Nguwuphi umahluko phakathi kweMethylceluplose kunye ne-hydroxypropyl methylcelcelcelcelgulose?

I-Methylcelcellulose (MC) kunye ne-hydroxypropyl methylcelcelculose (i-HPMC) ziziphelo ezimbini eziqhelekileyo zeselselose ezinomahluko obalulekileyo kubume beekhemikhali kunye neendawo zokwenza isicelo. Nantsi kuthelekiswa neenkcukacha zawo:

1. Umahluko wamachiza eekhemikhali
Methylcellulose (MC):
I-Methylcelculose sisisu esiyi-selsulose eyenziwe ngokwazisa amaqela e-methyl (-Ce₃) kwiimolekyuli ze-selsulose yendalo. Abanye amaqela e-hydroxyl (--) kwimolekyuli eselseyuli athatyathwa ngamaqela e-methyl (-och₃) ukwenza i-methylceluplose. Ngokwesiqhelo inqanaba le-methylcell ye-methylcelcelceal imalunga ne-1.5 ukuya kwi-2,5 methyl amaqela.

Hydroxypropyl methylcelceltulose (HPMC):
I-Hydroxypropyl Methylcelcelcelose i-selsulose ye-selsulose eyongezelelweyo eyazisa amaqela e-hydropyl (-c₃h₇oh) amaqela kwisiseko se-methylceluplose. Ukuqaliswa kweqela le-hydroxypropy kwenza ukuba i-HPMC ibe nokungasebenzi kakuhle kunye nokusebenza ngokubanzi. Isakhiwo sayo sekhemikhali siqulethe izinto ezimbini, iMethyl kunye ne-hydroxyl.

2. Umahluko kwi-solity
UMethylcelculose (MC) unesifo esomeleleyo samanzi, ngakumbi kumanzi afudumeleyo, unokwenza isisombululo seColoidal. Ukwahlulahlula kwayo kuxhomekeke kumgangatho wemitha. Inqanaba eliphezulu le-methyling, engcono ukubizwa kwamanzi.

I-HydroxyPOpyl Methylcelceltulose (HPMC) inobuncinci bokuzithoba kwamanzi kune-methylceltulose. Ngenxa yokuqaliswa kwamaqela e-hydroxypropy, i-HPMC inokunyibilika kakuhle emanzini abandayo. Xa kuthelekiswa ne-methylcelculose, i-HPMC inesisu esibanzi, ngakumbi sinokunyibilika ngokukhawuleza kumaqondo obushushu asezantsi.

3. Umahluko kwiipropathi zomzimba
I-methylcelculose (MC) ihlala ingumbala ongenabala umgubo okanye iigram ze-rantule, kwaye isisombululo kukujonga i-viscous, kunye nokutsalwa okulungileyo, ukuthathwa kwempahla. Kwezinye izisombululo, uMethylceluplose unokwenza ijeli eqinileyo, kodwa "ukuqhekeka kwejeli" kwenzeka xa ushushu.

I-HydroxyPOpyl Methylcelceltulose (HPMC) inesisombululo esiphezulu sokucombulula kunye nokuzinza okungcono kwe-thermal. Izisombululo ze-HPMC zihlala zizinza ngaphezulu kwe-PH ye-PH kwaye ungaphulukani neepropathi zabo zokuqhubela xa ubushushu njengeMC, ngoko ke isetyenziswa kwiimveliso ezibuthathaka zobushushu.

4. Amasimi esetyenziswayo
Ngenxa yolawulo lwabo olukhethekileyo kunye neepropathi zomzimba, i-methylcelculose kunye ne-hydroxypropyl methylcelcelcelgalose isetyenziswe ngokubanzi kwiindawo ezahlukeneyo:

Methylcellulose (MC):
Njenge-thicker, i-eulsifier kunye nokuzinza, isetyenziswa ngokubanzi kumzi-mveliso wokutya, i-cosmetics kunye namayeza.
Kwizinto zokwakha, i-MC ihlala isetyenziswa kwisamente, i-gypsum, i-tile kunye nezinye iimveliso njengearhente yokugcina amanzi kunye ne-tickener.
Ikwasetyenziswa njengesongezelelo seengubo kunye nee-inki.

Hydroxypropyl methylcelceltulose (HPMC):
Njenge-thicker, i-eulsifier kunye ne-stiblizer, i-HPMC isetyenziswa ngokubanzi kumzi-mveliso wamayeza, ngakumbi kumalungiselelo okukhululwa ngamachiza.
Kumzi-mveliso wokwakha, i-HPMC isetyenziswa kwimveliso yodonga, udaka olwamileyo, olunamathela olomeleleyo kunye nezinye iimveliso ukuze zibonelele ngobuqu obungcono kunye nokuxhathisa kwamanzi.
Kwishishini lokutya, i-HPMC ihlala isetyenziswa njenge-thickener, i-stabilizer, i-emulsifier, njl.
Kwizithombisi, i-HPMC inokusetyenziswa njenge-himectivent, ijel yangaphambili, njl.

5. Uzinzo kunye nokuchasana nobushushu
I-methylcelculose (MC) inomdla kumaqondo obushushu aphezulu. Ngokukodwa xa ushushu, isisombululo se-MC sinokugxeka kwaye siphule, siphumela kwisisombululo esingazinzanga. Kuyanyibilika ngakumbi emanzini ashushu, kodwa inyibilikiswe kancinci emanzini abandayo.

Xa kuthelekiswa ne-MC, hydroxypropyl methylcelcelsele (i-HPMC) inobuchule obukhulu be-thermal kunye neendlela ezibanzi ze-hle, kwaye zinokuhlala zizinzile kumaqondo obushushu aphezulu, ngoko ke isetyenziswa kwiimveliso zobushushu obuphezulu.

I-6. Ixabiso kunye nentengiso
Ngenxa yenkqubo yokwenza ubunzima kunye nexabiso eliphezulu le-HPMC, ihlala ibiza kakhulu kune-methylceluplose. Kwezinye izicelo ngeemfuno ezisezantsi, i-methylcelculose inokuba lukhetho olunendleko ngakumbi, ngelixa i-HPMC ixhaphake kakhulu kwiindawo ezifuna ukusebenza okuphezulu, ezinje ngamayeza kunye nezinto zokwakha eziphezulu.

Nangona zombini i-methylcelculose (mc) kunye ne-hydroxypropyl methylcelcelcelse (i-HPMC) isuselwa kwiseli yendalo kwaye isebenzisa izinto zayo zekhemikhali, izenzi, iipropathi zekhemikhali kunye nemimandla yezicelo zahlukile. I-HPMC isetyenziswa ngokubanzi kwiindawo ezininzi (ezinje ngamayeza, ukwakhiwa kwamayeza) ngenxa yomhlaba ongcono kunye nozinzo lwe-cosmmetics kunye nozinzo lwe-thermal, ngelixa i-MC isetyenziswa ngakumbi kwezinye izicelo ezinzulu.