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

I-Propylene glycol iyinto ovame ukuyibona ohlwini lwezithako zezimonyo zokusetshenziswa kwansuku zonke. Ezinye zibhalwe ngokuthi yi-1,2-propanediol kanti ezinye zibhalwe ngokuthi1,3-propanediol, ngakho-ke umehluko uyini?
I-1,2-Propylene glycol, i-CAS No. 57-55-6, ifomula yama-molecule C3H8O2, iyi-reagent yamakhemikhali, exutshwa namanzi, i-ethanol kanye nezinyibilikisi eziningi eziphilayo. Iwuketshezi oluqinile olungenambala olusesimweni esijwayelekile, cishe olungenaphunga futhi olumnandi kancane uma lunuka kahle.
Ingasetshenziswa njenge-ejenti yokumanzisa ezimonyweni, e-toothpaste nasensipheni kanye ne-glycerin noma i-sorbitol. Isetshenziswa njenge-ejenti yokumanzisa nokulinganisa ezidayini zezinwele kanye ne-ejenti yokuvimbela ukuqandisa.
1,3-Propylenei-glycol, i-CAS No. 504-63-2, ifomula yama-molecule yi-C3H8O2, iwuketshezi oluqinile olungenambala, olungenaphunga, olunosawoti, olune-hygroscopic, lungaxutshwa, luxutshwe, luxutshwe namanzi, luxutshwe ku-ethanol, i-ether.
Ingasetshenziswa ekuhlanganiseni izinhlobo eziningi zemithi, i-polyester PTT entsha, izinto ezisetshenziswa emithini kanye nama-antioxidants amasha. Iwumkhiqizo wokukhiqiza i-polyester engagcwali, i-plasticizer, i-surfactant, i-emulsifier kanye ne-emulsion breaker.
Zombili zinefomula efanayo yama-molecule futhi ziyi-isomers.
I-1,2-Propylene glycol isetshenziswa njenge-ejenti yokulwa namagciwane noma i-promoter yokungena ezimonyweni ngezinga eliphezulu.
Uma ingaphansi kwamazinga aphansi, ngokuvamile isetshenziswa njengesithambisi noma isiza sokuhlanza.
Uma kugxilwe kakhulu, ingasetshenziswa njenge-pro-solvent yezithako ezisebenzayo.
Ukucasuka kwesikhumba kanye nokuphepha kwamazinga ahlukene kuhluke ngokuphelele.
I-1,3-Propylene glycol isetshenziswa kakhulu njengesinyibilikisi ezimonyweni. Iyisinyibilikisi esinomswakama se-polyol esingokwemvelo esisiza izithako zezimonyo ukuthi zingene esikhumbeni.
Inamandla aphezulu okuthambisa isikhumba kune-glycerin, i-1,2-propanediol kanye ne-1,3-butanediol. Ayinamatheli, ayinawo umuzwa wokusha, futhi ayinazo izinkinga zokucasuka.
Izindlela eziyinhloko zokukhiqiza ze-1,2-propanediol yilezi:
1. Indlela yokumanzisa i-propylene oxide;
2. Indlela ye-propylene eqondile yokuxilisa i-catalytic;
3. Indlela yokushintshana kwe-Ester; 4. indlela yokwenziwa kwe-glycerol hydrolysis.
I-1,3-Propylene glycol ikhiqizwa kakhulu yi:
1. Indlela yamanzi ye-Acrolein;
2. Indlela ye-ethylene oxide;
3. Indlela yokwenziwa kwe-Glycerol hydrolysis;
4. Indlela ye-microbiological.
I-1,3-Propylene glycol ibiza kakhulu kune-1,2-Propylene glycol.1,3-PropyleneI-glycol iyinkimbinkimbi kancane ukuyikhiqiza futhi inesivuno esiphansi, ngakho-ke intengo yayo isephezulu.
Kodwa-ke, ulwazi oluthile lubonisa ukuthi i-1,3-propanediol ayicasuli kakhulu futhi ayicasuli kakhulu esikhumbeni kune-1,2-propanediol, ifinyelela ngisho nasezingeni lokungaphenduli kahle.
Ngakho-ke, eminyakeni yamuva nje, abanye abakhiqizi bashintshe i-1,2-propanediol nge-1,3-propanediol ezithakweni zobuhle ukuze banciphise ukungakhululeki okungase kwenzeke esikhumbeni.
Ukungakhululeki kwesikhumba okubangelwa izimonyo kungase kungabangelwa yi-1,2-propanediol noma i-1,3-propanediol yodwa, kodwa kungabangelwa yizinto ezahlukahlukene. Njengoba umbono wabantu ngempilo nokuphepha kwezimonyo ujula, isidingo esikhulu semakethe sizokhuthaza abakhiqizi abaningi ukuba bathuthukise imikhiqizo engcono ukuze bahlangabezane nezidingo zeningi labathandi bobuhle!