Types Of Hemp Fibers

Though they are many kinds, they share many commonalities in performance, quality and style because they belong to one substance.

Ramie fiber is a single fiber consisting of a single cell. Its length is the longest in the plant fiber. The cross section is waist shaped, with a middle cavity. The two ends are closed and pointed. The whole fiber is flat tubular, twisting, smooth and slightly nodular.

Ramie is a perennial perennial herb. In China, it is basically a white leaf ramie.

Remove the gum from raw ramie, that is, get the textile fibers that can enter the textile processing. It is commonly known as "refined hemp", that is, linen fiber for textile.

Ramie can be collected 3 times a year, and the first growing period is about 90 days. It is called "head hemp", and the second growth period is about 50 days. It is called "two hemp". The third growth period is about 70 days. It is called "three hemp".

Ramie stem cross section is divided into epidermal layer, thick cell layer, leaf green cell layer, phloem fiber layer, cambium, cellulose and everyone oxidant, the hydroxyl of its big person is easily oxidized by oxidant, forming oxidized cellulose.

In most cases, with the oxidation of hydroxyl groups, the degree of polymerization of cellulose also decreases at the same time. This phenomenon is called oxidative degradation.

The oxidation of cellulose is closely related to the type and dosage of oxidants, the temperature and time of oxidation.

It will produce oxidized cellulose with different chemical structure and properties.

Xylem and pith.

Flax and the same species of flax.

Textile flax is a method of fine plant close planting. When the plant is semi mature, it is harvested. Hemicellulose is not a homogeneous sugar composed of monosaccharide, but a group of low molecular weight polysaccharides.

Hemicellulose polysaccharides include grape mannan, xylan, Arabia polysaccharide and galactomannan.

Among them, grape mannan hemicellulose is the most resistant to alkali, and the most difficult to remove during degumming.

It is required that the stem is slender, little fork plant and even fork free plant, so the fibers obtained are not only thin, but also low in lignin content and good in fiber quality.

Flax is actually a variety of flax or oil fiber linen, so its fiber quality is slightly worse than that of conventional flax.

Flax linen is an annual herb, also known as long stem hemp. Its stem is as high as 60~120cm. Flax is widely planted in the world. Pectin material is partial methoxylation or completely four oxylated polygalactoalic acid (pectic acid). The properties of pectin depend on the content of methoxy and the degree of polymerization.

The non esterified carboxyl groups in pectin will combine with polyvalent metal ions to form salt, form a network structure and reduce solubility. The stability of pectic substances to acids, bases and oxidants is lower than that of cellulose.

Russia, Belgium and northeast and Northwest China are the main producing areas in the world, which are suitable for growing in cold regions with high latitude.

The bundles are distributed in the phloem of the stem. There are 20~40 circular bundles in the stem of the hemp. A cell is a fiber. Hemicellulose is the highest content in the gum of hemp. It is the main target of hemp degumming.

Because hemicelluloses are smaller in molecular weight than cellulose, they are more unstable than cellulose in terms of acids, bases and oxidants. Most hemicelluloses can be dissolved in hot lye.

A bundle of fibers has 30~50 roots and single fibers.

In different parts of hemp stem, the structure of single fiber and bundle fiber is different. The single fiber cross section of the root is round or oblate, with thin cell walls, many layers, large and hollow pulp, most of the fibers in the middle part of the stem are polygonal, thick cell walls, and tightly bundled fibers. The quality of the fibers is the best in the stems and stems, and the fibers in the stems are composed of loose bundles, and the cells are fine.