Polimérisasi: Béda antarrépisi

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Polimérisasi kondensasi lumangsung nalika monomér kabungkeut ngaliwatan [[réaksi kondensasi]]. Réaksi ieu bisa dihasilkeun ku jalan metakeun molekul-molekul nu ngandung gugus fungsi [[alkohol]], [[amina]], atawa [[asam karboxilat]] (atawa turunan karboxil séjénna). Nalika amina meta jeung asam karboxilat, bakal kawangun [[amida]] atawa beungkeut péptida, kalawan ngaleupaskeun cai (jadina polimérisasi ''kondensasi''). Nya ku prosés ieu asam-asam amino numbu sarta ngagabung jadi protéin, sakumaha dijieunna kevlar.
 
Sistim tumuwuh hambalan ranté-tumuwuh (Ing. ''chain growth-step growth system'') ngagolongkeun polimér dumasar mékanismena. Najan lolobana polimér kaasup kana golongan métode adisi-kondensasi, tapi aya sababaraha iwal.
The chain growth-step growth system categorizes polymers based on their mechanism. While most polymers will fall into their similar category from the addition-condensation method of categorization, there are a few exceptions.
 
ChainPolimér growthranté-tumuwuh polymersdiwatesan aresalaku definedpolimér asnu polymerskabentuk formedku by the reaction ofréaksi [[monomermonomér]] withjeung hiji a [[reactivepuseur centerréaktif]]. Polimér Theseieu polymerstumuwuh grownepi toka highbadag moleculardina weightlaju atnu agancang very fast ratepisan. Penting It is important to notedicatet thatyén the overall conversion rates between chain and step growth polymers are similar, but that high molecular weight polymers are formed in addition reactions much more quickly than with step polymerizations.
 
Step growth polymers are defined as polymers formed by the stepwise reaction between functional groups of monomer. Most step growth polymers are also classified as condensation polymers, but not all step growth polymers (like polyurethanes formed from isocyanate and alcohol bifunctional monomers) release condensates. Step growth polymers increase in molecular weight at a very slow rate at lower conversions and only reach moderately high molecular weights at very high conversion (i.e. >95%).