I-Polyanionic cellulose (i-PAC) iyi-polymer ngempela, ebalulekile ezimbonini ezihlukahlukene, ikakhulukazi ekumbizeni nasekuhloleni uwoyela. Ukuze siqonde ukubaluleka nezici ze-polyanionic cellulose, ake siqale ukuhlola ukwakheka kwayo, ukusetshenziswa, kanye nemithelela kuyo yonke imikhakha eyahlukene.
Emgogodleni wayo, i-polyanionic cellulose iphuma ku-cellulose, i-polymer eyenzeka ngokwemvelo etholakala ezindongeni zamaseli ezitshalo. I-Cellulose ngokwayo iyi-polysaccharide eyakhiwe amayunithi e-glucose axhunywe ndawonye ngamabhondi e-β(1→4) e-glycosidic. Leli lungiselelo linikeza i-cellulose amandla ayo okuyisici nokuqina, okuyenza ibe ingxenye ebalulekile yesakhiwo ezitshalweni. Kodwa-ke, izici ezingokwemvelo ze-cellulose zingashintshwa futhi zithuthukiswe ukuze zivumelane nezinhlelo zokusebenza ezihlukene zezimboni, okuholela ekuthuthukisweni kokuphuma kokunye okufana ne-polyanionic cellulose.
I-Polyanionic cellulose ihlanganiswa ngokuguqulwa kwamakhemikhali e-cellulose, lapho amaqembu e-hydroxyl (-OH) akhona ku-molecule ye-cellulose athathelwa indawo ngamaqembu e-carboxymethyl (-CH2COOH). Lokhu kuguqulwa kunikeza uhlamvu lwe-anionic kumgogodla we-cellulose, okuholela ku-polymer enezici ze-polyanionic. I-degree of substitution (DS) inquma izinga lokushintshwa kwe-carboxymethyl kumgogodla we-cellulose, okunomthelela kuzo zonke izakhiwo nokwenziwa kwe-polymer.
Okunye okubaluleke kakhulu ukusetshenziswa kwe-polyanionic cellulose kusembonini kawoyela negesi, ikakhulukazi oketshezini lokumba. Uketshezi lokumba, oluvame ukwaziwa ngokuthi udaka, lwenza izinjongo ezihlukahlukene ngesikhathi sokumba, okuhlanganisa ukuthambisa, ukupholisa, nokususwa kwemfucumfucu. I-Polyanionic cellulose yengezwa oketshezini lokumba njenge-viscosifier kanye ne-ejenti yokulawula ukulahlekelwa uketshezi.
Njenge-viscosifier, i-polyanionic cellulose idlulisela izici ze-rheological kuketshezi lokumba, ithuthukise ikhono lazo lokumisa ukusika kokumba kanye nokugcina ukuqina komthombo. Isisindo samangqamuzana aphezulu e-polymer kanye nemvelo ye-anionic iyivumela ukuthi yakhe isakhiwo senethiwekhi ngaphakathi koketshezi, okwandisa i-viscosity futhi ivimbele ukuwohloka noma ukuhlaliswa kwezinto eziqinile. Ngaphezu kwalokho, i-polyanionic cellulose ikhombisa ukubekezelela usawoti okuhle kakhulu, okuyenza ifanelekele ukusetshenziswa ezindaweni zokumba ezinosawoti omningi ezivamile emisebenzini yokumba ogwini.
Ngaphezu kwendima yayo njenge-viscosifier, i-polyanionic cellulose isebenza njenge-ejenti yokulawula ukulahlekelwa uketshezi emanzini okumba. Ngokwenza ikhekhe lesihlungi elincanyana, elingenakunyakaziswa odongeni lomthombo, i-polymer isiza ukunciphisa ukulahlekelwa koketshezi ekwakhekeni, ngaleyo ndlela igcine ukulawulwa kwengcindezi efanele futhi ivimbele ukulimala kokubunjwa. Lesi sakhiwo sibalulekile ekuthuthukiseni ukusebenza kahle kokubhola kanye nokunciphisa ubungozi bokusebenza.
Ngalé komkhakha kawoyela negesi, i-polyanionic cellulose ithola ukusetshenziswa kwezinye izimboni ezihlukahlukene, ezihlanganisa ezemithi, ukudla, nezimonyo. Ekwakhekeni kwemithi, isebenza njengesihlanganisi, i-disintegrant, noma isishintshi se-viscosity ekukhiqizeni amathebulethi kanye nokumiswa okwesikhashana ngomlomo. Embonini yokudla, i-polyanionic cellulose isetshenziswa njenge-ejenti ejiyayo, i-stabilizer, noma i-emulsifier emikhiqizweni esukela kumasoso nezindwangu zokugqoka kuya emikhiqizweni yobisi neziphuzo. I-biocompatibility yayo kanye nemvelo engenabo ubuthi iyenza ifanelekele ukusetshenziswa emikhiqizweni yokunakekelwa komuntu siqu njengamaloshini, okhilimu, nama-shampoos, lapho isebenza khona njenge-thiener noma i-ejenti elengayo.
I-Polyanionic cellulose ime njenge-polymer eguquguqukayo esebenza kabanzi kuzo zonke izimboni eziningi. Izakhiwo zayo eziyingqayizivele, ezitholakala ekuguqulweni kwe-cellulose, ziyenza ibaluleke kakhulu emikhakheni efana nowoyela negesi, ezemithi, ukudla, nezimonyo. Njengoba ucwaningo nentuthuko yezobuchwepheshe iqhubeka, ukusetshenziswa kwe-polyanionic cellulose kulindeleke ukuthi kwande ngokuqhubekayo, kube nomthelela ekwakhiweni okusha nokusebenza kahle emikhakheni eyahlukene.
Isikhathi sokuthumela: May-10-2024