Umahluko phakathi kwe-1,3 propanediol kunye ne-1,2 propanediol

I-1,3-propanediol kunye ne-1,2-propanediol zombini ziikhompawundi ze-organic ezikwiklasi yee-diols, oko kuthetha ukuba zinamaqela amabini asebenzayo e-hydroxyl (-OH). Nangona zifana ngesakhiwo, zibonisa iipropati ezahlukeneyo kwaye zinezicelo ezahlukeneyo ngenxa yokulungelelaniswa kwala maqela asebenzayo ngaphakathi kwezakhiwo zawo ze-molecular. 

I-1,3-Propanediol:

I-1,3-propanediol, edla ngokufinyezwa njenge-1,3-PDO, inefomyula yekhemikhali i-C3H8O2. Lulwelo olungenambala, olungenavumba, nolungenancasa kubushushu begumbi. Umahluko ophambili kwisakhiwo sayo kukuba amaqela amabini e-hydroxyl akwii-athomu zekhabhoni ezahlulwe yi-athomu enye yekhabhoni. Oku kunika i-1,3-PDO iipropati zayo ezikhethekileyo.

Iimpawu kunye nokusetyenziswa kwe-1,3-Propanediol:

Isinyibilikisi:I-1,3-PDO sisinyibilikisi esiluncedo kwiikhompawundi ezahlukeneyo ze-polar kunye ne-nonpolar ngenxa yesakhiwo sayo seekhemikhali esahlukileyo.

Isithinteli-qhwa:Isetyenziswa kakhulu njengesixhobo sokuthintela ukuqandisa kwiimoto nakwimizi-mveliso kuba inendawo yokuqandisa ephantsi kunamanzi.

Imveliso yePolymer: I-1,3-PDO isetyenziswa ekuvelisweni kweepolymers ezinokubola njenge-polytrimethylene terephthalate (PTT). Ezi biopolymers zisetyenziswa kwimpahla kunye nokupakisha.

I-1,2-Propanediol:

I-1,2-propanediol, ekwaziwa ngokuba yi-propylene glycol, nayo inefomyula yekhemikhali i-C3H8O2. Umahluko ophambili kukuba amaqela ayo amabini e-hydroxyl akwii-athomu zekhabhoni ezikufutshane ngaphakathi kwimolekyuli.

Iimpawu kunye nokusetyenziswa kwe-1,2-Propanediol (Propylene Glycol):

I-Antifreeze kunye ne-Deicing Agent: I-Propylene glycol isetyenziswa kakhulu njenge-antifreeze kwiinkqubo zokulungisa ukutya, zokufudumeza kunye nezokupholisa. Ikwasetyenziswa njenge-arhente ye-deicing kwiinqwelomoya.

I-Humectant:Isetyenziswa kwiimveliso ezahlukeneyo zokuthambisa nezokunyamekela umntu njenge-humectant yokugcina umswakama.

Isongezelelo sokutya:I-Propylene glycol ihlelwa njenge "eyaziwa ngokubanzi njengekhuselekileyo" (GRAS) yi-US Food and Drug Administration (FDA) kwaye isetyenziswa njengesongezelelo sokutya, ikakhulu njengesithwali seencasa kunye nemibala kwishishini lokutya.

Amayeza:Isetyenziswa kwezinye iindlela zamayeza njengesinyibilikisi kunye nomthwali wamayeza.

Ngamafutshane, umahluko ophambili phakathi kwe-1,3-propanediol kunye ne-1,2-propanediol ukwilungiselelo lamaqela azo e-hydroxyl ngaphakathi kwesakhiwo se-molecular. Lo mahluko wesakhiwo ukhokelela kwiipropati ezahlukeneyo kunye nokusetyenziswa okwahlukeneyo kwezi diols zimbini, apho i-1,3-propanediol isetyenziswa kwizinyibilikisi, kwi-antifreeze, nakwii-polymers ezinokubola, ngelixa i-1,2-propanediol (propylene glycol) ifumana ukusetyenziswa kwi-antifreeze, ukutya, izinto zokuthambisa, kunye namayeza.