I don't think that there is much difference between the two.
Viscose and Tencel are a couple of regenerated fibres.
mostly Cambodia
Some examples of man made fibres are: nylon, polyester and acrylic :)
There are two types of manufactured fibers: regenerated fibers and synthetic fibers. Regenerated fibers are made from natural materials by processing these materials to form a fiber structure. So manufactured fibres are made by processing natural matirial to form a fibre structure. Visit this website: http://42explore.com/fibers.htm
They are made using wood pulp and chemicals. Silk worms use a spinneret on they're heads to make silk, to make regenerated fibres scientists imitate this by making a fake spinneret.
Examples of natural fibres?
optical fibres, porcelain are the examples......
Synthetic fibres are man-made - polyester, nylon, rayon etc.. The alternative is natural fibres - cotton, wool, silk, jute etc.Technically rayon is a regenerated cellulose fiber. It's chemical composition is the same as wood or cotton but it has been processed so extensively that many people would call it a "synthetic" fiber.
Fibres(substances used to digest food) and cells of dead organisms are examples.
Rayon was one of the first regenerated fibers. It is made from cellulose obtained from wood pulp. the wood pulp is reacted with sodium hydroxide and carbon disulphide and then more caustic soda. The viscose produced is then passed through an acid batch and a spun cellulose based fiber is produced.
Our lizard regenerated his lost tail.