Uyini umehluko phakathi kwe-carboxymethylcellulose ne-methylcellulose?

I-Carboxymethylcellulose (CMC) kanye ne-methylcellulose (MC) zombili ziphuma ku-cellulose, i-polymer yemvelo etholakala ezindongeni zamaseli ezitshalo. Lezi ziphuma zisetshenziswa kakhulu ezimbonini ezahlukahlukene ngenxa yezakhiwo zazo ezihlukile. Ngaphandle kokwabelana ngokufana, i-CMC ne-MC inomehluko ohlukile ekwakhekeni kwamakhemikhali, izakhiwo, izinhlelo zokusebenza, kanye nokusetshenziswa kwezimboni.

1.Isakhiwo Sekhemikhali:

I-Carboxymethylcellulose (CMC):
I-CMC ihlanganiswa yi-etherification ye-cellulose nge-chloroacetic acid, okuholela ekufakweni kwamaqembu e-hydroxyl (-OH) kumgogodla we-cellulose ngamaqembu e-carboxymethyl (-CH2COOH).
I-degree of substitution (DS) ku-CMC ibhekisela enanini eliyisilinganiso lamaqembu e-carboxymethyl ngeyunithi ngayinye ye-glucose ochungechungeni lwe-cellulose. Le parameter inquma izakhiwo ze-CMC, okuhlanganisa ukuncibilika, i-viscosity, nokuziphatha kwe-rheological.

I-Methylcellulose (MC):
I-MC ikhiqizwa ngokushintshwa kwamaqembu e-hydroxyl ku-cellulose namaqembu e-methyl (-CH3) ngokusebenzisa i-etherification.
Ngokufanayo ne-CMC, izakhiwo ze-MC zithonywa izinga lokushintsha, elinquma izinga le-methylation eduze kweketango le-cellulose.

2.Ukunyibilika:

I-Carboxymethylcellulose (CMC):
I-CMC iyancibilika emanzini futhi yakha izisombululo ezibonisa ngale, ne-viscous.
Ukunyibilika kwayo kuncike ku-pH, nokuncibilika okuphezulu ezimeni ze-alkaline.

I-Methylcellulose (MC):
I-MC nayo iyancibilika emanzini, kodwa ukunyibilika kwayo kuncike kumazinga okushisa.
Uma incibilika emanzini abandayo, i-MC yenza ijeli, encibilika ngokubuyisela emuva lapho kushiswa. Lesi sakhiwo siyenza ifanelekele izinhlelo zokusebenza ezidinga i-gelation elawulwayo.

3.I-Viscosity:

I-CMC:
Ibonisa i-viscosity ephezulu ezixazululweni ezinamanzi, okunomthelela ekwakhekeni kwayo okuqinile.
I-viscosity yayo ingashintshwa ngokulungisa izici ezifana nokugxilisa ingqondo, izinga lokushintshwa, ne-pH.

MC:
Ibonisa ukuziphatha kwe-viscosity efana ne-CMC kodwa ngokuvamile ayibonakali kangako.
I-viscosity yezixazululo ze-MC nayo ingalawulwa ngokushintsha amapharamitha afana nezinga lokushisa nokugxilisa ingqondo.

4.Ukwakhiwa Kwefilimu:

I-CMC:
Yakha amafilimu acacile, aguquguqukayo lapho esakazwa ezixazululweni zawo ezinamanzi.
Lawa mafilimu athola ukusetshenziswa ezimbonini ezifana nokupakishwa kokudla kanye nemithi.

MC:
Futhi ekwazi ukwenza amafilimu kodwa ijwayele ukuba brittle uma iqhathaniswa namafilimu e-CMC.

5.Imboni Yokudla:

I-CMC:
Isetshenziswa kakhulu njenge-stabilizer, thickener, kanye ne-emulsifier emikhiqizweni yokudla efana no-ayisikhilimu, amasoso, nama-dressings.
Ikhono layo lokuguqula ukuthungwa nokuzwakala komlomo kwezinto zokudla likwenza kube wusizo ekwakhiweni kokudla.

MC:
Isetshenziselwa izinjongo ezifanayo njenge-CMC emikhiqizweni yokudla, ikakhulukazi ezinhlelweni ezidinga ukwakheka kwejeli nokuqiniswa.

6.Imithi:

I-CMC:
Isetshenziswa ekwenziweni kwemithi njengesihlanganisi, i-disintegrant, ne-viscosity modifier ekukhiqizeni ithebhulethi.
Iphinde isetshenziswe ekwakhiweni kwe-topical njengama-creams nama-gel ngenxa yezakhiwo zayo ze-rheological.

MC:
Okuvame ukusetshenziswa njenge-thickener kanye ne-ejenti ye-gelling emithini yemithi, ikakhulukazi emithini yoketshezi yomlomo kanye nezixazululo ze-ophthalmic.

7.Imikhiqizo Yokunakekela Umuntu:

I-CMC:
Itholakala ezintweni ezihlukene zokunakekelwa komuntu siqu ezifana nomuthi wokuxubha amazinyo, ishampoo, nezinto zokugcoba njengesiqiniseko kanye ne-ejenti yokuqina.

MC:
Isetshenziswa ezinhlelweni ezifanayo njenge-CMC, inikela ekuthunjweni nasekuzinzeni kokwakheka kokunakekelwa komuntu siqu.

8.Izicelo Zezimboni:

I-CMC:
Iqashwe ezimbonini ezifana nezindwangu, iphepha, nezitsha zobumba ngenxa yekhono layo lokusebenza njenge-binder, i-rheology modifier, ne-ejenti yokugcinwa kwamanzi.

MC:
Ithola ukusetshenziswa ezintweni zokwakha, amapende, nezinamatheliso ngenxa yokujiya kwayo nokubopha.

kuyilapho i-carboxymethylcellulose (CMC) ne-methylcellulose (MC) kokubili kuyizinto eziphuma ku-cellulose ezinezinhlelo zokusebenza ezihlukene zezimboni, zibonisa umehluko ekwakhekeni kwamakhemikhali, ukuziphatha kokuncibilika, amaphrofayili e-viscosity, kanye nezinhlelo zokusebenza. Ukuqonda lokhu kwehluka kubalulekile ekukhetheni okuphuma kokunye okufanelekile ukuze kusetshenziswe okuthile ezimbonini ezihlukahlukene, kusukela kwezokudla nemithi kuya ekunakekelweni komuntu siqu nasezisetshenziswa zezimboni. Kungakhathaliseki ukuthi isidingo sokujiya esizwela i-pH njenge-CMC emikhiqizweni yokudla noma i-ejenti ephendula izinga lokushisa efana ne-MC ekwenziweni kwemithi, okuphuma kokunye kunikeza izinzuzo ezihlukile eziklanyelwe izidingo ezithile emikhakheni eyahlukene.