Umehluko phakathi kwe-1,3 propanediol kanye ne-1,2 propanediol

I-1,3-propanediol kanye ne-1,2-propanediol zombili ziyizakhi eziphilayo eziyingxenye yesigaba sama-diol, okusho ukuthi zinamaqembu amabili asebenzayo e-hydroxyl (-OH). Naphezu kokufana kwazo kwesakhiwo, zibonisa izakhiwo ezahlukene futhi zinezinhlelo zokusebenza ezihlukile ngenxa yokuhlelwa kwala maqembu asebenzayo ngaphakathi kwezakhiwo zawo zama-molecule. 

1,3-Propanediol:

I-1,3-propanediol, evame ukufushaniswa ngokuthi i-1,3-PDO, inefomula yamakhemikhali i-C3H8O2. Iwuketshezi olungenambala, olungenaphunga, nolungenambitheki ekushiseni kwegumbi. Umehluko oyinhloko esakhiweni sayo ukuthi amaqembu amabili e-hydroxyl atholakala kuma-athomu e-carbon ahlukaniswe yi-athomu eyodwa ye-carbon. Lokhu kunikeza i-1,3-PDO izakhiwo zayo ezihlukile.

Izakhiwo kanye nokusetshenziswa kwe-1,3-Propanediol:

Isinyibilikisi:I-1,3-PDO iyisithako esiwusizo samakhemikhali ahlukahlukene e-polar kanye ne-nonpolar ngenxa yesakhiwo sayo samakhemikhali esiyingqayizivele.

Isivikelo sokuqandisa:Ivame ukusetshenziswa njenge-ejenti yokulwa nokuqandisa ezimotweni nasezimbonini ngoba inezinga eliphansi lokuqandisa kunamanzi.

Ukukhiqizwa kwe-Polymer: I-1,3-PDO isetshenziswa ekukhiqizweni kwama-polymer abola njenge-polytrimethylene terephthalate (PTT). Lawa ma-biopolymer anezicelo ezindwangu nasekupakishweni.

1,2-Propanediol:

I-1,2-propanediol, eyaziwa nangokuthi i-propylene glycol, nayo inefomula yamakhemikhali i-C3H8O2. Umehluko oyinhloko ukuthi amaqembu ayo amabili e-hydroxyl atholakala kuma-athomu e-carbon aseduze ngaphakathi kwe-molecule.

Izakhiwo kanye nokusetshenziswa kwe-1,2-Propanediol (Propylene Glycol):

I-Antifreeze kanye ne-Deicing Agent: I-Propylene glycol ivame ukusetshenziswa njenge-antifreeze ezinhlelweni zokucubungula ukudla, ukufudumeza, kanye nokupholisa. Iphinde isetshenziswe njenge-ejenti ye-deicing yezindiza.

I-Humectant:Isetshenziswa emikhiqizweni ehlukahlukene yokunakekelwa kwezimonyo kanye neyomuntu siqu njenge-humectant yokugcina umswakama.

Isengezo Sokudla:I-Propylene glycol ihlukaniswa ngokuthi "ivame ukuqashelwa njengephephile" (GRAS) yi-US Food and Drug Administration (FDA) futhi isetshenziswa njengesithako sokudla, ikakhulukazi njengesithwali sezinongo nemibala embonini yokudla.

Imithi:Isetshenziswa kwezinye izinhlobo zemithi njengesinyibilikisi kanye nesithwali semithi.

Ngamafuphi, umehluko oyinhloko phakathi kwe-1,3-propanediol kanye ne-1,2-propanediol usekuhlelweni kwamaqembu abo e-hydroxyl ngaphakathi kwesakhiwo sama-molecule. Lo mehluko wesakhiwo uholela ezimpahleni ezihlukile kanye nokusetshenziswa okuhlukahlukene kwala ma-diol amabili, lapho i-1,3-propanediol isetshenziswa ezincibilikisini, kuma-antifreeze, kanye nama-polymers abola, kuyilapho i-1,2-propanediol (i-propylene glycol) ithola ukusetshenziswa ekuncibilikiseni, ekudleni, ezimonyweni, kanye nasemithini yezokwelapha.