Natural fibers: Silk
The silk :
Silk most often comes from the bombyx mori (silkworm). The latter wraps itself in a cocoon made of a continuous thread (the only natural continuous thread) which measures 700 to 1200 meters long. The thread is made up of two very fine filaments of a protein substance called fibroin. These two strands are held together by sericin, a kind of sandstone which retains the silk filaments and which is eliminated during digging. Unscrubbed silk is called raw silk.
The advantages of silk:
Due to its natural elasticity (around 15%), silk is very wrinkle-free. Although its fiber is the finest of natural fibers, it is as strong as steel (at equal fineness). Among its advantages, we can also cite a very high affinity for dyes thanks to its absorbent properties.
The disadvantages of silk:
Silk is particularly sensitive to chemical attack. Perspiration, deodorants and perfumes as well as unsuitable detergents can damage it.
La soie est également un excellent barrage thermique. Sous le microscope on on voit très bien le canal d’air au centre du brun. Tout comme en construction les briques sont creuses ( pleines d’air) le meilleur isolant.
C’est pourquoi dans les expéditions des pôles nord où sud, les techniciens portent des gants d’évêque en soie, pour les expériences à l’extérieur des bâtiments.
Renseignements Paul Emil Victor rencontré pendant mes études à la maison de Sèvre.
Mosler on
Bonjour,
Merci pour votre message. Nous sommes ravis d’avoir contribué à vos travaux :)
Mademoiselle Grenade on
Merci grace a votre site j’ai reussis a faire mon travail en technologie couture x) c’est très sympa, vous etes utile !!
Demir on