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The theoretical part
High-molecular compounds or polymers are
substances that have a high molecular weight of 10-100
thousand.
By their origin, they are divided into natural (starch,
cellulose, lignin, proteins, natural rubber), artificial (viscose
and acetate fiber) and synthetic, which are obtained from
monomers.
There are two main methods for obtaining polymers -
polycondensation and polymerization.
Polymerization reaction - obtaining the Navy by
sequentially joining the monomer units due to the splitting
of the double bond or the cycle of monomers.
n X Y X Y n n X Y X Y Z n
Z
Polycondensation reaction is the production of an IUD
from monomers having at least two functional groups; with
the interaction of a functional group of one monomer with a
functional group of another monomer with the release of
low molecular compounds (water, hydrogen chloride,
ammonia).
O O + O O
+ H O OH + H O OH
H O OH H O OH
O O O O
O O O O O n
Progress
Preparation of urea-formaldehyde resin
