Yuav ua li cas yog ib qho ntxiv polymer tsim?
Yuav ua li cas yog ib qho ntxiv polymer tsim?

Video: Yuav ua li cas yog ib qho ntxiv polymer tsim?

Video: Yuav ua li cas yog ib qho ntxiv polymer tsim?
Video: Huab Vwj & Celesna Lor- Qhov Tawv Tawv-Nkauj Tawm Tshiab 2024, Kaum ib hlis
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Ib ntxiv polymer yog a polymer uas tsim los ntawm kev sib txuas yooj yim ntawm monomers yam tsis muaj kev sib koom ua ke ntawm lwm cov khoom. Ntxiv polymerization txawv ntawm condensation polymerization , uas ua ke tsim cov khoom, feem ntau yog dej. Ntxiv polymers yog tsim los ntawm ntxiv ntawm qee qhov yooj yim monomer units dua.

Yog li ntawd, dab tsi yog qhov ntxiv polymer tsim los ntawm Tetrafluoroethene?

Tetrafluoroethene nkag mus Ntxiv polymerization rau daim ntawv poly( tetrafluoroethene ) uas tseem paub raws li cov npe ntawm Teflon lossis Fluon.

Tom qab, lo lus nug yog, puas yog protein ntxiv polymer? Cov protein yog cov polymers ntawm cov amino acids, uas yog monomers uas muaj amine functional pawg thiab ib pawg carboxylic acid ua haujlwm. Ob pab pawg no hnov qab ua kom muaj kuab paug polymer , tsim ib daim ntawv cog lus amide: Cov protein yog tsim thaum ntau pua lossis ntau txhiab tus amino acids tsim amide bonds los ua polymers.

Ib yam li ntawd, peb theem ntawm kev ntxiv polymerization yog dab tsi?

Cov txheej txheem no muaj peb theem: pib , propagation, thiab kev txiav txim . Nyob rau hauv thawj theem, ib yam khoom raug muab faib ua ob qhov zoo tib yam, txhua tus muaj ib qho tsis muaj electron. (Peroxides, uas muaj O-O daim ntawv cog lus, feem ntau siv rau hauv lub luag haujlwm no.) Ib qho molecule uas tsis muaj hluav taws xob tsis sib xws yog hu ua dawb radical.

Vim li cas PVC yog ib qho ntxiv polymer?

(c) Polymerization ntawm chloroethene (vinyl chloride) Qhov no yog ib qho piv txwv ntawm Ntxiv polymerization . PVC yog tsim los ntawm dawb-radical polymerization hauv kev ncua. Thaum polymerization , cov polymer precipitates tawm raws li nws yog tsim, vim nws yog insoluble nyob rau hauv lub monomer.

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