I-Cellulose Afers iyisigaba samakhompiyutha e-polymer awethule i-Alkyl, Phenolic noma Amino Subsitituents kuma-molecule wemvelo we-cellulose ngokuguqulwa kwamakhembu. I-Cellulose, njenge-polymer yemvelo eningi kunazo zonke emhlabeni, ine-biodegradeating enhle nokusebenza kokuvikela imvelo. I-Cellulose Afers iyizinto ezibalulekile ezivela ku-cellulose. Ngenxa yokuzikhandla kwabo okuguqukayo, ukuqina nokunamathela okuhle, kusetshenziswa kabanzi emasimini okwakhiwa, izimonyo, ukudla nomuthi.
1. Ukwakheka kanye nezakhiwo ze-cellulose afes
I-Cellulose Afers yenziwa ngokusabela kwama-molecule we-cellulose ane-ejenti ethile ethetheshethe (efana ne-chlororoacetic acid, i-methyl chloride, njll.) Ngokuphendula kwe-etherifing. Uma kuqhathaniswa ne-cellulose yemvelo, ama-molecule e-cellulose ether aqukethe amaqembu ether (-O-), angashintsha izakhiwo zawo zomzimba nezamakhemikhali.
1.1 I-solubility yamanzi ne-solubility
I-Cellulose Tashers ine-soubelity enhle, ikakhulukazi emanzini nasezinhleleni ze-organic. I-solubelity yayo ithintekile kwabanye abathile. Isibonelo, i-methyl cellulose (MC) ne-HydroxyEthyl cellulose (HEC) ingakha isixazululo esifanayo emanzini, esilungele ukugqokwa okususelwa emanzini, ama-njr.
1.2 Umphumela wokuqina
I-Cellulose Tashers inemiphumela ebabazekayo emanzini futhi imvamisa isetshenziswa emikhiqizweni efana nezingubo, okokuhlanza, ukunamathela kanye nezimonyo. Indlela yayo yokuqina ixhomeke ku-hydration of cellulose amaketanga ama-molecular nama-spatial amaqembu ether. Ikakhulu, i-methyl cellulose (MC) neHydroxypropylll (HPMC) ingalungisa ngempumelelo ukubonwa kohlelo futhi yenza umkhiqizo uzinze ngesikhathi sokusebenzisa.
1.3 Ukuzwa kokushisa
I-Cellulose Afers ethile, efana ne-hydroxypropyllylylylyllose (HPMC), ingabe izinga lokushisa lizwakala futhi libonisa izinguquko ku-solubity, ukubonana nezinye izakhiwo ezishintsha okushintshiwe. Lezi zakhiwo zizenza zilusizo ngezikhathi ezikhethekile, njengama-colloids alawulwa amazinga okushisa, izinhlelo zokulethwa kwezidakamizwa kanye nezinye izinkambu.
1.4 Umsebenzi ongaphezulu
Izinhlobo ezithile ze-Cellulose Talers, ezinjenge-methyl cellulose (MC) neHydroxyyethyl cellulose (HEC), zingaphezulu kwenqubekela phambili ngezixazululo, zinganciphisa ukungezwani kwezixazululo futhi zibe nezindawo ezinhle ezimangazayo. Lokhu kubenza babe yizinto ezifanele ezivuthiwe ze-emulsion, amagwebu nokhilimu.
2. Izinhlobo eziyinhloko ze-cellulose afers
Kunezinhlobo eziningi ze-cellulose afer, futhi okuvamile kungokulandelayo:
2.1 methyl cellulose (MC)
I-methyl celtulose ingumkhiqizo owenziwe ngokusabela kwe-cellulose ne-methyl chloride, futhi uvame ukusetshenziswa ekukhulekeni, futhi kusetshenziswa, kusetshenziswa kabanzi ezimbonini ezinjengezimboni ezinjengokwakha, umuthi, izimonyo nokudla.
2.2 hydroxyethyl cellulose (HEC)
I-Hydroxyethyl cellulose yenziwa ngokusabela kwe-cellulose ne-chloroethanol. Ine-soubelity ephezulu kanye nezakhiwo eziqina futhi zisetshenziswa kabanzi egqoke izigqoko ezisuselwa emanzini nemikhiqizo yokunakekelwa komuntu. Uma kuqhathaniswa ne-methyl cellulose, i-hydroxyyethyl cellulose inomphumela oqinile wokuqina futhi ingathuthukisa ukusebenza kokwakhiwa kwezingubo ezisuselwa emanzini.
2.3 hydroxypropyllylyll methyl cellulose (HPMC)
Le yi-ether ye-cellulose esetshenziswa kabanzi emikhakheni yokwakha, ukumboza, umuthi, ukudla, njll. Yenziwa nge-methylation kanye ne-hydroxyproppylitation ukusabela, futhi ine-gel ebonakalayo emanzini, futhi ine-gelation kanye nemiphumela yokumiswa okuhle.
2.4 I-Ethyl Cellulose (EC)
I-Ethyl Cellulose iyi-molecule ye-cellulose eyethula amaqembu e-ethyl e-molecule ye-cellulose ngokusebenzisa ukusabela kokuthambisa futhi ine-hydrophopobicity eqinile. Inezicelo ezibalulekile ekukhishweni okulawulwa ngopende, ukumboza kanye nezidakamizwa.
3. Izinkambu zohlelo lokusebenza ze-cellulose afes
3.1 Imboni Yokwakha
Ukusetshenziswa kwe-cellulose Tashers embonini yezokwakha kuboniswa ikakhulukazi ku-cunmer udaka, izimbotshana zodonga kanye nodaka owomile njengama-sikhulu nezithasiselo zokuthuthukisa ukusebenza kokwakha. Kungathuthukisa ukusebenza kodaka, yehlise isikhathi sokusoma, ngcono ukumelana nokuqhekeka, futhi kuthuthukise ukunamathela kwezimbozo.
3.2 izimonyo
Ukusetshenziswa kwe-cellulose Tashers ku-cosmetics ikakhulukazi kubanzi, ama-emulsifiers kanye nokuzikhutha. Bangathuthukisa ukungaguquguquki komkhiqizo, bathuthukise umuzwa wokusebenzisa, bandise ukulayisha kwesikhumba, futhi bathuthukise ngempumelelo ukuqina komkhiqizo.
3.3 Ukudla
I-Cellulose Afers ivame ukusetshenziswa njengabakhulu, abaqinisi, ama-emulsifiers, njll ekudleni. Kungathuthukisa ukunambitheka, ukubonakala kanye nokuthungwa kokudla, ikakhulukazi ku-ayisikhilimu, i-jelly, isizini nokunye ukudla.
3.4 insimu yezemithi
Ensimini yezemithi, i-cellulose ether isetshenziselwa ikakhulukazi ukukhishwa okulawulwa kwezidakamizwa, ukubumba kwamathebulethi kanye nokulungiselela ukumiswa. Ukuqina kwalo okuhle nokunamathela kungakhipha kancane izidakamizwa emzimbeni futhi kwandise ukusebenza ngempumelelo.
4. Ukuvikelwa Kwezemvelo kanye nokusimama kwe-cellulose ether
I-Cellulose Ether iyi-polymer engonakalisi yemvelo ehlekisayo ngokusebenza okuhle kwemvelo. Ngemuva kokulahlwa, kungadilizwa ngokwemvelo ukunciphisa ukungcoliswa kwemvelo. Ngokwesimo sanamuhla esandayo esibaluleke kakhulu sokuvikelwa kwemvelo, i-cellulose ether, njengekhemikhali eluhlaza, kancane kancane kube yisengezo esithandwayo emikhiqizweni ehlukahlukene.
Njengesicelo se-polymer ngokusebenza okuhle kakhulu, i-ether ye-cellulose ithatha isikhundla esibalulekile emikhakheni eminingi efana nokwakha, izimonyo, ukudla, kanye nemithi ngenxa yamathemba awo abanzi nezici zemvelo ezinhle. Ngokuthuthuka kwesayensi nobuchwepheshe kanye nesidingo esandayo samakhemikhali aluhlaza, insimu yesicelo kanye namathemba emakethe we-cellulose ether izobanzi.
Isikhathi sePosi: Feb-14-2025