    en.wikipedia.org/wiki/Haze_(optics)

    Reflection Haze is an optical phenomenon usually associated with high gloss surfaces, it is a common surface problem that can affect appearance quality. The reflection from an ideal high gloss surface should be clear and radiant, however, due to scattering at imperfections in the surface caused by microscopic structures or textures (≈ 0.01 mm wavelength) the reflection can appear milky or ...

  8. Nanocellulose - Wikipedia

    en.wikipedia.org/wiki/Nanocellulose

    CNCs could also be made to gel in water under low power sonication giving rise to aerogels with the highest reported surface area (>600m2/g) and lowest shrinkage during drying (6.5%) of cellulose aerogels. [66] In another study by Aulin et al., [68] the formation of structured porous aerogels of nanocellulose by freeze-drying was demonstrated ...

  9. Hygroscopy - Wikipedia

    en.wikipedia.org/wiki/Hygroscopy

    [2] The follicle mesocarp consists of high density branched fiber bundles; the endocarp, low density parallel fibers. A suture is caused by differential hygroscopic movements between layers, their microfibril structures having a large angle disparity (microfibril angle (MFA) γ = 75–90°). [2]

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