Some other less common polymerization include radiation-induced polymerization, ring-opening olefin metathesis polymerization, polycondensation reactions, and iniferter-induced polymerization.
12.
Thereafter, polycondensation is done in the melt or as a solution, where short oligomeric units are combined to give a high molecular weight polymer strand.
13.
Polycondensation of glycolic acid is the simplest process available to prepare PGA, but it is not the most efficient because it yields a low molecular weight product.
14.
After 24h, the resulting purple film grows out from the liquid through the hydrolysis and polycondensation occurring in the reaction environment at the air / liquid and film / liquid boundary.
15.
More specialized techniques include sol-gel processing ( hydrolysis and polycondensation of metal alkoxides ), and combustion ( flame ) synthesis, which are rapid, non-solution phase pathways.
16.
Afterward, a thermal treatment, or firing process, is often necessary in order to favor further polycondensation and enhance mechanical properties and structural stability via final sintering, densification, and grain growth.
17.
In polycondensation small molecules are formed ( in this case of ethanol ), which have to be removed from the equilibrium to achieve the necessary molar mass of the polymer for the use as an implant material.
18.
Afterwards, a thermal treatment, or "'firing "'process, is often necessary in order to favor further polycondensation and enhance mechanical properties and structural stability via final sintering, densification and grain growth.
19.
A unique class of aromatic ether polymers containing perfluorocyclopentenyl ( PFCP ) enchainment was prepared from the simple step growth polycondensation of commercial available bisphenols and octafluorocyclopentene ( OFCP ) in the presence of triethylamine ( Scheme 3 and 4 ).
20.
Chain growth polycondensation polymerizations were initially developed under the premise that a change in substituent effects of the polymer, relative to the monomer, causes the polymers end group to be more reactive this has been referred to as reactive intermediate polycondensation .
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