1,3-propanediol thiab 1,2-propanediol yog ob qho tib si organic compounds nyob rau hauv chav kawm ntawm diols, uas txhais tau hais tias lawv muaj ob pawg hydroxyl (-OH) ua haujlwm.Txawm hais tias lawv cov qauv zoo sib xws, lawv nthuav tawm cov khoom sib txawv thiab muaj cov kev siv sib txawv vim qhov kev npaj ntawm cov pab pawg ua haujlwm hauv lawv cov qauv molecular.
1,3-propanediol, feem ntau abbreviated li 1,3-PDO, muaj cov tshuaj formula C3H8O2.Nws yog ib qho tsis muaj xim, tsis muaj ntxhiab, thiab saj tsis qab kua hauv chav sov.Qhov sib txawv tseem ceeb hauv nws cov qauv yog tias ob pawg hydroxyl yog nyob ntawm cov pa roj carbon atoms uas sib cais los ntawm ib qho atom carbon.Qhov no muab 1,3-PDO nws cov khoom tshwj xeeb.
Cov khoom thiab kev siv ntawm 1,3-Propanediol:
Solvent:1,3-PDO yog ib qho tseem ceeb hnyav rau ntau yam polar thiab nonpolar compounds vim nws cov qauv tshuaj tshwj xeeb.
Antifreeze:Nws feem ntau yog siv los ua cov tshuaj tiv thaiv kab mob hauv kev siv tsheb thiab kev lag luam vim nws muaj qhov qis qis dua dej.
Polymer Production: 1,3-PDO yog siv rau hauv kev tsim cov biodegradable polymers zoo li polytrimethylene terephthalate (PTT).Cov biopolymers no muaj kev siv hauv textiles thiab ntim khoom.
1,2-Propanediol:
1,2-propanediol, tseem hu ua propylene glycol, muaj cov tshuaj formula C3H8O2 ib yam nkaus.Qhov sib txawv tseem ceeb yog tias nws ob pawg hydroxyl nyob ntawm cov pa roj carbon atoms uas nyob ib sab hauv lub molecule.
Cov khoom thiab kev siv ntawm 1,2-Propanediol (Propylene Glycol):
Antifreeze thiab Deicing Agent: propylene glycol feem ntau yog siv los ua cov tshuaj tua kab mob hauv kev ua zaub mov, cua sov, thiab cua txias.Nws kuj tseem siv los ua tus neeg sawv cev deicing rau aircraft.
Humectant:Nws yog siv nyob rau hauv ntau yam tshuaj pleev ib ce thiab tu tus kheej cov khoom raws li ib tug humectant kom khaws noo noo.
Khoom noj khoom haus Additive:Propylene glycol raug cais raws li "feem ntau lees paub tias muaj kev nyab xeeb" (GRAS) los ntawm US Food and Drug Administration (FDA) thiab yog siv los ua cov khoom noj ntxiv, feem ntau yog cov nqa khoom rau cov khoom noj thiab xim hauv kev lag luam khoom noj.
Pharmaceuticals:Nws yog siv nyob rau hauv qee cov tshuaj formulations ua ib qho hnyav thiab cov cab kuj rau cov tshuaj.
Hauv cov ntsiab lus, qhov sib txawv tseem ceeb ntawm 1,3-propanediol thiab 1,2-propanediol nyob rau hauv kev npaj ntawm lawv pawg hydroxyl nyob rau hauv cov qauv molecular.Cov txheej txheem sib txawv no ua rau cov khoom sib txawv thiab ntau hom kev siv rau ob lub diols, nrog 1,3-propanediol siv hauv cov kuab tshuaj, tshuaj tiv thaiv kab mob, thiab biodegradable polymers, thaum 1,2-propanediol (propylene glycol) pom cov ntawv thov hauv tshuaj tiv thaiv, khoom noj khoom haus, tshuaj pleev ib ce. , thiab pharmaceuticals.
Post lub sij hawm: Sep-20-2023