Allergenic raw materials dating
Natural fibers tend to be much more sensitive than synthetic blends.
This is mainly because natural products are biodegradable.
Failure to clean up a spill in the darkroom resulted in Chardonnet's discovery of nitrocellulose as a potential replacement for real silk.
Realizing the value of such a discovery, Chardonnet began to develop his new product, The first successful process was developed in 1894 by English chemist Charles Frederick Cross, and his collaborators Edward John Bevan and Clayton Beadle.
They named the fiber "viscose", because the reaction product of carbon disulfide and cellulose in basic conditions gave a highly viscous solution of xanthate.
The first commercial viscose rayon was produced by the UK company Courtaulds Fibers in 1905.
The first polyester fiber was introduced by John Rex Whinfield and James Tennant Dickson, British chemists working at the Calico Printers' Association, in 1941.
They produced and patented the first polyester fiber which they named Terylene, also known as Dacron, equal to or surpassing nylon in toughness and resilience.
In the late 1870s, Chardonnet was working with Louis Pasteur on a remedy to the epidemic that was destroying French silkworms.This brings the fibers closer together and allows them to crystallize and orient. This utilizes heat to permeate the shape/dimensions of the fabrics made from heat-sensitive fibers.Synthetic fibers are more durable than most natural fibers and will readily pick-up different dyes.Synthetic fibers (British English: synthetic fibres) are fibers made by humans with chemical synthesis, as opposed to natural fibers that humans get from living organisms with little or no chemical changes.They are the result of extensive research by scientists to improve on naturally occurring animal fibers and plant fibers.