Iyiphi engcono, i-CMC noma i-HPMC?

I-CMC (i-sodium carboxymethyl cellulose) ne-HPMC (i-hydroxypropyl methyl cellulose) yizinto ezimbili ezivame ukusetshenziswa eziphuma ku-cellulose, ezisetshenziswa kakhulu ezimbonini ezahlukahlukene. Ngokuqondene nokuthi iyiphi engcono, kuncike esimweni esithile sohlelo lokusebenza kanye nezidingo.

1. Izakhiwo zamakhemikhali
I-CMC iyinhlanganisela ye-polymer encibilika emanzini anionic etholwe ngokwelapha i-cellulose yemvelo nge-sodium chloroacetate ngaphansi kwezimo ze-alkali. Amaqembu e-carboxymethyl angeniswa ochungechungeni lwawo lwamangqamuzana, okwenza kube nokuncibilika okuhle kwamanzi kanye nezakhiwo ezijiya.

I-HPMC i-non-ionic cellulose ether etholwe ngokuphendula i-cellulose nge-methyl chloride ne-propylene oxide. Amaqembu e-methoxy ne-hydroxypropoxy esakhiweni samangqamuzana e-HPMC akunikeza ukujiya okuhle, ukuzinza nokugcinwa kwamanzi, kanye nezakhiwo ezinhle zejeli ezishisayo.

2. Izinkambu zokufaka isicelo
Imboni yokudla: I-CMC ivame ukusetshenziswa ekudleni njenge-thickener, stabilizer, suspending agent kanye ne-emulsifier, njll., futhi ivame ukutholakala ku-yogurt, u-ayisikhilimu, ujeli, iziphuzo kanye nemikhiqizo ebhakiwe. Ingathuthukisa ukuthungwa kokudla futhi yandise impilo yeshalofu. Nakuba i-HPMC iphinde isetshenziswe embonini yokudla, isetshenziswa kakhulu njengesengezo ku-fiber yokudla, ikakhulukazi kweminye imikhiqizo engenayo i-gluten.

Imboni Yemithi: I-HPMC isetshenziswa kakhulu embonini yezemithi, ikakhulukazi embotsheni yethebhulethi, izidakamizwa ezikhishwa okulawulwayo kanye nokukhiqizwa kwama-capsule. Izakhiwo zayo ezingezona i-ionic kanye nokuvumelana okuhle kwe-biocompatibility kuyinikeza izinzuzo eziyingqayizivele ezinhlelweni zokulethwa kwezidakamizwa. I-CMC iphinde isetshenziswe embonini yezemithi, kodwa kakhulu njenge-thickener ne-adhesive yezidakamizwa.

Imboni yokwakha neyokumboza: I-HPMC isetshenziswa kabanzi ezintweni zokwakha, ikakhulukazi odakeni olomile, i-gypsum, ne-putty powder, ngenxa yokugcinwa kwamanzi okuhle kakhulu, ukuqina kanye nezindawo zokulwa nokushelela. I-CMC futhi inezinye izinhlelo zokusebenza embonini yokumboza, kodwa isetshenziswa kakhulu njenge-thiener yezingubo ezisekelwe emanzini.

Izimonyo nokunakekelwa komuntu siqu: I-HPMC ivame ukusetshenziswa ezimonyoni, ikakhulukazi kumafutha okugcoba, okhilimu, ama-shampoos kanye nezixubho zokuxubha, njenge-thickener, i-emulsion stabilizer kanye ne-moisturizer. I-CMC iphinde isetshenziswe ezinhlelweni ezifanayo, kodwa umphumela wayo wokuswakama awumuhle njenge-HPMC.

3. Izici zokusebenza
Ukunyibilika kwamanzi: I-CMC ingancibilika kahle emanzini abandayo nashisayo, kuyilapho i-HPMC incibilika kalula emanzini abandayo, kodwa ayincibiliki emanzini ashisayo futhi ine-gelation eshisayo. Ngakho-ke, i-HPMC ifaneleka kakhulu emikhiqizweni edinga izakhiwo ze-gelation ezishisayo kwezinye izinhlelo zokusebenza, njengamaphilisi akhishwa okulawulwayo kwezokwelapha.

Ukulawulwa kwe-viscosity: I-CMC ine-viscosity ephansi futhi kulula ukuyilawula, kuyilapho i-HPMC inobubanzi be-viscosity ebanzi futhi ivumelana nezimo. I-HPMC inganikeza i-viscosity ephakeme futhi ihlale izinzile emazingeni okushisa ahlukene, okuyenza ibe nenzuzo enkulu ezinhlelweni ezidinga ukulawulwa kwe-viscosity okunembile.

Ukuzinza: I-HPMC inokusimama okungcono kwamakhemikhali kune-CMC. Ibonisa ukuzinza okuhle ezindaweni ezine-acidic noma ezine-alkaline, kuyilapho i-CMC ingase yonakalise kuma-asidi aqinile noma izisekelo eziqinile.

4. Intengo nezindleko
Ngokuvamile, i-CMC ishibhile futhi ifanele izicelo zezimboni ezinkulu, kuyilapho i-HPMC ibiza kakhulu ngenxa yenqubo yayo yokukhiqiza eyinkimbinkimbi kanye nezindleko eziphezulu. I-CMC ingase ithandeke kakhulu ezimeni lapho kudingeka khona amanani amakhulu futhi izindleko zibucayi. Nokho, kweminye imikhakha enezidingo zokusebenza eziphezulu, njengemithi nezimonyo ezisezingeni eliphezulu, i-HPMC isasetshenziswa kabanzi ngenxa yezinzuzo zayo zokusebenza eziyingqayizivele naphezu kwenani layo eliphezulu.

5. Ukuvikelwa kwemvelo nokuphepha
Kokubili i-CMC ne-HPMC zinokubola okuhle kwe-biodegradability nokuvikelwa kwemvelo, futhi zinomthelela omncane endaweni ezungezile ngesikhathi sokusetshenziswa. Zombili zibhekwa njengezithasiselo zokudla okuphephile nezidakamizwa, futhi zingasetshenziswa ngokuphepha emikhiqizweni ehlukahlukene ngemva kokugadwa okuqinile kanye nesitifiketi.

I-CMC ne-HPMC zinezinzuzo zazo kanye nokubi, futhi akunakwenzeka ukumane usho ukuthi iyiphi engcono. Kuzinhlelo zokusebenza ezidinga ukukhiqizwa okungabizi kakhulu, okukhulu, okufana nemboni yokudla ejwayelekile kanye nezidingo ezilula zokujiya, i-CMC iyinketho eyongayo. Emasimini anezidingo eziphezulu zokusebenza, njengezinhlelo zokukhululwa ezilawulwa yimithi, izinto zokwakha ezisezingeni eliphezulu nezimonyo ezithuthukisiwe, i-HPMC ingase ifaneleke kakhulu ngenxa yokusebenza kwayo okuhle kakhulu. Ngakho-ke, ukukhetha ukuthi iyiphi i-cellulose derivative incike ezidingweni ezithile zohlelo lokusebenza, izidingo zokusebenza nokucatshangelwa kwezindleko.