Imikhiqizo
Isebenza ngokukhethekile ekukhiqizeni utshwala be-propargyl, i-1,4 butynediol kanye ne-3-chloropropyne
I-Propargyl izokwenziwa i-polymerize futhi iqhume
Inqubo yokuqala isuselwe ku-propargyl alcohol njenge-solvent, i-KOH njengesisekelo, ukusabela kokushisisa ukuze kutholwe okuhlosiwe.Ukusabela ngaphandle kwezimo ze-solvent dilution kuzoba ukungcola okuncane, ukusabela kuhlanzekile.
Uma kucatshangelwa i-polymerization enamandla engase ibe khona kanye nokubola okuqhumayo kwama-alkynes etheminali, I-Amgen's Hazard Evaluation Lab (HEL) yangenela ukuze yenze ukuhlola kokuphepha futhi isize ekuthuthukiseni inqubo ngaphambi kokukala kuze kufike kumalitha angu-2 okusabela.
Ukuhlolwa kwe-DSC kukhombisa ukuthi ukusabela kuqala ukubola ku-100 ° C futhi kukhulule amandla angama-3667 J/g, kuyilapho i-propargyl alcohol ne-KOH ndawonye, nakuba amandla ehla aze afike ku-2433 J/g, kodwa izinga lokushisa lokubola nalo lehla liye ku-85 ° C, futhi izinga lokushisa lenqubo lisondele kakhulu ku-60 °C, ingozi yokuphepha inkulu.
Ukulungiswa kwe-Yoshida kwasetshenziswa ukubala idatha ye-DSC, futhi imiphumela ibonisa ukuthi kokubili izixazululo zotshwala be-propargyl ne-potassium hydroxide ziyazwela futhi ziyaqhuma.
Ukwehla kwe-Kinetic kusetshenziswa i-AKTS kukhiphe i-TD24 ye-73.5 °C yotshwala obumsulwa be-propargyl kanye no-45.9 °C ngesixazululo sayo esingu-3 M KOH.Ngakho-ke, uhlelo alufanele ukukhuliswa.
Hlola futhi isixazululo sokusabela nge-ARC, ukukhululwa okuncane kokushisa ku-46 °C, ukukhuphuka kwezinga lokushisa kwe-adiabatic okungu-6 °C, kufanele kube ukukhululwa kokushisa okuqondiwe kokusabela.Ku-76 °C, kube khona ukushisa okunamandla nokukhishwa kwegesi, okubangele ngokuqondile ithangi lokuhlola ukuthi liqhume.Kuphinde kuboniswe ukuthi ukusabela akufanelekile ukukhuliswa.
I-HEL nethimba bacubungule ukuguqulwa kwesisekelo, kodwa ukuhlolwa kwe-DSC kwabonisa ukuthi ngisho nokuba khona kwesisekelo kwehlisa izinga lokushisa lokubola kwe-propargyl alcohol.
Ukuhlolwa kokuhlola kusetshenziswa i-alkali kubonise ukuthi ukusabela kwe-KOH bekukuhle.Ukuhlolwa kabusha kwezincibilikisi kwabonisa ukuthi i-dioxane yayiwukusabela okungcono.Ukuhlolwa kwe-ARC kubonise ukuthi ngemva kokusabela okushisayo kokusabela okuqondiwe, izinga lokushisa laqhubeka likhuphuka laya ku-200 °C futhi namanje akukho ukubola okunamandla okutholakele.Lesi simo singakhushulwa ngokuphepha.
