Yintoni umahluko phakathi kwe-carboxymethylcellulose kunye ne-methylcellulose

I-Carboxymethylcellulose (CMC) kunye ne-methylcellulose (MC) zombini ziphuma kwi-cellulose, i-polymer yendalo efumaneka kwiindonga zeeseli zezityalo. Ezi ziphuma zifumana ukusetyenziswa kakhulu kumashishini ahlukeneyo ngenxa yeempawu zabo ezizodwa. Ngaphandle kokwabelana ngokufana, i-CMC kunye ne-MC inomahluko owahlukileyo kulwakhiwo lweekhemikhali, iipropathi, usetyenziso, kunye nokusetyenziswa kwemizi-mveliso.

1.Ulwakhiwo lweChemical:

I-Carboxymethylcellulose (CMC):
I-CMC yenziwe nge-etherification ye-cellulose nge-chloroacetic acid, ekhokelela ekufakweni kwamaqela e-hydroxyl (-OH) kwi-cellulose backbone kunye namaqela e-carboxymethyl (-CH2COOH).
Iqondo lokuthatha indawo (DS) kwi-CMC libhekisa kwi-avareji yenani lamaqela e-carboxymethyl ngeyunithi yeglucose kwikhonkco leselulosi. Le parameter imisela iipropati CMC, kuquka ukunyibilika, viscosity, kunye nokuziphatha rheological.

I-Methylcellulose (MC):
I-MC iveliswa ngokutshintshwa kwamaqela e-hydroxyl kwi-cellulose kunye namaqela e-methyl (-CH3) ngokusebenzisa i-etherification.
Ngokufana ne-CMC, iipropati ze-MC ziphenjelelwa yinqanaba lokutshintshwa, elimisela ubungakanani be-methylation ecaleni kwekhonkco le-cellulose.

2.Ukunyibilika:

I-Carboxymethylcellulose (CMC):
I-CMC iyanyibilika emanzini kwaye yenza izisombululo ezicacileyo, ezibonakala.
Ukunyibilika kwayo kuxhomekeke kwi-pH, kunye ne-solubility ephezulu kwiimeko ze-alkaline.

I-Methylcellulose (MC):
I-MC nayo iyanyibilika emanzini, kodwa ukunyibilika kwayo kuxhomekeke kubushushu.
Xa inyibilika emanzini abandayo, i-MC yenza ijeli, echithwa ngokuphindaphindiweyo xa kushushu. Le propati yenza ukuba ilungele izicelo ezifuna i-gelation elawulwayo.

3.I-Viscosity:

CMC:
Ibonisa i-viscosity ephezulu kwizisombululo ezinamanzi, igalelo kwiipropati zayo eziqina.
I-viscosity yayo inokuguqulwa ngokulungelelanisa izinto ezifana nokugxininiswa, i-degree of substitution, kunye ne-pH.

MC:
Ibonisa ukuziphatha kwe-viscosity efana ne-CMC kodwa ngokubanzi i-viscous encinci.
I-viscosity yezisombululo ze-MC nazo zingalawulwa ngokuguqula iiparamitha ezifana nobushushu kunye noxinzelelo.

4.Ukwenziwa kweFilimu:

CMC:
Yenza iifilimu ezicacileyo, eziguquguqukayo xa zifakwe kwizisombululo zayo ezinamanzi.
Ezi filimu zifumana izicelo kumashishini afana nokupakishwa kokutya kunye namayeza.

MC:
Ikwakwazi ukwenza iifilimu kodwa ithande ukuba brittle ngakumbi xa ithelekiswa neefilim zeCMC.

5.Ishishini lokuTya:

CMC:
Isetyenziswa kakhulu njenge-stabilizer, i-thickener, kunye ne-emulsifier kwiimveliso zokutya ezifana ne-ayisikrimu, iisosi, kunye nokunxiba.
Ukukwazi kwayo ukuguqula ukuthungwa kunye nomlomo wezinto zokutya kwenza ukuba kuxabiseke ekuqulunqweni kokutya.

MC:
Isetyenziselwa iinjongo ezifanayo njenge-CMC kwiimveliso zokutya, ngakumbi kwizicelo ezifuna ukwenziwa kwejeli kunye nokuzinziswa.

6.Amayeza:

CMC:
Isetyenziswe kwimixube yamayeza njengesibophelelo, i-disintegrant, kunye ne-viscosity modifier kwimveliso yethebhulethi.
Kwakhona kuqeshwe kwi-topical formulations njengeekhrimu kunye neegels ngenxa yeempawu zayo ze-rheological.

MC:
Ngokuqhelekileyo isetyenziswa njenge-thickener kunye ne-gelling agent kwi-pharmaceuticals, ngakumbi kumayeza olwelo lomlomo kunye nezisombululo ze-ophthalmic.

7.Iimveliso zoKhathalelo loBuqu:

CMC:
Ifunyenwe kwizinto ezahlukeneyo zokhathalelo lomntu ezifana nentlama yamazinyo, ishampoo, kunye nezinto zokuthambisa njengesizinzisi kunye nearhente yokutyebisa.

MC:
Isetyenziswe kwizicelo ezifanayo njenge-CMC, igalelo kwi-texture kunye nokuzinza kweendlela zokunyamekela komntu.

8.Izicelo zoShishino:

CMC:
Iqeshwe kumashishini afana nelaphu, iphepha, kunye neeseramikhi ngenxa yokukwazi ukusebenza njenge-binder, i-rheology modifier, kunye ne-arhente yokugcina amanzi.

MC:
Ifumana ukusetyenziswa kwizinto zokwakha, iipeyinti, kunye nokuncamathelisa ngenxa yokuqina kwayo kunye neempawu zokubopha.

ngelixa i-carboxymethylcellulose (CMC) kunye ne-methylcellulose (MC) zombini i-cellulose derivatives kunye nezicelo ezahlukeneyo zoshishino, zibonisa ukungafani kwizakhiwo zabo zeekhemikhali, ukuziphatha kwe-solubility, iiprofayili ze-viscosity, kunye nokusetyenziswa. Ukuqonda le yantlukwano kubalulekile ekukhetheni i-derivative efanelekileyo yokusetyenziswa okuthe ngqo kumashishini ahlukeneyo, ukusuka kukutya kunye namayeza ukuya kukhathalelo lomntu kunye nokusetyenziswa kwemizi-mveliso. Nokuba sisidingo se-pH-esingqingqwa esityebileyo esifana ne-CMC kwiimveliso zokutya okanye i-arhente ephendula ubushushu efana ne-MC kwimixube yoxubo lwamayeza, i-derivative nganye ibonelela ngeenzuzo ezizodwa ezilungiselelwe iimfuno ezithile kumacandelo ahlukeneyo.