Step-growth polymerization
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In polymer chemistry, step-growth polymerization is a type of polymerization mechanism in which bi-functional or multifunctional monomers react to form first dimers, then trimers, longer oligomers, an
Comparison of molecular weight vs conversion plot between step-growth and living chain-growth polymerization
Number-fraction distribution curve for linear polymerization. Plot 1, p=0.9600; plot 2, p=0.9875; plot 3, p=0.9950.
Weight fraction distribution plot for linear polymerization. Plot 1, p=0.9600; plot 2, p=0.9875; plot 3, p=0.9950.
Aromatic polyimide
Phenol formaldehyde resin
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Phenol formaldehyde resins, also called phenolic resins or phenoplasts, are synthetic polymers obtained by the reaction of phenol or substituted phenol with formaldehyde. Used as the basis for Bakelit
Step-growth polymerization
…strength and stiffness. It is applied in sizing for cotton and synthetic fibers, stabilizers for adhesives, binders, and film formers in pharmaceuticals. Phenol formaldehyde resin (Bakelite) have good heat resistance and dimensional stability as well as good resistance to most solvents. It also shows good dielectric properties…
Simplified general structure of a resole
Tufnol (Novotext) plate