Izakhiwo kanye ne-Viscosity ye-CMC

I-Carboxymethylcelcelcellellulose (CMC) isengezo esisebenzayo esisetshenziswa kabanzi kwizimboni ezahlukahlukene ezinjengokudla, amakhamishini, ukuphazamiseka, izindwangu kanye nezimayini. Kuthathwe kusuka ku-cellulose yemvelo, okuchichima ezitshalweni nakwezinye izinto eziphilayo. I-CMC iyi-polymer esolulekayo enamanzi ahlukile kufaka phakathi i-viscosity, hydration, ukunamathela kanye nokunamathelisa.

Izici ze-CMC

I-CMC iyisisulu esisele se-cellulose esiguqulwa ngamakhemikhali ngokwazisa amaqembu e-carboxymethyl ehlelweni lwayo. Lokhu kuguqulwa kuthuthukisa i-solubity kanye ne-hydrophicility ye-cellulose, ngaleyo ndlela kuthuthukise ukusebenza. Izakhiwo ze-CMC zincike ekutheni zifakwe esikhundleni sazo (DS) kanye nesisindo se-molecular (MW). I-DS ichazwa njengenombolo ephakathi ye-carboxymethyl Amaqembu ngeyunithi ye-glucose ku-cellulose backbone, kuyilapho i-MW ibona usayizi nokusabalalisa amaketanga we-polymer.

Enye yezinto ezibalulekile ze-CMC yi-solubility yayo yamanzi. I-CMC ingena kalula emanzini, yakha isisombululo esibonakalayo nge-Pseudoplastic Properties. Lokhu kuziphatha kwe-Rheological kuphumela ekuxhumaneni kwama-intermolecular phakathi kwama-molecule e-CMC, okuholela ekunciphiseni ekubonakaleni ngaphansi kwengcindezi ye-shear. Imvelo ye-pseudoplastic yezixazululo ze-CMC ibenze balungele izinhlelo ezahlukahlukene ezifana nabakhuthele, abaqinisi, kanye nama-ejenti asolisayo.

Esinye isimilo esibalulekile se-CMC yikhono layo elakha amafilimu. Izisombululo ze-CMC zingaphonswa kumafilimu anezakhiwo ezinhle kakhulu zemishini, ukucaca, kanye nokuvumelana nezimo. Lawa mafilimu angasetshenziswa njengezinkungu, ama-laminate kanye nezinto zokupakisha.

Ngaphezu kwalokho, i-CMC inezinhlobo ezinhle zezakhiwo nezibopho. Kwakha isibopho esiqinile esinezindawo ezihlukile, kufaka phakathi izinkuni, insimbi, ipulasitiki nendwangu. Le mpahla iholele ekusetshenzisweni kwe-CMC ekukhiqizweni kwezimbozo, izinamathiseli kanye nama-inks.

I-CMC Viscosity

I-viscosity yezixazululo ze-CMC incike ezicini eziningana ezifana nokuhlushwa, i-DS, MW, izinga lokushisa, kanye noP. Ngokuvamile, izixazululo ze-CMC zibonisa ama-viscosities aphezulu ezindaweni eziphakeme, i-DS, kanye neMW. I-Viscosity ibuye ikhuphuke ngokuncipha kokushisa kanye ph.

I-viscosity yezixazululo ze-CMC ilawulwa ukuxhumana phakathi kwamaketanga we-polymer nama-solecule e-solvent kwikhambi. Ama-molecule we-CMC axhumana nama-molecule wamanzi ngama-hydrogen bond, akha i-hydration shell ezungeze amaketanga we-polymer. Le Shell ye-Hydration yehlisa ukuhamba kwamaketanga e-polymer, ngaleyo ndlela kwandise ukubonwa kwesixazululo.

Ukuziphatha kwe-Rheological of CMC Solutions kubonakaliswa ngama-curve agelezayo, achaza ubudlelwano phakathi kwengcindezi ye-shear kanye ne-vear yesixazululo. Izixazululo ze-CMC zibonisa ukusebenza kwe-Non-Newntonian flow, okusho ukuthi i-viscosity yazo ishintsha ngezinga le-shear. Emazingeni aphansi we-shear, ukubonwa kwezixazululo ze-CMC kuphakeme, ngenkathi kumanani aphezulu we-shear, i-visa yehla. Lokhu kuncipha kokuncipha kungenxa yamaketanga we-polymer kufanekisa nokunwebeka ngaphansi kwengcindezi ye-shear, okuholela ekunciphiseni amabutho aphakathi phakathi kwamaketanga nokuncipha kokubonakala.

Ukusetshenziswa kwe-CMC

I-CMC isetshenziswa kabanzi emikhakheni ehlukene ngenxa yezakhiwo zayo ezihlukile nokuziphatha kwe-rheological. Embonini yokudla, i-CMC isetshenziswa njengesikhulu, i-stabilizer, emulsifier kanye nokuthungwa kwe-feat. Ingezwe ekudleni okufana no-ayisikhilimu, iziphuzo, amasoso kanye nezinto ezibhakiwe ukuthuthukisa ukuthungwa kwazo, ukungaguquguquki kanye nempilo eshalofini. I-CMC ibuye ivimbele ukwakheka kwamakristalu eqhwa ekudleni eqandisiwe, okuholela kumkhiqizo obushelelezi, onokhilimu.

Embonini yezemithi, i-CMC isetshenziswa njenge-binder, ukuqhelelana ne-ejenti yokukhishwa ne-ament elawulwayo. Thuthukisa ukucindezelwa noshukela kwe-powder futhi uqinisekise ukufana nokuqina kwamathebulethi. Ngenxa yezindawo zayo ze-mucuphesive ne-bioaphesive, i-CMC isetshenziswa futhi njenge-excipient ku-ophthalmic, amakhala, kanye nokwakheka ngomlomo.

Embonini yamaphepha, i-CMC isetshenziswa njengesengezo esimanzi esimanzi, i-coating binder kanye nokulinganisa i-ejenti yabezindaba. Kuthuthukisa ukugcinwa kwePulp kanye nokudonsa, kwandisa amandla ephepha nokuqina, futhi kunikeza indawo ebushelelezi futhi ecwebezelayo. I-CMC ibuye isebenze njengesithiyo samanzi kanye nesithiyo samafutha, ukuvimbela i-ink noma amanye ama-liquids ekungeniseni iphepha.

Embonini yezindwangu, i-CMC isetshenziswa njenge-ejenti yezandla, ukuphrinta okukhulu, nokudaya a. Kuthuthukisa ukunamathela kwefayibha, kuthuthukisa ukungena kombala nokulungiswa, futhi kunciphisa ukungezwani nemibimbi. I-CMC iphinda idlulisele ukuthamba nokuqina kwendwangu, kuya nge-DS ne-MW ye-polymer.

Embonini yezokumbiwa phansi, i-CMC isetshenziswa njenge-flocculant, inhibitor kanye ne-rheology modifier ekusebenzeni kwamaminerali. Kuthuthukisa ukuhlalisa nokuhlunga kwama-solids, kunciphise ukwahlukana kusuka ku-gaal gang, futhi kulawule ukumiswa kokumiswa nokuqina nokuqina. I-CMC ibuye inciphise umthelela wezemvelo wenqubo yezimayini ngokunciphisa ukusetshenziswa kwamakhemikhali anobuthi namanzi.

Ekuphetheni

I-CMC iyisengezo esiguquguqukayo futhi esibalulekile esibonisa izakhiwo ezihlukile nokuvunywa ngenxa yesakhiwo sayo samakhemikhali nokuxhumana namanzi. I-solubility yayo, ikhono elakhiwe ngefilimu, izakhiwo zokubopha nokunamathela zikwenza kufanelekile ukuthola izicelo ezihlukile ekudleni, emikhakheni, ephepheni, endwangu kanye nemikhakha yezimayini. I-viscosity yezixazululo ze-CMC ingalawulwa yizici eziningana, njengokuhlushwa, i-DS, MW, izinga lokushisa, kanye ne-PH, futhi lingabonakala ngokuziphatha kwalo kwe-psedoplastic kanye nokuncipha. I-CMC inomthelela omuhle kwikhwalithi, ukusebenza kahle kanye nokusimama kwemikhiqizo nezinqubo, okwenza kube yingxenye ebalulekile yemboni yanamuhla.