Ukunyibilika kwe-Ethyl cellulose kwi-acetone

I-Ethyl cellulose yipolymer esetyenziswa ngokubanzi kumashishini ahlukeneyo, kubandakanya amayeza, ukutya, kunye nokhathalelo lomntu. Iyaziwa ngeempawu zayo ezibalaseleyo zokwenza ifilimu, ukuhambelana okuphezulu kunye nezinye izinto, kunye nokumelana kakuhle neekhemikhali kunye nezinto zokusingqongileyo. Enye yezinto eziphambili ze-ethyl cellulose kukunyibilika kwayo, okunokwahluka ngokuxhomekeke kwi-solvent esetyenzisiweyo.

I-acetone yi-solvent eqhelekileyo esetyenziswa rhoqo kwimveliso yeefilimu ze-ethyl cellulose kunye neengubo. I-Ethyl cellulose inyibilika ngokuyinxenye kwi-acetone, okuthetha ukuba inokunyibilika ukuya kumlinganiselo othile kodwa ayinakunyibilika ngokupheleleyo. Iqondo lokunyibilika kwe-ethyl cellulose kwi-acetone ixhomekeke kwizinto ezahlukeneyo ezinjengobunzima bemolekyuli, iqondo le-ethoxylation, kunye nokuxinana kwepolymer.

Ngokubanzi, ubunzima bemolekyuli ephezulu ye-ethyl cellulose ithande ukunyibilika kancinci kwi-acetone xa kuthelekiswa nobunzima bemolekyuli ethyl cellulose. Oku kungenxa yokuba iipolima ezinobunzima obuphezulu bemolekyuli zineqondo eliphezulu lepolymerization, nto leyo ekhokelela kulwakhiwo oluntsonkothileyo nolupakishwe ngokuqinileyo oluxhathisayo ngakumbi ekusonjululweni. Ngokufanayo, i-ethyl cellulose eneqondo eliphezulu le-ethoxylation ithande ukunyibilika kancinci kwi-acetone ngenxa yokwanda kwe-hydrophobicity yepolymer.

Ukunyibilika kwe-ethyl cellulose kwi-acetone nako kunokuchaphazeleka kukuxinana kwepolymer kwi-solvent. Kwiindawo ezisezantsi, i-ethyl cellulose inokwenzeka ukuba inyibilike kwi-acetone, ngelixa kwiindawo eziphezulu, ukunyibilika kunokuncipha. Oku kubangelwa kukuba kwiindawo eziphezulu, iimolekyuli ze-ethyl cellulose ziyakwazi ukusebenzisana enye kwenye, zenza uthungelwano lwamakhonkco e-polymer anganyibiliki kakhulu kwi-solvent.

I-solubility ye-ethyl cellulose kwi-acetone inokunyuswa ngokongezwa kwezinye izinyibilikisi okanye iiplastiki. Ngokomzekelo, ukongezwa kwe-ethanol okanye i-isopropanol kwi-acetone kunokunyusa ukunyibilika kwe-ethyl cellulose ngokuphazamisa ukusebenzisana kwe-intermolecular phakathi kwamaketanga e-polymer. Ngokufanayo, ukongezwa kweeplasticizers ezifana ne-triethyl citrate okanye i-dibutyl phthalate kunokunyusa ukunyibilika kwe-ethyl cellulose ngokunciphisa amandla e-intermolecular phakathi kwamakhonkco e-polymer.

Isishwankathelo, i-ethyl cellulose inyibilika ngokuyinxenye kwi-acetone, kwaye ukunyibilika kwayo kunokwahluka ngokuxhomekeke kwizinto ezahlukeneyo ezinjengobunzima bemolekyuli, idigri ye-ethoxylation, kunye nokuxinana kwepolymer. I-solubility ye-ethyl cellulose kwi-acetone inokunyuswa ngokongezwa kwezinye izinyibilikisi okanye i-plasticizers, iyenze i-polymer eguquguqukayo yokusetyenziswa kwizicelo ezahlukeneyo.