Qhov sib txawv tseem ceeb ntawm kev ncua thiab emulsion polymerization yog tias cov neeg kho tshuab agitation yog siv nyob rau hauv ncua kev kawm ntawv polymerization thaum emulsion polymerization feem ntau tshwm sim nyob rau hauv ib tug emulsion.
Polymerization yog tsim los ntawm macromolecule los ntawm kev sib xyaw ntawm ib qho me me hu ua monomers. Qhov no macromolecule yog ib tug polymer. Yog li ntawd, monomers ua raws li lub tsev blocks ntawm polymers. Muaj ntau txoj hauv kev uas peb tuaj yeem ua cov polymers no. Suspension polymerization thiab emulsion polymerization yog ob hom ntawv.
Suspension Polymerization yog dab tsi?
Kev ncua polymerization yog ib hom polymerization uas peb siv txhua yam kev ntxhov siab. Nws yog ib daim ntawv ntawm radical polymerization. Cov monomers peb siv hauv cov txheej txheem no yog nyob rau hauv cov kua theem. Peb siv cov kua sib tov ua qhov nruab nrab polymerization. Cov kua sib tov no yuav muaj ib lossis ntau dua monomers raws li cov qauv tshuaj ntawm cov polymer uas peb yuav tsim. Cov ntaub ntawv polymer kawg hauv cov txheej txheem no muaj nyob ua ib qho chaw uas raug tshem tawm hauv cov kua nruab nrab. Yog li, nws yuav tsum tau hloov kho ntxiv ua ntej siv.
Daim duab 01: Cov txheej txheem tsim khoom ntawm PVC ntawm Suspension Polymerization
Feem ntau, cov theem ua kua yog qhov nruab nrab aqueous. Tab sis qee zaum, peb tuaj yeem siv cov kuab tshuaj organic thiab. Peb tuaj yeem ua yuav luag tag nrho cov thermoplastic polymers siv txoj kev polymerization.
Cov kev xav tau rau qhov polymerization mus txuas ntxiv yog raws li hauv qab no;
- Dab ntxwg nyoog nruab nrab
- Monomer(s)
- Tus neeg sawv cev ruaj khov
- Initiators
Piv txwv ntawm cov polymers uas peb tuaj yeem siv cov txheej txheem no suav nrog PVC (polyvinyl chloride), styrene resins, PMMA (polymethyl methacrylate), thiab lwm yam. Tsis tas li ntawd, muaj ntau yam zoo rau txoj kev no thiab. Piv txwv li, cov kua nruab nrab peb siv nyob rau hauv cov txheej txheem no ua raws li ib tug zoo tshav kub hloov nruab nrab; yog li nws yog tus nqi-zoo thiab ib puag ncig tus phooj ywg. Ntxiv rau qhov ntawd, peb tuaj yeem tswj tau qhov kub thiab txias ntawm cov tshuaj tiv thaiv nruab nrab.
Y Emulsion Polymerization yog dab tsi?
Emulsion polymerization yog hom polymerization uas feem ntau tshwm sim hauv emulsion. Feem ntau siv daim ntawv yog roj-hauv-dej emulsion. Nws kuj yog ib hom radical polymerization.
Daim duab 02: Txheej txheem ntawm Emulsion Polymerization
Cov kev cai rau cov txheej txheem no yog raws li hauv qab no:
- Dej (raws li tus neeg sawv cev)
- Monomer (qhov no yuav tsum yog dej soluble thiab tuaj yeem polymerize los ntawm cov dawb radicals)
- Surfactant (raws li emulsifier)
- Tus pib (yuav tsum yog dej soluble)
Cov txheej txheem no muaj ntau yam zoo; peb tuaj yeem siv cov txheej txheem no kom tau txais qhov hnyav molecular polymer hauv lub sijhawm luv luv. Txij li thaum peb siv dej ua qhov nruab nrab dispersing, nws tso cai rau polymerizing sai yam tsis poob qhov kub thiab txias. Ntxiv mus, cov khoom kawg ntawm cov polymerization tsis xav tau kev hloov pauv; peb siv tau raws li nws yog.
Qhov txawv ntawm Kev ncua thiab Emulsion Polymerization yog dab tsi?
Kev ncua polymerization yog ib hom polymerization uas peb siv txhua yam kev ntxhov siab. Emulsion polymerization yog ib hom polymerization uas feem ntau pib nrog emulsion. Qhov no yog qhov sib txawv tseem ceeb ntawm kev ncua thiab emulsion polymerization. Qhov tseem ceeb tshaj, cov kev cai ntawm ncua kev kawm ntawv polymerization muaj xws li ib tug dispersing nruab nrab, monomers, stabilizing tus neeg sawv cev thiab pib. Txawm li cas los xij, cov kev cai ntawm emulsion polymerization muaj xws li dej, monomers, pib thiab surfactant. Ntxiv mus, qhov kawg khoom ntawm ncua kev kawm ntawv polymerization yuav tsum tau alternations vim hais tias nws tshwm sim raws li ib tug sphere uas raug tshem tawm nyob rau hauv cov kua nruab nrab. Tab sis, tsis zoo li ncua kev kawm ntawv polymerization, cov khoom kawg ntawm emulsion polymerization tsis tas yuav muaj kev hloov pauv; peb siv tau raws li nws yog.
Cov hauv qab no qhia txog qhov sib txawv ntawm kev ncua thiab emulsion polymerization hauv daim ntawv tabular.
Summary – Ncua tseg vs Emulsion Polymerization
Muaj ntau txoj hauv kev los ua cov polymers. Suspension thiab emulsion polymerization yog ob txoj hauv kev. Qhov txawv ntawm ncua kev kawm ntawv thiab emulsion polymerization yog qhov yuav tsum tau rau ncua kev kawm ntawv polymerization muaj xws li ib tug dispersing nruab nrab, monomers, stabilizing tus neeg saib xyuas thiab pib qhov yuav tsum tau rau emulsion polymerization muaj xws li dej, monomers, initiator thiab ib tug surfactant.
