Yintoni umahluko phakathi kwe-carboxymethylcellulose kunye ne-methylcellulose

I-Carboxymethylcellulose (CMC) kunye ne-methylcellulose (MC) zombini zizinto ezivela kwi-cellulose, i-polymer yendalo efumaneka eludongeni lweeseli zezityalo. Ezi zinto zivela kwi-derivatives zisetyenziswa kakhulu kumashishini ahlukeneyo ngenxa yeempawu zazo ezizodwa. Nangona zifana ngokufanayo, i-CMC kunye ne-MC zinomahluko owahlukileyo kwizakhiwo zazo zeekhemikhali, iimpawu, usetyenziso, kunye nokusetyenziswa kwemizi-mveliso.

1. Ulwakhiwo lweKhemikhali:

I-Carboxymethylcellulose (CMC):
I-CMC yenziwa ngokufaka i-cellulose etherification nge-chloroacetic acid, nto leyo ebangela ukuba amaqela e-hydroxyl (-OH) atshintshwe kumqolo we-cellulose ngamaqela e-carboxymethyl (-CH2COOH).
Iqondo lokutshintshwa (DS) kwi-CMC libhekisa kwinani eliqhelekileyo lamaqela e-carboxymethyl ngeyunithi yeglucose kwikhonkco le-cellulose. Le parameter imisela iipropati ze-CMC, kubandakanya ukunyibilika, i-viscosity, kunye nokuziphatha kwe-rheological.

I-Methylcellulose (MC):
I-MC iveliswa ngokutshintshwa kwamaqela e-hydroxyl kwi-cellulose ngamaqela e-methyl (-CH3) ngokusebenzisa i-etherification.
Ngokufanayo ne-CMC, iipropati ze-MC zichatshazelwa liqondo lokutshintshwa, elimisela ubungakanani be-methylation ecaleni kwe-cellulose chain.

2. Ukunyibilika:

I-Carboxymethylcellulose (CMC):
I-CMC iyanyibilika emanzini kwaye yenza izisombululo ezicacileyo neziqinileyo.
Ukunyibilika kwayo kuxhomekeke kwi-pH, kwaye ukunyibilika kwayo kuphezulu kwiimeko ze-alkaline.

I-Methylcellulose (MC):
I-MC ikwanyibilika emanzini, kodwa ukunyibilika kwayo kuxhomekeke kubushushu.
Xa inyibilikiswa emanzini abandayo, i-MC yenza ijeli, ethi inyibilike ngokuphindaphindiweyo xa ifudunyezwa. Le mpawu iyenza ifaneleke ukusetyenziswa okufuna i-gelation elawulwayo.

3. Ukuqina:

I-CMC:
Ibonisa i-viscosity ephezulu kwizisombululo zamanzi, nto leyo enegalelo kwizakhiwo zayo zokutyeba.
Ukuqina kwayo kunokutshintshwa ngokulungelelanisa izinto ezifana noxinzelelo, ubungakanani bokutshintshwa, kunye ne-pH.

MC:
Ibonisa ukuziphatha kwe-viscosity efana ne-CMC kodwa ngokubanzi ayixinene kakhulu.
Ubuninzi be-viscosity yezisombululo ze-MC bunokulawulwa ngokutshintsha iiparameter ezifana nobushushu kunye noxinzelelo.

4. Ukwenziwa kweefilimu:

I-CMC:
Yenza iifilimu ezicacileyo neziguquguqukayo xa zenziwe ngezisombululo zayo zamanzi.
Ezi filimu zifumana usetyenziso kumashishini afana nokupakisha ukutya kunye namayeza.

MC:
Ikwakwazi nokwenza iifilimu kodwa idla ngokuba buthathaka ngakumbi xa ithelekiswa neefilimu zeCMC.

5. Ishishini lokutya:

I-CMC:
Isetyenziswa kakhulu njengesiqinisi, isithambisi, kunye nesinyibilikisi kwiimveliso zokutya ezifana ne-ayisikhrim, iisosi, kunye needressing.
Ubuchule bayo bokutshintsha indlela evakala ngayo ukutya kunye nendlela evakala ngayo emlonyeni kuyenza ibe luncedo kwiifomyula zokutya.

MC:
Isetyenziswa ngeenjongo ezifanayo neCMC kwiimveliso zokutya, ingakumbi xa kufuneka kwenziwe ijeli kwaye ihlale izinzile.

6. Amayeza:

I-CMC:
Isetyenziswa kwiifomyula zamayeza njengesihlanganisi, isinyibilikisi, kunye nesiguquli se-viscosity ekwenzeni iipilisi.
Ikwasetyenziswa kwiifomyula ezinje ngeekhrimu kunye neejeli ngenxa yeempawu zayo ze-rheological.

MC:
Isetyenziswa kakhulu njengesithambisi kunye ne-arhente ye-gelling kwimithi, ngakumbi kwimithi yolwelo ethethwayo kunye nezisombululo zamehlo.

7. Iimveliso zoKhathalelo loMntu:

I-CMC:
Ifumaneka kwizinto ezahlukeneyo zokunyamekela umntu ezifana ne-toothpaste, i-shampoo, kunye ne-lotions njenge-stabilizer kunye ne-ejenti yokuqinisa.

MC:
Isetyenziswa kwizicelo ezifanayo ne-CMC, inegalelo ekubunjweni nasekuzinzeni kweendlela zokunyamekela umntu.

8. Izicelo zeMveliso:

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

MC:
Ifumana ukusetyenziswa kwizixhobo zokwakha, iipeyinti, kunye nezincamathelisi ngenxa yeempawu zayo zokuqina kunye nokubopha.

ngelixa i-carboxymethylcellulose (CMC) kunye ne-methylcellulose (MC) zombini ziyi-cellulose derivatives ezinezicelo ezahlukeneyo zoshishino, zibonisa umahluko kwizakhiwo zazo zeekhemikhali, iindlela zokunyibilika, iiprofayili ze-viscosity, kunye nokusetyenziswa. Ukuqonda olu mahluko kubalulekile ekukhetheni i-derivative efanelekileyo yokusetyenziswa okuthile kumashishini ahlukeneyo, ukusuka ekutyeni nakwimithi ukuya kukhathalelo lomntu kunye nokusetyenziswa kwemizi-mveliso. Nokuba yimfuneko ye-pH-sensitive thickener efana ne-CMC kwiimveliso zokutya okanye i-gelling agent ephendula ubushushu efana ne-MC kwiifomyula zamayeza, i-derivative nganye inikezela ngeenzuzo ezikhethekileyo ezenzelwe iimfuno ezithile kumacandelo ahlukeneyo.