Qhov sib txawv tseem ceeb ntawm oxirane glycidyl thiab epoxy pawg yog lawv cov kev ua haujlwm. Oxirane yog cov tshuaj lom neeg uas tsis tshua muaj tshwm sim thaum cov pab pawg glycidyl yog ib pawg ua haujlwm uas muaj zog thiab ib pawg epoxy yog ib pawg ua haujlwm uas sib piv ntau dua.
Lo lus oxirane yog siv los ntawm IUPAC los xa mus rau ethylene oxide compound. Glycidyl pawg thiab epoxy pawg yog pawg ua haujlwm ntawm oxirane, uas tuaj yeem lees paub tias yog cov khoom siv ntawm ethylene oxide lossis oxirane.
Oxirane yog dab tsi?
Oxirane lossis ethylene oxide yog cov organic compound uas muaj cov tshuaj formula C2H4O. Qhov sib xyaw no tuaj yeem pom raws li cov qauv cyclic, uas tuaj yeem faib ua ether. Nws kuj yog qhov yooj yim tshaj plaws epoxide compound. Cov qauv ntawm oxirane tuaj yeem piav qhia tias yog lub nplhaib peb-tus tswvcuab uas muaj ib lub pa oxygen nrog rau ob lub atoms. Ntawm no, txhua cov pa roj carbon atom yog sib txuas rau ob lub atoms hydrogen.
Daim duab 01: Cov qauv ntawm Oxirane
Ethylene oxide yog cov roj tsis muaj xim thiab nplaim taws kub ntawm chav tsev. Nws muaj ntxhiab tsw qab ntxiag. Txawm li cas los xij, vim muaj pes tsawg tus atoms nyob rau hauv cov qauv cyclic, qhov sib xyaw no muaj lub nplhaib hnyav heev, uas ua rau nws yooj yim rau kev koom nrog ntau yam tshuaj tiv thaiv, feem ntau ntxiv cov tshuaj tiv thaiv. Cov tshuaj tiv thaiv ntxiv no ua rau lub nplhaib-qhib ntawm no molecule. Kev lag luam, qhov sib xyaw no yog tsim los ntawm cov tshuaj tiv thaiv oxidation ntawm ethylene nyob rau hauv muaj cov nyiaj catalyst.
Thaum xav txog cov qauv tshuaj ntawm oxirane, muaj lub voj voog epoxy uas yog yuav luag txhua daim duab peb sab nrog lub kaum sab xis ntawm 60 degrees. Hauv cov molecule no, carbon-oxygen bonds (C-O) kuj tsis ruaj khov. Qhov kev tsis ruaj khov no cuam tshuam nrog kev ua haujlwm siab ntawm oxirane.
Glycidyl Group yog dab tsi?
Glycidyl pawg yog ib pab pawg ua haujlwm uas muaj epoxy pawg txuas nrog methyl pawg. Lub reactivity ntawm pawg no functional yog nyob rau ntawm cov pa roj carbon atom ntawm methyl pawg; ib qho hydrogen atom raug tshem tawm los ntawm pawg methyl, tsim qhov chaw tsis muaj rau lwm cov tshuaj moiety. Cov tshuaj formula rau pawg ua haujlwm no yog C3H5O-. Lub npe tshuaj rau pawg ua haujlwm no yog oxiran-1-ylmethyl pawg.
Epoxy Group yog dab tsi?
Epoxy pawg yog ib pab pawg ua haujlwm muaj cov qauv cyclic nrog cov tshuaj formula C2H3O-. Hauv pab pawg ua haujlwm no, muaj cov pa atom koom nrog ob lub pa roj carbon atom los ntawm ib qho kev sib cog lus (sigma bonds) ua ib lub nplhaib peb-tus tswv cuab epoxide. Cov tshuaj moiety no yog pab pawg ua haujlwm ntawm epoxides. Lub npe tshuaj IUPAC ntawm pawg no yog oxiranyl pawg.
Qhov txawv ntawm Oxirane Glycidyl thiab Epoxy pawg yog dab tsi?
Peb tuaj yeem paub qhov txawv ntawm oxiran, glycidyl pawg thiab epoxy pawg raws li lawv cov tshuaj reactivity. Qhov sib txawv tseem ceeb ntawm oxirane glycidyl thiab epoxy pawg yog tias oxirane yog cov tshuaj sib xyaw uas tsis tshua muaj tshwm sim thiab cov pab pawg glycidyl yog ib pab pawg ua haujlwm uas muaj qhov ua haujlwm rov ua haujlwm thaum pawg epoxy yog pab pawg ua haujlwm uas muaj kev sib piv ntau dua.
Cov hauv qab no infographic teev ntau qhov sib txawv ntawm oxirane glycidyl thiab epoxy pawg hauv daim ntawv.
Summary – Oxirane vs Glycidyl vs Epoxy Pawg
Peb tuaj yeem paub qhov txawv ntawm oxirane, glycidyl pawg thiab epoxy pawg raws li lawv cov tshuaj tiv thaiv. Lub sij hawm oxirane yog hais txog ethylene oxide, raws li lub ntsiab lus ntawm IUPAC. Qhov sib txawv tseem ceeb ntawm oxirane glycidyl thiab epoxy pawg yog tias oxirane yog cov tshuaj sib xyaw uas tsis tshua muaj tshwm sim thiab cov pab pawg glycidyl yog ib pab pawg ua haujlwm uas muaj qhov ua haujlwm rov ua haujlwm thaum pawg epoxy yog pab pawg ua haujlwm uas muaj kev sib piv ntau dua.
