Qhov sib txawv ntawm 1,3 propanediol thiab 1,2 propanediol

1,3-propanediol thiab 1,2-propanediol yog ob qho tib si organic compounds uas koom nrog pawg diols, uas txhais tau tias lawv muaj ob pawg hydroxyl (-OH). Txawm hais tias lawv cov qauv zoo sib xws, lawv qhia txog cov khoom sib txawv thiab muaj cov ntawv thov sib txawv vim yog qhov kev teeb tsa ntawm cov pawg ua haujlwm no hauv lawv cov qauv molecular. 

1,3-Propanediol:

1,3-propanediol, feem ntau hu ua 1,3-PDO, muaj cov mis tshuaj C3H8O2. Nws yog cov kua tsis muaj xim, tsis muaj ntxhiab, thiab tsis muaj saj ntawm chav tsev kub. Qhov sib txawv tseem ceeb hauv nws cov qauv yog tias ob pawg hydroxyl nyob ntawm cov pa roj carbon uas sib cais los ntawm ib lub pa roj carbon. Qhov no muab 1,3-PDO nws cov khoom tshwj xeeb.

Cov Khoom thiab Daim Ntawv Thov ntawm 1,3-Propanediol:

Cov kuab tshuaj:1,3-PDO yog cov kuab tshuaj uas muaj txiaj ntsig zoo rau ntau yam polar thiab nonpolar compounds vim nws cov qauv tshuaj tshwj xeeb.

Tshuaj tiv thaiv kev khov:Nws feem ntau siv ua tus neeg sawv cev antifreeze hauv kev siv tsheb thiab kev lag luam vim nws muaj qhov chaw khov qis dua dej.

Kev Tsim Khoom Polymer: 1,3-PDO yog siv rau hauv kev tsim cov polymers biodegradable xws li polytrimethylene terephthalate (PTT). Cov biopolymers no muaj daim ntawv thov hauv textiles thiab ntim khoom.

1,2-Propanediol:

1,2-propanediol, tseem hu ua propylene glycol, muaj cov tshuaj mis C3H8O2 thiab. Qhov sib txawv tseem ceeb yog tias nws ob pawg hydroxyl nyob rau ntawm cov pa roj carbon sib ze hauv lub molecule.

Cov Khoom thiab Daim Ntawv Thov ntawm 1,2-Propanediol (Propylene Glycol):

Tshuaj tua kab mob thiab tshuaj tua cov kua nplaum: Propylene glycol feem ntau siv ua tshuaj tua kab mob hauv kev ua zaub mov, cua sov, thiab cua txias. Nws kuj tseem siv ua tshuaj tua cov kua nplaum rau dav hlau.

Cov tshuaj ua kom noo:Nws siv rau hauv ntau yam khoom siv pleev kom zoo nkauj thiab khoom siv tu tus kheej ua ib qho humectant kom khaws cov dej noo.

Cov Khoom Noj Khoom Haus Ntxiv:Propylene glycol raug cais ua "generally recognizable as safe" (GRAS) los ntawm US Food and Drug Administration (FDA) thiab siv ua cov khoom noj khoom haus ntxiv, feem ntau yog cov khoom siv rau cov saj thiab xim hauv kev lag luam zaub mov.

Cov Tshuaj:Nws siv rau hauv qee cov tshuaj formulations ua cov kuab tshuaj thiab cov cab kuj rau cov tshuaj.

Hauv kev xaus, qhov sib txawv tseem ceeb ntawm 1,3-propanediol thiab 1,2-propanediol yog nyob rau hauv kev npaj ntawm lawv cov hydroxyl pawg hauv cov qauv molecular. Qhov sib txawv ntawm cov qauv no ua rau muaj cov yam ntxwv sib txawv thiab ntau yam kev siv rau ob lub diols no, nrog rau 1,3-propanediol siv rau hauv cov kuab tshuaj, antifreeze, thiab cov polymers biodegradable, thaum 1,2-propanediol (propylene glycol) pom cov ntawv thov hauv antifreeze, khoom noj, tshuaj pleev ib ce, thiab tshuaj.