Kev sib koom tes lossis stereospecific polymerization koom nrog coj cov monomers hauv lawv txoj hauv kev mus rau cov saw hlau loj hlob. … Hauv luv luv, cov catalysts tswj txoj hauv kev thiab kev ua haujlwm ntawm cov saw hlau loj hlob los ntawm kev tsim cov complexes.
Dab tsi yog stereospecific polymers lossis Tacticity ntawm polymers?
"Tacticity" yog lo lus siv los txhais cov yam ntxwv zoo li no ntawm polymers. Lo lus "tacticity" txhais tau tias yog " Kev txiav txim siab ntawm kev ua tiav ntawm cov txheej txheem rov ua dua tshiab hauv cov saw tseem ceeb ntawmib qho macromolecule ib txwm, ib qho oligomer molecule, ib qho thaiv tsis tu ncua lossis cov saw hlau tsis tu ncua.”
txhais li cas los ntawm stereospecific?
Los ntawm Wikipedia, phau ntawv qhia dawb. Hauv chemistry, stereospecificity yog khoom ntawm cov tshuaj tiv thaiv uas ua rau cov khoom sib txawv stereoisomeric cov tshuaj tiv thaiv los ntawm cov khoom sib txawv stereoisomeric reactants, lossis uas ua haujlwm ntawm ib qho (lossis ib pawg) ntawm cov stereoisomers.
Ziegler Natta catalyst ua li cas rau stereospecific polymers?
Lub Cossee-Arlman mechanism piav qhia txog kev loj hlob ntawm stereospecific polymers. Cov txheej txheem no hais tias polymer loj hlob los ntawm kev sib koom ua ke ntawm alkene ntawm qhov chaw tsis muaj nyob ntawm titanium atom, uas yog ua raws li kev nkag ntawm C=C daim ntawv cog lus rau hauv Ti−C daim ntawv cog lus ntawm lub chaw ua haujlwm..
Peb hom polymerization yog dab tsi?
Muaj pebhom kev faib tawm nyob rau hauv qeb no, uas yog, Ntuj, hluavtaws, thiab Semi-synthetic Polymers
- Natural Polymers: …
- Semi-synthetic Polymers: …
- YSynthetic Polymers: …
- Linear Polymers. …
- Branched-chain Polymers. …
- Cross-linked Polymers. …
- Kev faib tawm raws li Polymerization. …
- Kev cais raws li Monomers.
