Leaf fiber

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Abaca that has been stripped down to just the fibrous material Abaca sachsenleinen 01.jpg
Abaca that has been stripped down to just the fibrous material

Leaf fibers or hard fibers are a type of plant fiber mainly used for cordage (producing rope). They are the toughest of the plant fibers which is most likely due to their increased lignin content when compared to the other groups of plant fibers. [1] They are typically characterized as being very tough and rigid lending them towards being used in rope production over clothing or paper like other plant fibers. [2]

Leaf fibers can be found in the vascular bundles of plant leaves and therefore consist of both phloem and xylem tissues and any other vascular sheathing tissues (for example sclerenchyma cells). More specifically, leaf fibers are typically found in monocotyledonous leaves. [1]

The fibers are harvested from plants in long, thin bundles mainly through the process of decortication which is where the non-fibrous tissues are scraped away from the plant fibers by hand or in a machine. For the majority of cases, the leaves must be hand-picked from the plant at maturity before undergoing decortication which causes the harvesting of hard fibers to be a very energy and time intensive task. [3]

Sisal and abaca are the primary leaf fibers that are harvested and sold. These are both mainly used to make rope or matting but, as technology continues to advance these, and other, hard fibers are being able to be broken down and pulped to be used in paper products. [1]

Not much research is being looked into the possibilities and abilities of leaf fibers as they are very hard to harvest and process so synthetic fibers are more commonly used in their place. [3]

Common fibers

Related Research Articles

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Abacá, binomial name Musa textilis, is a species of banana native to the Philippines, grown as a commercial crop in the Philippines, Ecuador, and Costa Rica. The plant, also known as Manila hemp, has great economic importance, being harvested for its fiber, also called Manila hemp, extracted from the leaf-stems. Abacá is also the traditional source of lustrous fiber hand-loomed into various indigenous textiles in the Philippines like t'nalak, as well as colonial-era sheer luxury fabrics known as nipís. They are also the source of fibers for sinamáy, a loosely woven stiff material used for textiles as well as in traditional Philippine millinery.

<span class="mw-page-title-main">Sisal</span> Species of flowering plant in the family Asparagaceae

Sisal is a species of flowering plant native to southern Mexico, but widely cultivated and naturalized in many other countries. It yields a stiff fibre used in making rope and various other products. The sisal fibre is traditionally used for rope and twine, and has many other uses, including paper, cloth, footwear, hats, bags, carpets, geotextiles, and dartboards. It is also used as fibre reinforcements for composite fibreglass, rubber, and concrete products. It can also be fermented and distilled to make mezcal.

<span class="mw-page-title-main">Tissue (biology)</span> Group of cells having similar appearance and performing the same function

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<span class="mw-page-title-main">Coir</span> Natural fiber

Coir, also called coconut fibre, is a natural fibre extracted from the outer husk of coconut and used in products such as floor mats, doormats, brushes, and mattresses. Coir is the fibrous material found between the hard, internal shell and the outer coat of a coconut. Other uses of brown coir are in upholstery padding, sacking and horticulture. White coir, harvested from unripe coconuts, is used for making finer brushes, string, rope and fishing nets. It has the advantage of not sinking, so can be used in long lengths in deep water without the added weight dragging down boats and buoys.

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Henequen is a species of flowering plant in the family Asparagaceae, native to southern Mexico and Guatemala. It is reportedly naturalized in Italy, the Canary Islands, Costa Rica, Cuba, Hispaniola, the Cayman Islands and the Lesser Antilles.

<span class="mw-page-title-main">Jute</span> Bast fiber from the genus Corchorus

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The ground tissue of plants includes all tissues that are neither dermal nor vascular. It can be divided into three types based on the nature of the cell walls.

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  2. Collenchyma cells have thin primary walls with some areas of secondary thickening. Collenchyma provides extra mechanical and structural support, particularly in regions of new growth.
  3. Sclerenchyma cells have thick lignified secondary walls and often die when mature. Sclerenchyma provides the main structural support to a plant.
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Vascular tissue is a complex conducting tissue, formed of more than one cell type, found in vascular plants. The primary components of vascular tissue are the xylem and phloem. These two tissues transport fluid and nutrients internally. There are also two meristems associated with vascular tissue: the vascular cambium and the cork cambium. All the vascular tissues within a particular plant together constitute the vascular tissue system of that plant.

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<i>Asclepias cordifolia</i> Species of flowering plant

Asclepias cordifolia is a species of milkweed commonly called heart-leaf milkweed or purple milkweed. It is native to the western United States, growing between 50 and 2,000 m elevation in the northern Sierra Nevada and Cascade ranges. Heart-leaf milkweed was valued by the Native American Miwok tribe for its stems, which they dried and processed into string and rope.

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Setralit is a technical natural fiber based on plant fibers whose property profile has been modified selectively in order to meet different industrial requirements. It was first manufactured in 1989 by Jean-Léon Spehner, an Alsatian engineer, and further developed by the German company ECCO Gleittechnik GmbH. The name “Setralit“ is derived from the French company Setral S.à.r.l. which is a subsidiary company of ECCO, where Spehner was employed at that time. Setralit was officially described first in 1990.

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References

  1. 1 2 3 Levetin, Estelle; McMahon, Karen (2012). Plants and Society. New York, NY: McGraw-Hill. pp. 297–298. ISBN   978-0-07-352422-1.
  2. Ilvessalo-Pfäffli, Marja-Sisko (1995). Fiber Atlas. Springer. pp. Chapter 9. ISBN   978-3-662-07212-7.
  3. 1 2 "Leaf Fibre". Encyclopædia Britannica. 1998-07-20.