Hauv chemistry, cationic polymerization yog ib hom kev loj hlob ntawm cov saw hlau polymerization nyob rau hauv uas ib tug cationic pib hloov mus rau ib tug monomer uas ces ua reactive. Qhov no reactive monomer mus rau qhov zoo sib xws nrog lwm cov monomers los tsim ib lub polymer.
Dab tsi yog cationic thiab anionic polymerization?
Cationic polymerization cov tshuaj tiv thaiv yog rhiab rau qhov kub thiab txiasOb qho tib si cov tshuaj tiv thaiv thiab qhov hnyav molecular sai txo nrog nce kub. Anionic polymerization cov tshuaj tiv thaiv feem ntau ua rau cov polymers tsis tu ncua nrog tsawg branching, ntau tswj tacticity thiab nqaim molecular hnyav (MW) tis.
Tus catalyst yog siv rau hauv cationic polymerization?
2.05.
A Lewis acid catalyst feem ntau yog siv los pib cov tshuaj tiv thaiv cationic polymerization los ntawm kev ua kom lub nplhaib oxetane oxygen, tso cai rau nucleophilic nres los ntawm lub nplhaib oxygen. atom ntawm ob oxetane molecule thiab lub nplhaib qhib.
Cationic vinyl polymerization yog dab tsi?
Cationic vinyl polymerization yog ib txoj hauv kev ua cov polymers los ntawm cov molecules me, lossis monomers, uas muaj cov pa roj carbon ob daim ntawv cog lus. Nws txoj kev lag luam tseem ceeb yog siv los ua polyisobutylene. Hauv cationic vinyl polymerization, tus pib yog cation, uas yog ib qho ion nrog cov hluav taws xob zoo.
Qhov txawv ntawm cationic thiab anionic polymer yog dab tsi?
Ob hom yog qhov tseem ceeb heev hauv kev tshem tawm cov khoom ntawm cov dej hauv cov dej uas tau kho. Qhov txawv ntawm ob (2) polymers yog tias ib (1) polymer muaj tus nqi zoo (cationic) thiab lwm qhov muaj tus nqi tsis zoo (anionic).
