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Rayon - Semi Synthetic Polymers
Rayon is a man made material which contains purified cellulose in the type of long fibres. Cellulose is reacted along with cold NaOH solution to cleanse it and then treated along with CS2 to form a viscose solution. This is the reason why rayon is sometimes described as viscose rayon. This solution is provided to go through fine pores in metal cylinder, into a dilute H2SO4. This generates in the creation of long fibres. Rayon fibre is chemically identical to cotton but has a shine such as silk. As such rayon is as well described as artificial silk. Rayon is required on a big scale for making textiles, tyre-chord, surgical dressings and carpets. Not similar to fully synthetic polymers, it takes moisture and is bio-degradable.
Nucleophilic aromatic substitution is possible, but involves substitution of a typical leaving group rather than a hydrogen atom. Remembering that S N 2 and S N 1 mechanisms are no
Q. a. What is the origin of fossil fuels? b. List three fossil fuels. c. Are fossil fuels a renewable resource? Answer: a. Coal, natural gas and oil. b. Fossil fue
If electron falls from n=3 to n= 2 , then emitted energy is: (1) 10.2ev (2) 12.09 ev (3) 1.9ev (4)0
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Principle of atomic emission spectrometry: The analyte sample is introduced into the centre of the plasma as an aerosol with the help of a nebuliser using argon flow. In the p
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In CH2=C=CH2 it is given that the length between H of first carbon at top and H of last carbon at top is L1 and length between H of first carbon at top and H of last carbon at bot
Some of them show (S)-configuration at all their chiral centres. Illustrate their configurational formulae. If there is a meso-compound with this molecular formula illustrate it
I have to write about the water treatment and the fda and epa and compare and contrast the rules and regulations for tap and bottled water and stuff. Can you help?
dehydration of alcohol with mechanism
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