Ukunyibilika kwe-Ethyl cellulose kwi-ethanol

I-Ethyl cellulose yipolymer eyenziweyo esetyenziswa rhoqo kumashishini ahlukeneyo, kubandakanya amayeza, ukutya, kunye nokhathalelo lomntu. Enye yezinto eziphambili ze-ethyl cellulose kukunyibilika kwayo kwii-solvents ezahlukeneyo, okubalulekileyo kwizicelo zayo ezahlukeneyo. I-Ethanol yenye yezinto ezinyibilikayo ezinokusetyenziselwa ukunyibilikisa i-ethyl cellulose.

Ukunyibilika kwe-ethyl cellulose kwi-ethanol kuxhomekeke kwizinto ezahlukeneyo ezifana neqondo le-ethylation, ubunzima bemolekyuli yepolymer, kunye nobushushu be-solvent. Ngokuqhelekileyo, i-ethyl cellulose eneqondo eliphezulu le-ethylation iyanyibilika ngakumbi kwi-ethanol xa kuthelekiswa nezo zinezinga eliphantsi le-ethylation. Ubunzima bemolekyuli bepolymer bukwadlala indima, njengoko iipolymers ezinobunzima obuphezulu bemolekyuli zinokufuna uxinzelelo oluphezulu lwe-ethanol okanye ixesha elide lokunyibilika.

Ubushushu be-solvent buchaphazela ukunyibilika kwe-ethyl cellulose kwi-ethanol. Amaqondo okushisa aphezulu anokunyusa ukunyibilika kwepolymer ngenxa yokunyuka kwamandla e-kinetic ye-solvent molecules, ezinokunceda ukudiliza amatyathanga e-polymer kunye nokuququzelela inkqubo yokuchithwa. Nangona kunjalo, iqondo lokushisa akufanele lidlule umda othile njengoko kunokubangela ukuba i-polymer ithobe okanye ilahlekelwe yintembeko yesakhiwo.

Ngokubanzi, i-ethyl cellulose ithathwa njengenyibilikayo ngakumbi kwi-ethanol xa kuthelekiswa nezinye izinyibilikisi eziqhelekileyo ezifana namanzi, i-methanol, kunye ne-acetone. I-Ethanol yi-solvent ye-polar, kwaye i-polarity yayo inokunceda ukudiliza iibhondi ze-hydrogen phakathi kwamakhonkco e-polymer, evumela ukuba i-polymer inyibilike.