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Iimveliso

Ubungcali kwimveliso yotywala bepropargyl, 1,4 butynediol kunye ne-3-chloropropyne

I-Propargyl iya ku polymerize kwaye iqhume Umfanekiso okhoyo
  • I-Propargyl iya kupholisa kwaye iqhume

I-Propargyl iya kupholisa kwaye iqhume

Inkcazelo emfutshane:

Inkqubo yokuqala isekelwe kwi-propargyl alcohol njenge-solvent, i-KOH njengesiseko, ukusabela kokufudumeza ukufumana injongo.Ukusabela ngaphandle kweemeko zokuhlanjululwa kwe-solvent kuya kuba bubumdaka obuncinci, ukusabela kucocekile.

Ukuqwalasela i-polymerization ye-catalytic enokubakho kunye nokuqhuma kwe-alkynes ye-terminal, i-Amgen's Hazard Evaluation Lab (HEL) ingenelele ukwenza uvavanyo lokhuseleko kwaye incedise ekuphuculeni inkqubo ngaphambi kokunyusa ukuya kwiilitha ezi-2 zokusabela.

Uvavanyo lwe-DSC lubonisa ukuba i-reaction iqala ukubola kwi-100 ° C kwaye ikhulule i-3667 J / g amandla, ngelixa i-propargyl alcohol kunye ne-KOH kunye, nangona amandla ehla ukuya kwi-2433 J / g, kodwa iqondo lokushisa lokubola liyehla kwi-85 ° C, kwaye ubushushu benkqubo busondele kakhulu kwi-60 °C, umngcipheko wokhuseleko mkhulu.


Iinkcukacha zeMveliso

Iithegi zeMveliso

Inkqubo yokuqala isekelwe kwi-propargyl alcohol njenge-solvent, i-KOH njengesiseko, ukusabela kokufudumeza ukufumana injongo.Ukusabela ngaphandle kweemeko zokuhlanjululwa kwe-solvent kuya kuba bubumdaka obuncinci, ukusabela kucocekile.

Ukuqwalasela i-polymerization ye-catalytic enokubakho kunye nokuqhuma kwe-alkynes ye-terminal, i-Amgen's Hazard Evaluation Lab (HEL) ingenelele ukwenza uvavanyo lokhuseleko kwaye incedise ekuphuculeni inkqubo ngaphambi kokunyusa ukuya kwiilitha ezi-2 zokusabela.

Uvavanyo lwe-DSC lubonisa ukuba i-reaction iqala ukubola kwi-100 ° C kwaye ikhulule i-3667 J / g amandla, ngelixa i-propargyl alcohol kunye ne-KOH kunye, nangona amandla ehla ukuya kwi-2433 J / g, kodwa iqondo lokushisa lokubola liyehla kwi-85 ° C, kwaye ubushushu benkqubo busondele kakhulu kwi-60 °C, umngcipheko wokhuseleko mkhulu.

I-Propargyl iya kupholisa kwaye iqhume2

ULuleko lwe-Yoshida lusetyenzisiwe ukubala idatha ye-DSC, kwaye iziphumo zibonisa ukuba zozibini izisombululo ze-propargyl utywala kunye ne-potassium hydroxide zibuthathaka kwaye ziyaqhuma.

I-Propargyl iya kupholisa kwaye iqhume3

Ukunciphisa i-Kinetic usebenzisa i-AKTS kuvelise i-TD24 ye-73.5 °C ye-propargyl ecocekileyo yotywala kunye ne-45.9 °C kwisisombululo sayo se-3 M KOH.Ngoko ke, inkqubo ayifanelekanga ukukhulisa.

Vavanya ngakumbi isisombululo sokusabela nge-ARC, ukukhutshwa kobushushu obuncinci kwi-46 °C, ukunyuka kobushushu be-adiabatic nge-6 °C, kufuneka kube yinjongo yokukhululwa kobushushu.Kwi-76 °C, bekukho ubushushu obunamandla kunye nokukhutshwa kwegesi, okubangele ngokuthe ngqo itanki yovavanyo ukuba iqhume.Kwakhona kuboniswa ukuba impendulo ayifanelekanga ukukhulisa.

I-Propargyl iya kupholisa kwaye iqhume4

I-HEL kunye neqela baqwalasele utshintsho olusisiseko, kodwa iimvavanyo ze-DSC zabonisa ukuba kwanobukho besiseko behlise ubushushu bokubola kotywala bepropargyl.

I-Propargyl iya kupholisa kwaye iqhume5

Uvavanyo lokuhlola usebenzisa i-alkali lubonise ukuba impendulo ye-KOH yayilungile.Ukuhlolwa kwakhona kwezinyibilikisi kubonise ukuba i-dioxane yayiyindlela engcono yokusabela.Iimvavanyo ze-ARC zibonise ukuba emva kokusabela kwe-exothermic yendlela ekujoliswe kuyo, ubushushu buqhubekile nokunyuka ukuya kuma-200 °C kwaye akukabikho ukubola kumandla kufunyenweyo.Le meko inokunyuswa ngokukhuselekileyo.

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