Uhlalutyo lweNdawo yokuBilisa ye-Ethyl Acetate: Iipropati eziSisiseko kunye neMiba echaphazelayo
I-Ethyl Acetate (EA) yinto eqhelekileyo yezinto eziphilayo ezinoluhlu olubanzi lwezicelo. Idla ngokusetyenziswa njengesinyibilikisi, isiqholo kunye nesongezo sokutya, kwaye ithandwa ngenxa yokuguquguquka kwayo kunye nokhuseleko oluhambelanayo. Ukuqonda iimpawu ezisisiseko kunye nezinto ezichaphazela indawo yokubilisa ye-ethyl acetate ibalulekile ekusebenziseni kwayo kwimveliso yoshishino.
IiPropati zoMzimba eziSisiseko ze-Ethyl Acetate
I-Ethyl acetate lulwelo olungenambala kunye nevumba elimnandi njengesiqhamo. Ine-formula ye-molecular C₄H₈O₂ kunye ne-molecular weight ye-88.11 g / mol. Indawo yokubilisa ye-ethyl acetate yi-77.1 ° C (350.2 K) kuxinzelelo lwe-atmospheric. Le ndawo yokubilisa yenza kube lula ukuphuphuma kwiqondo lobushushu begumbi, iyenze ilungele ukusetyenziswa kwiimeko ezahlukeneyo zokusetyenziswa apho kufuneka ukuphuphuma komphunga ngokukhawuleza.
Izinto ezichaphazela indawo yokubilisa ye-ethyl acetate

Isiphumo soxinzelelo lwangaphandle:

Indawo yokubilisa ye-ethyl acetate inxulumene ngokusondeleyo noxinzelelo lwe-ambient. Kuxinzelelo oluqhelekileyo lwe-atmospheric, indawo yokubilisa ye-ethyl acetate yi-77.1°C. Nangona kunjalo, njengoko uxinzelelo luyancipha, indawo yokubilisa iyancipha ngokufanelekileyo. Le propati ibaluleke kakhulu kwizicelo zoshishino, ngokukodwa kwi-vacuum distillation, apho indawo yokubilisa ye-ethyl acetate ingancitshiswa kakhulu, ngaloo ndlela ichaphazela ukusebenza kakuhle kwenkqubo yokwahlula kunye nokucoca.

Isiphumo sobunyulu kunye nomxube:

Ukucoceka kwe-ethyl acetate nako kunefuthe kwindawo yokubilisa. Ucoceko oluphezulu lwe-ethyl acetate inendawo yokubilisa ezinzileyo enokuthi itshintshe xa ixutywe nezinye izinyibilikisi okanye iikhemikhali. I-phenomenon ye-azeotropy yemixube ngumzekelo oqhelekileyo, apho imilinganiselo ethile ye-ethyl acetate exutywe namanzi yenza umxube kunye nenqaku elithile le-azeotropic, ebangela ukuba umxube uphuke kunye kuloo bushushu.

Unxibelelwano phakathi kweemolekyuli:

Ukusebenzisana kwe-intermolecular, okufana ne-hydrogen bonding okanye i-van der Waals forces, iyancipha kwi-ethyl acetate kodwa isenempembelelo efihlakeleyo kwindawo yokubilisa. Ngenxa yesakhiwo seqela le-ester kwi-molecule ye-ethyl acetate, i-intermolecular van der Waals imikhosi incinci, ibangela indawo ephantsi yokubilisa. Ngokwahlukileyo koko, izinto ezinonxibelelwano olunamandla phakathi kweemolekyuli zihlala zineendawo zokubilisa eziphezulu.

Indawo yokubilisa ye-ethyl acetate kwishishini

I-Ethyl acetate inendawo yokubilisa ye-77.1 ° C, ipropati ekhokelela ekusetyenzisweni kwayo ngokubanzi njenge-solvent kwishishini lemichiza, ngokukodwa kwimveliso yepeyinti, i-coatings kunye ne-adhesives. Iqondo layo eliphantsi lokubilisa livumela i-ethyl acetate ukuba ikhuphe ngokukhawuleza, ibonelele ukunyibilika okulungileyo kunye nokulula ukuphatha. Kwishishini lamachiza, i-ethyl acetate isetyenziselwa ukutsalwa kunye nokuhlanjululwa kwezinto eziphilayo, njengoko indawo yayo yokubilisa ephakathi ivumela ukuhlukana ngokufanelekileyo kwezinto ezijoliswe kuzo kunye nokungcola.

Ukushwankathela

Ukuqonda indawo yokubilisa ye-ethyl acetate kunye nezinto ezichaphazelayo kubalulekile kwimveliso kunye nokusetyenziswa kwishishini lemichiza. Ngokulawula ngokufanelekileyo uxinzelelo lwe-ambient, ukulawula ukucoceka kwezinto eziphathekayo, kunye nokuqwalasela ukusebenzisana kwe-intermolecular, ukusebenza kakuhle kokusetyenziswa kwe-ethyl acetate kunokulungiswa ngokufanelekileyo. Inyaniso yokuba i-ethyl acetate inendawo yokubilisa ye-77.1 ° C yenza ukuba i-solvent ebalulekileyo kunye nephakathi kwizicelo ezininzi zoshishino.